Claims for Patent: 5,541,206

Summary for Patent: 5,541,206

Title:	Retroviral protease inhibiting compounds
Abstract:	A retroviral protease inhibiting compound of the formula: ##STR1## is disclosed.
Inventor(s):	Kempf; Dale J. (Libertyville, IL), Norbeck; Daniel W. (Crystal Lake, IL), Sham; Hing Leung (Gurnee, IL), Zhao; Chen (Gurnee, IL)
Assignee:	Abbott Laboratories (Abbott Park, IL)
Application Number:	08/423,387
Patent Claims:	1. A compound of the formula: ##STR18## wherein R.sub.1 is monosubstituted thiazolyl or monosubstituted oxazolyl wherein the substituent is selected from (i) C.sub.1 -C.sub.6 -loweralkyl, (ii) C.sub.2 -C.sub.6 -loweralkenyl, (iii) C.sub.3 -C.sub.7 -cycloalkyl, (iv) C.sub.3 -C.sub.7 -cycloalkyl-C.sub.1 -C.sub.6 -alkyl, (v) C.sub.5 -C.sub.7 -cycloalkenyl, (vi) C.sub.5 -C.sub.7 -cycloalkyl-C.sub.1 -C.sub.6 -alkyl, (vii) C.sub.1 -C.sub.6 -alkoxy-C.sub.1 -C.sub.6 -alkyl or benzyloxy-C.sub.1 -C.sub.6 -alkyl, (viii) C.sub.1 -C.sub.6 -thioalkoxy-C.sub.1 -C.sub.6 -alkyl or benzyl- S--C.sub.1 -C.sub.6 -alkyl, (ix) C.sub.1 -C.sub.6 -alkylamino, (x) di-C.sub.1 -C.sub.6 -alkylamino, (xi) phenyl wherein the phenyl ring is unsubstituted or substituted with a substituent selected from halo, C.sub.1 -C.sub.6 -loweralkyl, hydroxy, C.sub.1 -C.sub.6 -alkoxy, benzyloxy, C.sub.1 -C.sub.6 -thioalkoxy and benzyl-S--, (xii) phenyl-C.sub.1 -C.sub.6 -alkyl wherein the phenyl ring is unsubstituted or substituted as defined above, (xiii) di-C.sub.1 -C.sub.6 -alkylamino-C.sub.1 -C.sub.6 -alkyl, (xiv) C.sub.1 -C.sub.6 -alkoxy or benzyloxy and (xv) C.sub.1 -C.sub.6 -thioalkoxy or benzyl-S--; n is 1,2or 3; R.sub.2 is hydrogen or C.sub.1 -C.sub.6 -loweralkyl; R.sub.3 is C.sub.1 -C.sub.6 -loweralkyl; R.sub.4 and R.sub.4a are independently selected from phenyl and substituted phenyl wherein the phenyl ring is substituted with a substituent selected from (i) halo, (ii) C.sub.1 -C.sub.6 -loweralkyl, (iii) hydroxy, (iv) C.sub.1 -C.sub.6 -alkoxy or benzyloxy and (v) C.sub.1 -C.sub.6 -thioalkoxy or benzyl-S--; R.sub.6 is hydrogen or C.sub.1 -C.sub.6 -loweralkyl; R.sub.7 is thiazolyl or oxazolyl wherein the thiazolyl or oxazolyl ring is unsubstituted or substituted with C.sub.1 -C.sub.6 -loweralkyl; X is hydrogen and Y is --OH ; and Z is absent, --O--, --S--, --CH.sub.2 -- or --N(R.sub.8)-- wherein R.sub.8 is C.sub.1 -C.sub.6 -loweralkyl, C.sub.3 -C.sub.7 -cycloalkyl, --OH or --NHR.sub.8a wherein R.sub.8a is hydrogen, C.sub.1 -C.sub.6 -loweralkyl or an N-protecting group selected from the group consisting of formyl, acetyl, propionyl, pivaloyl, t-butylacetyl, 2-chloroacetyl, 2-bromoacetyl, trifluoroacetyl, trichloroacetyl, phthalyl, o-nitrophenoxyacetyl, .alpha.-chlorobutyryl, benzoyl, 4-chlorobenzoyl, 4-bromobenzoyl, 4-nitrobenzoyl, benzenesulfonyl, p-toluenesulfonyl, benzyloxycarbonyl, p-chlorobenzyloxycarbonyl, p-methoxybenzyloxycarbonyl, p-nitrobenzyloxycarbonyl, 2-nitrobenzyloxycarbonyl, p-bromobenzyloxycarbonyl, 3,4-dimethoxybenzyloxycarbonyl, 3,5-dimethoxybenzyloxycarbonyl, 2,4-dimethoxybenzyloxycarbonyl, 4-methoxybenzyloxycarbonyl, 2-nitro-4,5-dimethoxybenzyloxycarbonyl, 3,4,5-trimethoxybenzyloxycarbonyl, 1-(p-biphenylyl)-1-methylethoxycarbonyl, .alpha..alpha.-dimethyl-3,5-dimet hoxybenzyloxycarbonyl, benzhydryloxycarbonyl, t-butyloxycarbonyl, diisopropylmethoxycarbonyl, isopropyloxycarbonyl, ethoxycarbonyl, methoxycarbonyl, allyloxycarbonyl, 2,2,2,-trichloroethoxycarbonyl, phenoxycarbonyl, 4-nitrophenoxycarbonyl, fluorenyl-9-methoxycarbonyl, cyclopentyloxycarbonyl, adamantyloxycarbonyl, cyclohexyloxycarbonyl, phenylthiocarbonyl, benzyl, triphenylmethyl, benzyloxymethyl and trimethylsilyl; or a pharmaceutically acceptable salt thereof. 2. A compound of the formula: ##STR19## wherein R.sub.1 is monosubstituted thiazolyl or monosubstituted oxazolyl wherein the substituent is selected from (i) C.sub.1 -C.sub.6 -loweralkyl, (ii) C.sub.2 -C.sub.6 -loweralkenyl, (iii) C.sub.3 -C.sub.7 -cycloalkyl, (iv) C.sub.3 -C.sub.7 -cycloalkyl-C.sub.1 -C.sub.6 -alkyl, (v) C.sub.5 -C.sub.7 -cycloalkenyl, (vi) C.sub.5 -C.sub.7 -cycloalkenyl-C.sub.1 -C.sub.6 -alkyl, (vii) C.sub.1 -C.sub.6 -alkoxy -C.sub.1 -C.sub.6 -alkyl or benzyloxy-C.sub.1 -C.sub.6 -alkyl, (viii) C.sub.1 -C.sub.6 -thioalkoxy-C.sub.1 -C.sub.6 -alkyl or benzyl-S--C.sub.1 -C.sub.6 -alkyl, (ix) C.sub.1 -C.sub.6 -alkylamino, (x) di-C.sub.1 -C.sub.6 -alkylamino, (xi) phenyl wherein the phenyl ring is unsubstituted or substituted with a substituent selected from halo, C.sub.1 -C.sub.6 -loweralkyl, hydroxy, C.sub.1 -C.sub.6 -alkoxy, benzyloxy, C.sub.1 -C.sub.6 -thioalkoxy and benzyl-S--, (xii) phenyl -C.sub.1 -C.sub.6 -alkyl wherein the phenyl ring is unsubstituted or substituted as defined above, (xiii) di-C.sub.1 -C.sub.6 -alkylamino -C.sub.1 -C.sub.6 -alkyl, (xiv) C.sub.1 -C.sub.6 -alkoxy or benzyloxy and (xv) C.sub.1 -C.sub.6 -thioalkoxy or benzyl-S--; n is 1; R.sub.2 is hydrogen or C.sub.1 -C.sub.6 -loweralkyl; R.sub.3 is C.sub.1 -C.sub.6 -loweralkyl; R.sub.4 is phenyl wherein the phenyl ring is unsubstituted or substituted with a substituent selected from (i) halo, (ii) C.sub.1 -C.sub.6 -loweralkyl, (iii) hydroxy, (iv) C.sub.1 -C.sub.6 -alkoxy or benzyloxy and (v) C.sub.1 -C.sub.6 -thioalkoxy or benzyl-S--: R.sub.5 is hydrogen, halo, C.sub.1 -C.sub.6 -loweralkyl, hydroxy, C.sub.1 -C.sub.6 -alkoxy, benzyloxy, C.sub.1 -C.sub.6 -thioalkoxy or benzyl-S--; R.sub.6 is hydrogen or C.sub.1 -C.sub.6 -loweralkyl; R.sub.7 is thiazolyl or oxazolyl wherein the thiazolyl or oxazolyl ring is unsubstituted or substituted with C.sub.1 -C.sub.6 -loweralkyl; X is hydrogen and Y is --OH; Z is absent, --O--, --S--, --CH.sub.2 -- or --N(R.sub.8)-wherein R.sub.8 is C.sub.1 -C.sub.6 -loweralkyl, C.sub.3 -C.sub.7 -cycloalkyl, --OH or --NHR.sub.8a wherein R.sub.8a is hydrogen or C.sub.1 -C.sub.6 -loweralkyl; or a pharmaceutically acceptable salt thereof. 3. The compound of claim 2 wherein R.sub.2 is hydrogen; R.sub.4 is phenyl; R.sub.5 is hydrogen; R.sub.6 is hydrogen and R.sub.7 is thiazolyl or oxazolyl. 4. The compound of claim 3 wherein R.sub.7 is 5-thiazolyl or 5-oxazolyl. 5. The compound of claim 2 wherein R.sub.1 is 2-monosubstituted-4-thiazolyl or 2-monosubstituted-4-oxazolyl wherein the substituent is C.sub.1 -C.sub.6 -loweralkyl; ; R.sub.2 is hydrogen; R.sub.4 is phenyl; R.sub.5 is hydrogen; R.sub.6 is hydrogen; R.sub.7 is 5-thiazolyl or 5-oxazolyl; and Z is --O-- or --N-(R.sub.8)-- wherein R.sub.8 is C.sub.1 -C.sub.6 -loweralkyl. 6. The compound of claim 2 wherein R.sub.1 is 2-monosubstituted-4-thiazolyl or 2-monosubstituted-4-oxazolyl wherein the substituent is ethyl or isopropyl; R.sub.2 is hydrogen; R.sub.3 is methyl or isopropyl; R.sub.4 is phenyl; R.sub.5 is hydrogen; R.sub.6 is hydrogen; R.sub.7 is 5-thiazolyl or 5-oxazolyl; and Z is --O--. 7. The compound of claim 2 wherein R.sub.1 is 2-monosubstituted-4-thiazolyl or 2-monosubstituted-4-oxazolyl wherein the substituent is ethyl or isopropyl; R.sub.2 is hydrogen; R.sub.3 is isopropyl; R.sub.4 is phenyl; R.sub.5 is hydrogen; R.sub.6 is hydrogen; R.sub.7 is 5-thiazolyl or 5-oxazolyl; and Z is --N-(R.sub.8)-- wherein R.sub.8 is methyl. 8. (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-isopropyl-4-oxazolyl)meth yl)-amino)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino) -1,6-diphenyl-3-hydroxyhexane; or a pharmaceutically acceptable salt thereof. 9. A compound selected from the group consisting of: (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-isopropyl-4-thiazolyl)methyl)-amino)car bonyl)alaninyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-dipheny l-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((2-Isopropyl-4-thiazolyl)methoxycarbonyl)valinyl)amino) -2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-2-(N-(N-((2-Isopropyl-4-thiazolyl)methoxycarbonyl)valinyl)amino) -5-(N-methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((2-Isopropyl)-4-thiazolyl)methoxycarbonyl)alaninyl)amin o)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((2-(N,N-Dimethylamino)-4-thiazolyl)methoxycarbonyl)-val inyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydrox yhexane; (2S,3S,5S)-2-(N-(N-((2-(N,N-Dimethylamino)-4-thiazolyl)methoxycarbonyl)-val inyl)amino)-5-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydrox yhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-isopropyl-4-oxazolyl)methyl)amino)-carb onyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3 -hydroxyhexane; and (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-isopropyl-4-thiazolyl)methyl)amino)-car bonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl- 3-hydroxyhexane; or a pharmaceutically acceptable salt thereof. 10. (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-isopro pyl-4-thiazolyl)methyl)-amino)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)me thoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; or a pharmaceutically acceptable salt thereof. 11. A compound of the formula: ##STR20## wherein R.sub.1 is monosubstituted thiazolyl or monosubstituted oxazolyl wherein the substituent is selected from (i) C.sub.1 -C.sub.6 -loweralkyl, (ii) C.sub.2 -C.sub.6 -loweralkenyl, (iii) C.sub.3 -C.sub.7 -cycloalkyl, (iv) C.sub.3 -C.sub.7 -cycloalkyl-C.sub.1 -C.sub.6 -alkyl, (v) C.sub.5 -C.sub.7 -cycloalkenyl, (vi) C.sub.5 -C.sub.7 -cycloalkenyl-C.sub.1 -C.sub.6 -alkyl, (vii) C.sub.1 -C.sub.6 -alkoxy-C.sub.1 -C.sub.6 -alkyl or benzyloxy-C.sub.1 -C.sub.6 -alkyl, (viii) C.sub.1 -C.sub.6 -thioalkoxy -C.sub.1 -C.sub.6 -alkyl or benzyl-S--C.sub.1 -C.sub.6 -alkyl, (ix) C.sub.1 -C.sub.6 -alkylamino, (x) di-C.sub.1 -C.sub.6 -alkylamino, (xi) phenyl wherein the phenyl ring is unsubstituted or substituted with a substituent selected from halo, C.sub.1 -C.sub.6 loweralkyl, hydroxy, C.sub.1 -C.sub.6 -alkoxy, benzyloxy, C.sub.1 -C.sub.6 -thioalkoxy and benzyl-S--, (xii) phenyl -C.sub.1 -C.sub.6 -alkyl wherein the phenyl ring is unsubstituted or substituted as defined above, (xiii) di-C.sub.1 -C.sub.6 -alkylamino-C.sub.1 -C.sub.6 -alkyl, (xiv) C.sub.1 -C.sub.6 -alkoxy or benzyloxy and (xv) C.sub.1 -C.sub.6 -thioalkoxy or benzyl-S--; n is 1,2 or 3; R.sub.2 is hydrogen or C.sub.1 -C.sub.6 -loweralkyl; R.sub.4 and R.sub.4a are independently selected from phenyl and substituted phenyl wherein the phenyl ring is substituted with a substituent selected from (i) halo, (ii) C.sub.1 -C.sub.6 -loweralkyl, (iii) hydroxy, (iv) C.sub.1 -C.sub.6 -alkoxy or benzyloxy and (v) C.sub.1 -C.sub.6 -thioalkoxy or benzyl-S--; R.sub.6 is hydrogen or C.sub.1 -C.sub.6 -loweralkyl; R.sub.7 is thiazolyl or oxazolyl wherein the thiazolyl or oxazolyl ring is unsubstituted and R.sub.3 is C.sub.2 -C.sub.6 -loweralkyl and Z is absent, --O--, --S-- or --CH.sub.2 --; or R.sub.7 is thiazolyl or oxazolyl wherein the thiazolyl or oxazolyl ring is substituted with C.sub.1 -C.sub.6 -loweralkyl and R.sub.3 is C.sub.1 -C.sub.6 -loweralkyl and Z is absent, --O--, --S--, --CH.sub.2 --Nor --(R.sub.8)-- wherein R.sub.8 is C.sub.1 -C.sub.6 -loweralkyl, C.sub.3 -C.sub.7 -cycloalkyl, --OH or --NHR.sub.8a wherein R.sub.8a is hydrogen, C.sub.1 -C.sub.6 -loweralkyl or an N-protecting group selected from the group consisting of formyl, acetyl, propionyl, pivaloyl, t-butylacetyl, 2-chloroacetyl, 2-bromoacetyl, trifluoroacetyl, trichloroacetyl, phthalyl, o-nitrophenoxyacetyl, .alpha.-chlorobutyryl, benzoyl, 4-chlorobenzoyl, 4-bromobenzoyl, 4-nitrobenzoyl, benzenesulfonyl, p-toluenesulfonyl, benzyloxycarbonyl, p-chlorobenzyloxycarbonyl, p-methoxybenzyloxycarbonyl, p- nitrobenzyloxycarbonyl, 2- nitrobenzyloxycarbonyl, p-bromobenzyloxycarbonyl, 3,4-dimethoxybenzyloxycarbonyl, 3,5-dimethoxybenzyloxycarbonyl, 2,4-dimethoxybenzyloxycarbonyl, 4-methoxybenzyloxycarbonyl, 2-nitro-4,5-dimethoxybenzyloxycarbonyl, 3,4,5-trimethoxybenzyloxycarbonyl, 1-(p-biphenylyl)-1-methylethoxycarbonyl, .alpha.,.alpha.-dimethyl-3,5-dime thoxybenzyloxycarbonyl, benzhydryloxycarbonyl, t-butyloxycarbonyl, diisopropylmethoxycarbonyl, isopropyloxycarbonyl, ethoxycarbonyl, methoxycarbonyl, allyloxycarbonyl, 2,2,2,-trichloroethoxycarbonyl, phenoxycarbonyl, 4-nitrophenoxycarbonyl, fluorenyl-9-methoxycarbonyl, cyclopentyloxycarbonyl, adamantyloxycarbonyl, cyclohexyloxycarbonyl, phenylthiocarbonyl, benzyl, triphenylmethyl, benzyloxymethyl and trimethylsilyl; and X is --OH and Y is hydrogen; or a pharmaceutically acceptable salt thereof. 12. A compound of the formula: ##STR21## wherein R.sub.1 is monosubstituted thiazolyl or monosubstituted oxazolyl wherein the substituent is selected from (i) C.sub.1 -C.sub.6 -loweralkyl, (ii) C.sub.2 -C.sub.6 -loweralkenyl, (iii) C.sub.3 -C.sub.7 -cycloalkyl, (iv) C.sub.3 -C.sub.7 -cycloalkyl-C.sub.1 -C.sub.6 -alkyl, (v) C.sub.5 -C.sub.7 -cycloalkenyl, (vi) C.sub.5 -C.sub.7 -cycloalkenyl-C.sub.1 -C.sub.6 -alkyl, (vii) C.sub.1 -C.sub.6 -alkoxy-C.sub.1 -C.sub.6 -alkyl or benzyloxy-C.sub.1 -C.sub.6 -alkyl, (viii) C.sub.1 -C.sub.6 -thioalkoxy-C.sub.1 -C.sub.6 -alkyl or benzyl-S--C.sub.1 -C.sub.6 -alkyl, (ix) C.sub.1 -C.sub.6 -alkylamino, (x) di-C.sub.1 -C.sub.6 -alkylamino, (xi) phenyl wherein the phenyl ring is unsubstituted or substituted with a substituent selected from halo, C.sub.1 -C.sub.6 -loweralkyl, hydroxy, C.sub.1 -C.sub.6 -alkoxy, benzyloxy, C.sub.1 -C.sub.6 -thioalkoxy and benzyl-S--, (xii) phenyl -C.sub.1 -C.sub.6 -alkyl wherein the phenyl ring is unsubstituted or substituted as defined above, (xiii) di-C.sub.1 -C.sub.6 -alkylamino -C.sub.1 -C.sub.6 -alkyl, (xiv) C.sub.1 -C.sub.6 -alkoxy or benzyloxy and (xv) C.sub.1 -C.sub.6 -thioalkoxy or benzyl-S--; n is 1; R.sub.2 is hydrogen or C.sub.1 -C.sub.6 -loweralkyl; R.sub.4 is phenyl or substituted phenyl wherein the phenyl ring is substituted with a substituent selected from (i) halo, (ii) C.sub.1 -C.sub.6 -loweralkyl, (iii) hydroxy, (iv) C.sub.1 -C.sub.6 -alkoxy or benzyloxy and (v) C.sub.1 -C.sub.6 -thioalkoxy or benzyl-S--; R.sub.6 is hydrogen or C.sub.1 -C.sub.6 -loweralkyl; R.sub.7 is thiazolyl or oxazolyl wherein the thiazolyl or oxazolyl ring is unsubstituted and R.sub.3 is C.sub.2 -C.sub.6 -loweralkyl and Z is absent, --O--, --S-- or --CH.sub.2 --; or R.sub.7 is thiazolyl or oxazolyl wherein the thiazolyl or oxazolyl ring is substituted with C.sub.1 -C.sub.6 -loweralkyl and R.sub.3 is C.sub.1 -C.sub.6 -loweralkyl and Z is absent, --O--, --S--, --CH.sub.2 -- or --N(R.sub.8)-- wherein R.sub.8 is C.sub.1 -C.sub.6 -loweralkyl, C.sub.3 -C.sub.7 -cycloalkyl, --OH or --NHR.sub.8 a wherein R.sub.8a is hydrogen or C.sub.1 -C.sub.6 -loweralkyl; and X is --OH and Y is hydrogen; or a pharmaceutically acceptable salt thereof. 13. A compound selected from the group consisting of: (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-cyclohexyl-4-thiazolyl)methyl)amino)-ca rbonyl)valinyl)amino)-2-(N-((5-thiazolyl) methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S, 5S)-5-(N-(N-((N-Methyl-N-((2-(1,1-dimethyl)ethyl-4-thiazolyl)methyl)amino) carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphe nyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-ethenyl-4-thiazolyl)methyl)amino)-carbo nyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3 -hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(2-propenyl)-4-thiazolyl)methyl)amino)c arbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphen yl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(1-cyclopentenyl)-4-thiazolyl)methyl)am ino)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)-methoxycarbonyl)amino)-1,6- diphenyl-3hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(1-cyclohexenyl)-4-thiazolyl)methyl)ami no)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-di phenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((4-(cyclopentenyl-4-thiazolyl)methyl)amino )carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diph enyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((4-cyclohexenyl-4-thiazolyl)methyl)amino)c arbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphen yl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(1-propenyl)-4-thiazolyl)methyl)amino)c arbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphen yl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(1-methyl-1-propenyl)-4-thiazolyl)methy l)amino)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1 ,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(1-methyl-2-propenyl)-4-thiazolyl)methy l)amino)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)-amino)- 1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(1,2-dimethyl-1-propenyl)-4-thiazolyl)m ethyl)amino)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)-methoxycarbonyl)ami no)-1,6-diphenyl-3hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(1,2-(cyclopentyl)methyl-4-thiazolyl)me thyl)amino)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino )-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(cyclohexyl)methyl-4-thiazolyl)methyl)a mino)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6- diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-phenyl-4-thiazolyl)methyl)amino)-carbon yl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3- hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-benzyl-4-thiazolyl)methyl)amino)-carbon yl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3- hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(2-phenyl)ethyl-4-thiazolyl)methyl)amin o)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-dip henyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(2-(4-fluoro)phenyl-4-thiazolyl)methyl) amino)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6 -diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(2-chloro)phenyl-4-thiazolyl)methyl)ami no)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-di phenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(2-methoxy)phenyl-4-thiazolyl)methyl)am ino)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-d iphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-methoxy-4-thiazolyl)methyl)amino)-carbo nyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3 -hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-ethoxy-4-thiazolyl)methyl)amino)-carbon yl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3- hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-isoproploxy-4-thiazolyl)methyl)amino)ca rbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-dipheny l-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(N,N-dimethylamino)methyl-4-thiazolyl)m ethyl)amino)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)-ami no)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-propyl-4-thiazolyl)methyl)amino)-carbon yl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3- hydroxyhexane; (2S,3S,5S,)-5-(N-(N-(N-Methyl-N-((2-(methyl)propyl-4-thiazolyl)methyl)amino )carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diph enyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(1-methyl)propyl-4-thiazolyl)methyl)ami no)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-di phenyl-3hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(1-ethyl)propyl-4-thiazolyl)methyl)amin o)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-dip henyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-isopropyl-4-thiazolyl)methyl)amino)carb onyl)analinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl -3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-Isopropyl-4-thiazolyl)methyl)amino)carb onyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl- 3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((2-Isopropyl-4-thiazolyl)methoxycarbonyl)valinyl)amino) -2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-2-(N-(N-((2-Isopropyl-4-thiazolyl)methoxycarbonyl)valinyl)amino) -5-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((2-Isopropyl-4-thiazolyl)methoxycarbonyl)alaninyl)amino )-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((2-(N,N-Dimethylamino)-4-thiazolyl)methoxycarbonyl)vali nyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3- hydroxyhexane; (2S,3S,5S)-2-(N-(N-((2-(N,N-Dimethylamino)-4-thiazolyl)methoxycarbonyl)vali nyl)amino)-5-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxy hexane; (2S,3S,5S)-5-(N-(N-((N-Cyclopropyl-N-((2-isopropyl-4-thiazolyl)methyl)amino )carbonyl)alaninyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-dip henyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-(1-(2-Isopropyl-4-thiazolyl)ethoxycarbonyl)valinyl)amino )-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Cyclopropyl-N-((2-isopropyl-4-thiazolyl)methyl)amino )carbonyl)valinyl)amino-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphe nyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-isopropyl-4-oxazolyl)methyl)amino)carbo nyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3 -hydroxyhexane; (2S, 3S, 5S) -5-(N-(N-((N-Methyl-N-((2-isopropyl-4-oxazolyl)methyl)amino)carbonyl)valin yl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhe xane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-isopropyl-4-thiazolyl)methyl)amino)carb onyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3 -hydroxyhexane; (2S,3S,5S)-5-(N-(N-((4-Isopropyl-2-thiazolyl)methoxycarbonyl)valinyl)amino) -2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((2-(N,N-Diethylamino)-4-thiazolyl)methoxycarbonyl)valin yl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyh exane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-(((N,N-dimethylamino)-4-thiazolyl)methyl)am ino)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-d iphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((2-Isopropyl-4-thiazolyl)methoxycarbonyl)valinyl)amino) -2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(methoxymethyl)-4-thiazolyl)methyl)amin o)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-dip henyl-3-hydroxyhexane; (2S,3S,5S)-5-(N,N-((N-Methyl-N-((2-isopropyl-4-thiazolyl)methyl)amino)carbo nyl)valinyl)amino)-2-(N-((2-methyl-5-thiazolyl)methoxycarbonyl)amino)-1,6-d iphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N,N-((2-Isopropyl-4-thiazolyl)thiomethoxycarbonyl)valinyl)ami no)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-(3-(2-Isopropyl-4-thiazolyl)propanoyl)valinyl)amino)-2-( N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-isopropyl-4-thiazolyl)methyl)amino)carb onyl)valinyl)amino)-2-(N-(1-(5-thiazolyl)ethoxycarbonyl)amino)-1,6-diphenyl -3-hydroxyhexane; (2S,3S,5S)-2-(N-(N-((N-Methyl-N-((2-isopropyl-4-thiazolyl)methyl)amino)carb onyl)valinyl)amino)-5-(N-((2-methyl-5-thiazolyl)methoxycarbonyl)amino)-1,6- diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-cyclopentyl-4-thiazolyl)methyl)amino)-c arbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-dipheny l-3-hydroxyhexane; (2S,3S,5S)-5-(N,N-((N-Methyl-N-((2-cyclohexyl-4-thiazolyl)methyl)amino)-car bonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl- 3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(1,1-dimethyl)ethyl-4-thiazolyl)methyl) amino)carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6- diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N,N-((N-Methyl-N-((2-cyclobutyl-4-thiazolyl)methyl)amino)-car bonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl- 3-hydroxyhexane; (2S,3S,5S)-5-(N,N-((N-Methyl-N-((2-cyclopropyl-4-thiazolyl)methyl)amino)-ca rbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl -3-hydroxyhexane; (2S,3S,5S)-5-(N,N-((N-Methyl-N-((2-ethyl-4-thiazolyl)methyl)amino)-carbonyl )valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hyd roxyhexane: (2S,3S,5S)-5-(N,N-((N-Methyl-N-((2-ethenyl-4-thiazolyl)methyl)amino)-carbon yl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-h ydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(2-propenyl)-4-thiazolyl)methyl)amino)- carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphen yl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(1-cyclopentenyl)-4-thiazolyl)methyl)am ino)carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)-methoxycarbonyl)amino)-1,6-d iphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(1-cyclohexenyl)-4-thiazolyl)methyl)ami no)carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-dip henyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((4-cyclopentenyl-4-thiazolyl)methyl)amino) carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphen yl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((4-cyclohexenyl-4-thiazolyl)methyl)amino)c arbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-dipheny l-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(3-propenyl)-4-thiazolyl)methyl)amino)c arbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-dipheny l-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(1-propenyl)-4-thiazolyl)methyl)amino)c arbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-dipheny l-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(1-methyl-1-propenyl)-4-thiazolyl)methy l)amino)carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1, 6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(2-methyl-1-propenyl)-4-thiazolyl)methy l)amino)carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)-amino)-1 ,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(1,2-dimethyl-1-propenyl)-4-thiazolyl)m ethyl)amino)carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)-methoxycarbonyl)amin o)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(cyclopentyl)methyl-4-thiazolyl)methyl) amino)carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6- diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(cyclohexyl)methyl-4-thiazolyl)methyl)a mino)carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-d iphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N,N-((N-Methyl-N-((2-phenyl-4-thiazolyl)methyl)amino)-carbony l)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hy droxyhexane; (2S,3S,5S)-5-(N,N-((N-Methyl-N-((2-benzyl-4-thiazolyl)methyl)amino)-carbony l)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hy droxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(2-phenyl)ethyl-4-thiazolyl)methyl)amin o)carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diph enyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(2-phenyl-1-ethenyl)-4-thiazolyl)methyl )amino)carbonyl)valinyl)amino-2-(N-((5-oxazolyl)-methoxycarbonyl)amino)-1,6 -diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(4-fluoro)phenyl-4-thiazolyl)methyl)ami no)carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-dip henyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(2-chloro)phenyl-4-thiazolyl)methyl)ami no)carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-dip henyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(3-methoxy)phenyl-4-thiazolyl)methyl)am ino)carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-di phenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(2-thiazolyl)methyl)amino)-carbonyl)val inyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxy hexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(2-thiazolyl)methyl-4-thiazolyl)methyl) amino)carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6- diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-methoxy-4-thiazolyl)methyl)amino)-carbo nyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3- hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-ethoxy-4-thiazolyl)methyl)amino)-carbon yl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-h ydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-isopropyloxy-4-thiazolyl)methyl)amino)c arbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-dipheny l-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(N,N-dimethylamino)methyl-4-thiazolyl)m ethyl)amino)carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)-amin o)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-propyl-4-thiazolyl)methyl)amino)-carbon yl)valinyl)amino)-2-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydr oxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(2-methyl)propyl-4-thiazolyl)methyl)ami no)carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-dip henyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(1-methyl)propyl-4-thiazolyl)methyl)ami no)carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-dip henyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(1-ethyl)propyl-4-thiazolyl)methyl)amin o)carbonyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diph enyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-isopropyl-4-thiazolyl)methyl)amino)carb onyl)alaninyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl- 3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Ethyl-N-((2-isopropyl-4-thiazolyl)methyl)amino)carbo nyl)valinyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3- hydroxyhexane; (2S,3S,5S)-5-(N-(N-((2-Isopropyl-4-thiazolyl)methoxycarbonyl)valinyl)amino) -2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-2(N-(N-((2-Isopropyl-4-thiazolyl)methoxycarbonyl)valinyl)amino)- 5-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((2-Isopropyl-4-thiazolyl)methoxycarbonyl)alaninyl)amino )-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((2-(N,N-Dimethylamino)-4-thiazolyl)methoxycarbonyl)vali nyl)amino)-2-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyh exane; (2S,3S,5S)-2-(N-(N-((2-(N,N-Dimethylamino)-4-thiazolyl)methoxycarbonyl)vali nyl)amino)-5-(N-((5-oxazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyh exane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-ethyl-4-oxazolyl)methyl)amino)carbonyl) valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hyd roxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-methyl-4-oxazolyl)methyl)amino)carbonyl )valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hy droxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-(3-pentyl)-4-thiazolyl)methyl)amino)car bonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl -3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-isopropyl-4-thiazolyl)methyl)amino)carb onyl)valinyl)amino)-2-(N-(((2-isopropyl)-5-thiazolyl)methoxycarbonyl)amino) -1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((2-(2-Isopropyl-4-thiazolyl)ethoxy)carbonyl)valinyl)ami no)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-2-(N-(N-((2-(2-Isopropyl-4-thiazolyl)ethoxy)carbonyl)valinyl)ami no)-5-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((2-Isopropyl-4-thiazolyl)acetyl)valinyl)amino)-2-(N-((5 -thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N,N-((N-Methyl-N-((2-cyclopropyl-4-thiazolyl)methyl)amino)car bonyl)valinyl)amino)-2-(N -((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-cyclobutyl-4-thiazolyl)methyl)amino)car bonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl -3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-ethyl-4-thiazolyl)methyl)amino)carbonyl )valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hy droxyhexane; (2S,3S,5S)-5-(N-(N-((N-(1-Propyl)-N-((2-isopropyl-4-thiazolyl)methyl)amino) carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphe nyl-3-hydroxyhexane; (2S,3S,5S)-5-(N,N-((N-(Isobutyl)-N-((2-isopropyl-4-thiazolyl)methyl)amino)c arbonyl)valinyl)amino)-2-(N -((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-isopropyl-4-oxazolyl)methyl)amino)carbo nyl)-L-alaninyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphen yl-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-cyclopentyl-4-thiazolyl)methyl)amino)ca rbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-dipheny l-3-hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-Methyl-N-((2-isobutyl-4-thiazolyl)methyl)amino)carbo nyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3 -hydroxyhexane; (2S,3S,5S)-5-(N,N-((N-Ethyl-N-((2-cyclopentyl-4-thiazolyl)methyl)amino)carb onyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl- 3-hydroxyhexane; (2S,3S,5S)-5-(N-((N-Methyl-N-(2-(2-isopropyl-4-thiazolyl)ethyl)amino)carbon yl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl-3- hydroxyhexane; (2S,3S,5S)-5-(N-(N-((N-(tert-Butyloxycarbonylamino)-N-((2-isopropyl-4-thiaz olyl)methyl)amino)carbonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbony l)amino)-1,6-diphenyl-3-hydroxyhexane; and (2S,3S,5S)-5-(N-(N-((N-(Amino)-N-((2-isopropyl-4-thiazolyl)methyl)amino)car bonyl)valinyl)amino)-2-(N-((5-thiazolyl)methoxycarbonyl)amino)-1,6-diphenyl -3-hydroxyhexane Hydrochloride; or a pharmaceutically acceptable salt thereof. 14. A pharmaceutical composition for inhibiting HIV protease comprising a pharmaceutical carrier and a therapeutically effective amount of a compound of claim 1. 15. A pharmaceutical composition for inhibiting HIV protease comprising a pharmaceutical carrier and a therapeutically effective amount of a compound of claim 2. 16. A pharmaceutical composition for inhibiting HIV protease comprising a pharmaceutical carrier and a therapeutically effective amount of a compound of claim 10. 17. A pharmaceutical composition for inhibiting an HIV infection comprising a pharmaceutical carrier and a therapeutically effective amount of a compound of claim 10. 18. A method for inhibiting HIV protease comprising administering to a human in need thereof a therapeutically effective amount of a compound of claim 10. 19. A method for inhibiting an HIV infection comprising administering to a human in need thereof a therapeutically effective amount of a compound of claim 10.