Claims for Patent: 5,362,718

Summary for Patent: 5,362,718

Title:	Rapamycin hydroxyesters
Abstract:	A compound of the structure ##STR1## wherein R.sup.1 and R.sup.2 are each, independently, hydrogen or --CO(CR.sup.3 R.sup.4).sub.b (CR.sup.5 R.sup.6).sub.d CR.sup.7 R.sup.8 R.sup.9 ; R.sup.3 and R.sup.4 are each, independently, hydrogen, alkyl, alkenyl, alkynyl, trifluoromethyl, or --F; R.sup.5 and R.sup.6 are each, independently, hydrogen, alkyl, alkenyl, alkynyl, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11, or R.sup.5 and R.sup.6 may be taken together to form X or a cycloalkyl ring that is optionally mono-, di-, or tri-substituted with --(CR.sup.3 R.sup.4).sub.f 0R.sup.10 ; R.sup.7 is hydrogen, alkyl, alkenyl, alkynyl, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11 ; R.sup.8 and R.sup.9 are each, independently, hydrogen, alkyl, alkenyl, alkynyl, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11, or R.sup.8 and R.sup.9 may be taken together to form X or a cycloalkyl ring that is optionally mono-, di-, or tri-substituted with --(CR.sup.3 R.sup.4).sub.f OR.sup.10 ; R.sup.10 is hydrogen, alkyl, alkenyl, alkynyl, tri-(alkyl)silyl, tri-(alkyl)silylethyl, triphenylmethyl, benzyl, alkoxymethyl, tri-(alkyl)silylethoxymethyl, chloroethyl, or tetrahydropyranyl; R.sup.11 is hydrogen, alkyl, alkenyl, alkynyl, or phenylalkyl; X is 5-(2,2-dialkyl)[1,3]dioxanyl, 5-(2,2-dicycloalkyl)[1,3]dioxanyl, 4-(2,2-dialkyl)[1,3]dioxanyl, 4-(2,2-dicycloalkyl)[1,3]dioxanyl, 4-(2,2dialkyl)[1,3]dioxalanyl, or 4-(2,2-dicycloalkyl)[1,3]dioxalanyl; b=0-6; d=0-6; and f=0-6 with the proviso that R.sup.1 and R.sup.2 are both not hydrogen and further provided that either R.sup.1 or R.sup.2 contains at least one --(CR.sup.3 R.sup.4).sub.f OR.sup.10, X, or --(CR.sup.3 R.sup.4).sub.f OR.sup.10 substituted cycloalkyl group, or a pharmaceutically acceptable salt thereof which is useful as an immunosuppressive, antiinflammatory, antifungal, antiproliferative, and antitumor agent.
Inventor(s):	Skotnicki; Jerauld S. (Allentown, NJ), Leone; Christina L. (Princeton, NJ), Schiehser; Guy A. (Yardley, PA)
Assignee:	American Home Products Corporation (Madison, NJ)
Application Number:	08/229,261
Patent Claims:	1. A compound of the structure ##STR5## wherein R.sup.1 and R.sup.2 are each, independently, hydrogen or --CO(CR.sup.3 R.sup.4).sub.b (CR.sup.5 R.sup.6).sub.d CR.sup.7 R.sup.8 R.sup.9 ; R.sup.3 and R.sup.4 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, trifluoromethyl, or --F; R.sup.5 and R.sup.6 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11, or R.sup.5 and R.sup.6 may be taken together to form X or a cycloalkyl ring of 3-8 carbon atoms that is optionally mono-, di-, or tri-substituted with --(CR.sup.3 R.sup.4).sub.f OR.sup.10 ; R.sup.7 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3 --F, or--CO.sub.2 R.sup.11 ; R.sup.8 and R.sup.9 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11, or R.sup.8 and R.sup.9 may be taken together to form X or a cycloalkyl ring of 3-8 carbon atoms that is optionally mono-, di-, or tri-substituted with --(CR.sup.3 R.sup.4).sub.f OR.sup.10 ; R.sup.10 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms alkynyl of 2-7 carbon atoms, tri-(alkyl of 1-6 carbon atoms)silyl, tri-(alkyl of 1-6 carbon atoms)silylethyl, triphenylmethyl, benzyl, alkoxymethyl of 2-7 carbon atoms, tri-(alkyl of 1-6 carbon atoms)silylethoxymethyl, chloroethyl, or tetrahydropyranyl; R.sup.11 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, or phenylalkyl of 7-10 carbon atoms; X is 5-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxanyl, 5-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxalanyl, or 4-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxalanyl; b=0-6; d=0-6 ; and f=0-6 with the proviso that R.sup.1 and R.sup.2 are both not hydrogen and further provided that either R.sup.1 or R.sup.2 contains at least one --(CR.sup.3 R.sup.4).sub.f OR.sup.10, X, or --(CR.sup.3 R.sup.4).sub.f OR.sup.10 substituted cycloalkyl of 3-8 carbon atoms group, or a pharmaceutically acceptable salt thereof. 2. The compound of claim 1, wherein R.sup.2 is hydrogen or a pharmaceutically acceptable salt thereof. 3. The compound of claim 2, wherein b=0 and d=0 or a pharmaceutically acceptable salt thereof. 4. The compound of claim 3, wherein R.sup.8 and R.sup.9 are each, independently hydrogen, alkyl, or --(CR.sup.3 R.sup.4).sub.f OR.sup.10, or are taken together to form X or a pharmaceutically acceptable salt thereof. 5. The compound of claim 1 which is rapamycin 42-ester with (tetrahydropyran-2-yloxy)acetic acid or a pharmaceutically acceptable salt thereof. 6. The compound of claim 1 which is rapamycin 42-ester with hydroxyacetic acid or a pharmaceutically acceptable salt thereof. 7. The compound of claim 1 which is rapamycin 42-ester with 2,2-dimethyl-3-(tetrahydropyran-2-yloxy)propionic acid or a pharmaceutically acceptable salt thereof. 8. The compound of claim 1 which is rapamycin 42-ester with 3-hydroxy-2,2-dimethylpropionic acid or a pharmaceutically acceptable salt thereof. 9. The compound of claim 1 which is rapamycin 42-ester with 2,2-dimethyl[1,3]dioxalane-4-carboxylic acid or a pharmaceutically acceptable salt thereof. 10. The compound of claim 1 which is rapamycin 31,42-diester with 2,2-dimethyl[1,3]dioxalane-4-carboxylic acid or a pharmaceutically acceptable salt thereof. 11. The compound of claim 1 which is rapamycin 42-ester with 2,3-dihydroxypropionic acid or a pharmaceutically acceptable salt thereof. 12. The compound of claim 1 which is rapamycin 42-ester with 2,2-dimethyl[1,3]dioxane-5-carboxylic acid or a pharmaceutically acceptable salt thereof. 13. The compound of claim 1 which is rapamycin 42-ester with 3-hydroxy-2-hydroxymethylpropionic acid or a pharmaceutically acceptable salt thereof. 14. The compound of claim 1 which is rapamycin 42-ester with 2,2,5-trimethyl[1,3]dioxane-5-carboxylic acid or a pharmaceutically acceptable salt thereof. 15. The compound of claim 1 which is rapamycin 42-ester with 2,2-bis(hydroxymethyl)propionic acid or a pharmaceutically acceptable salt thereof. 16. The compound of claim 1 which is rapamycin 42-ester with 2,2-dimethyl-5-(2-trimethylsilanylethoxymethyl)[1,3]-dioxane-5-carboxylic acid or a pharmaceutically acceptable salt thereof. 17. The compound of claim 1 which is rapamycin 42-ester with 3-methyl-1,5-dioxa-spiro[5.5]undecane 3-carboxylic acid or a pharmaceutically acceptable salt thereof. 18. The compound of claim 1 which is rapamycin 31,42-diester with 3-methyl-1,5-dioxa-spiro[5.5]undecane 3-carboxylic acid or a pharmaceutically acceptable salt thereof. 19. A method of treating transplantation rejection or graft vs. host disease in a mammal in need thereof, which comprises administering to said mammal an antirejection effective amount of a compound of the structure ##STR6## wherein R.sup.1 and R.sup.2 are each, independently, hydrogen or --CO(CR.sup.3 R.sup.4).sub.b (CR.sup.5 R.sup.6).sub.d CR.sup.7 R.sup.8 R.sup.9 ; R.sup.3 and R.sup.4 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, trifluoromethyl, or --F; R.sup.5 and R6 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11, or R.sup.5 and R.sup.6 may be taken together to form X or a cycloalkyl ring of 3-8 carbon atoms that is optionally mono-, di-, or tri-substituted with --(CR.sup.3 R.sup.4).sub.f OR .sup.10 ; R.sup.7 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11 ; R.sup.8 and R.sup.9 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11, or R.sup.8 and R.sup.9 may be taken together to form X or a cycloalkyl ring of 3-8 carbon atoms that is optionally mono-, di-, or tri-substituted with --(CR.sup.3 R.sup.4).sub.f OR.sup.10 ; R.sup.10 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, tri-(alkyl of 1-6 carbon atoms)silyl, tri-(alkyl of 1-6 carbon atoms)silylethyl, triphenylmethyl, benzyl, alkoxymethyl of 2-7 carbon atoms, tri-(alkyl of 1-6 carbon atoms)silylethoxymethyl, chloroethyl, or tetrahydropyranyl; R.sup.11 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, or phenylalkyl of 7-10 carbon atoms; X is 5-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxanyl, 5-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxalanyl, or 4-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxalanyl; b=0-6; d=0-6 ; and f=0-6 with the proviso that R.sup.1 and R.sup.2 are both not hydrogen and further provided that either R.sup.1 or R.sup.2 contains at least one --(CR.sup.3 R.sup.4).sub.f OR.sup.10, X, or --(CR.sup.3 R.sup.4).sub.f OR.sup.10 substituted cycloalkyl of 3-8 carbon atoms group, or a pharmaceutically acceptable salt thereof. 20. A method of treating a fungal infection in a mammal in need thereof, which comprises administering to said mammal an antifungal effective amount of a compound of the structure ##STR7## wherein R.sup.1 and R.sup.2 are each, independently, hydrogen or --CO(CR.sup.3 R.sup.4).sub.b (CR.sup.5 R.sup.6).sub.d CR.sup.7 R.sup.8 9.sup.9 ; R.sup.3 and R.sup.4 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, trifluoromethyl, or --F; R.sup.5 and R.sup.6 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10,--CF.sub.3, --F, or --CO.sub.2 R.sup.11, or R.sup.5 and R.sup.6 may be taken together to form X or a cycloalkyl ring of 3-8 carbon atoms that is optionally mono-, di-, or tri-substituted with --(CR.sup.3 R.sup.4).sub.f OR.sup.10 ; R.sup.7 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sub.11 ; R.sup.8 and R.sup.9 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11, or R.sup.8 and R.sup.9 may be taken together to form X or a cycloalkyl ring of 3-8 carbon atoms that is optionally mono-, di-, or tri-substituted with --(CR.sup.3 R.sup.4).sub.f OR.sup.10 ; R.sup.10 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, tri-(alkyl of 1-6 carbon atoms)silyl, tri-(alkyl of 1-6 carbon atoms)silylethyl, triphenylmethyl, benzyl, alkoxymethyl of 2-7 carbon atoms, tri-(alkyl of 1-6 carbon atoms)silylethoxymethyl, chloroethyl, or tetrahydropyranyl; R.sup.11 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, or phenylalkyl of 7-10 carbon atoms; X is 5-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxanyl, 5-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxalanyl, or 4-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxalanyl; b=0-6; d=0-6; and f=0-6 with the proviso that R.sup.1 and R.sup.2 are both not hydrogen and further provided that either R.sup.1 or R.sup.2 contains at least one --(CR.sup.3 R.sup.4).sub.f OR.sup.10, X, or --(CR.sup.3 R.sup.4).sub.f OR.sup.10 substituted cycloalkyl of 3-8 carbon atoms group, or a pharmaceutically acceptable salt thereof. 21. A method of treating rheumatoid arthritis in a mammal in need thereof, which comprises administering to said mammal an antiarthritis effective amount of a compound of the structure ##STR8## wherein R.sup.1 and R.sup.2 are each, independently, hydrogen or --CO(CR.sup.3 R.sup.4).sub.b (CR.sup.5 R.sup.6).sub.d CR.sup.7 R.sup.8 R.sup.9 ; R.sup.3 and R.sup.4 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, trifluoromethyl, or --F; R.sup.5 and R.sup.6 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11, or R.sup.5 and R.sup.6 may be taken together to form X or a cycloalkyl ring of 3-8 carbon atoms that is optionally mono-, di-, or tri-substituted with --(CR.sup.3 R.sup.4).sub.f OR.sup.10 ; R.sup.7 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11 ; R.sup.8 and R.sup.9 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11, or R.sup.8 and R.sup.9 may be taken together to form X or a cycloalkyl ring of 3-8 carbon atoms that is optionally mono-, di-, or tri-substituted with --(CR.sup.3 R.sup.4).sub.f OR.sup.10 ; R.sup.10 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, tri-(alkyl of 1-6 carbon atoms)silyl, tri-(alkyl of 1-6 carbon atoms)silylethyl, triphenylmethyl, benzyl, alkoxymethyl of 2-7 carbon atoms, tri-(alkyl of 1-6 carbon atoms)silylethoxymethyl, chloroethyl, or tetrahydropyranyl; R.sup.11 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, or phenylalkyl of 7-10 carbon atoms; X is 5-(2,2di-(alkyl of 1-6 carbon atoms))[1,3]dioxanyl, 5-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(alkyl of 1-6 carbon atoms))[3]dioxalanyl, or 4-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxalanyl; b=0-6; d=0-6; and f=0-6 with the proviso that R.sup.1 and R.sup.2 are both not hydrogen and further provided that either R.sup.1 or R.sup.2 contains at least one --(CR.sup.3 R.sup.4).sub.f OR.sup.10, X, or --(CR.sup.3 R.sup.4).sub.f OR.sup.10 substituted cycloalkyl of 3-8 carbon atoms group, or a pharmaceutically acceptable salt thereof. 22. A method of treating restenosis in a mammal in need thereof, which comprises administering to said mammal an antiproliferative effective amount of a compound of the structure ##STR9## wherein R.sup.1 and R.sup.2 are each, independently, hydrogen or --CO(CR.sup.3 R.sup.4).sub.b CR.sup.5 R.sup.6).sub.d CR.sup.7 R.sup.8 R.sup.9 ; R.sup.3 and R.sup.4 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, trifluoromethyl, or --F; R.sup.5 and R.sup.6 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11, or R.sup.5 and R.sup.6 may be taken together to form X or a cycloalkyl ring of 3-8 carbon atoms that is optionally mono-, di-, or tri-substituted with --(CR.sup.3 R.sup.4).sub.f OR.sup.10 ; R.sup.7 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11 ; R.sup.8 and R.sup.9 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11, or R.sup.8 and R.sup.9 may be taken together to form X or a cycloalkyl ring of 3-8 carbon atoms that is optionally mono-, di-, or tri-substituted with --(CR.sup.3 R.sup.4).sub.f OR.sup.10 ; R.sup.10 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, tri-(alkyl of 1-6 carbon atoms)silyl, tri-(alkyl of 1-6 carbon atoms)silylethyl, triphenylmethyl, benzyl, alkoxymethyl of 2-7 carbon atoms, tri-(alkyl of 1-6 carbon atoms)silylethoxymethyl, chloroethyl, or tetrahydropyranyl; R.sup.11 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, or phenylalkyl of 7-10 carbon atoms; X is 5-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxanyl, 5-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxalanyl, or 4-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxalanyl; b=0-6; d=0-6; and f=0-6 with the proviso that R.sup.1 and R.sup.2 are both not hydrogen and further provided that either R.sup.1 or R.sup.2 contains at least one --(CR.sup.3 R.sup.4).sub.f OR.sup.10, X, or --(CR.sup.3 R.sup.4).sub.f OR.sup.10 substituted cycloalkyl of 3-8 carbon atoms group, or a pharmaceutically acceptable salt thereof. 23. A method of treating pulmonary inflammation in a mammal in need thereof, which comprises administering to said mammal an antiinflammatory effective amount of a compound of the structure ##STR10## wherein R.sup.1 and R.sup.2 are each, independently, hydrogen or --CO(CR.sup.3 R.sup.4).sub.b (CR.sup.5 R.sup.6).sub.d CR.sup.7 R.sup.8 R.sup.9 ; R.sup.3 and R.sup.4 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, trifluoromethyl, or --F; R.sup.5 and R.sup.6 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11, or R.sup.5 and R.sup.6 may be taken together to form X or a cycloalkyl ring of 3-8 carbon atoms that is optionally mono-, di-, or tri-substituted with --(CR.sup.3 R.sup.4).sub.f OR.sup.10 ; R.sup.7 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11 ; R.sup.8 and R.sup.9 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3 --F, or --CO.sub.2 R.sup.11, or R.sup.8 and R.sup.9 may be taken together to form X or a cycloalkyl ring of 3-8 carbon atoms that is optionally mono-, di-, or tri-substituted with --(CR.sup.3 R.sup.4).sub.f OR.sup.10 ; R.sup.10 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, tri-(alkyl of 1-6 carbon atoms)silyl, tri-(alkyl of 1-6 carbon atoms)silylethyl, triphenylmethyl, benzyl, alkoxymethyl of 2-7 carbon atoms, tri-(alkyl of 1-6 carbon atoms)silylethoxymethyl, chloroethyl, or tetrahydropyranyl; R.sup.11 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, or phenylalkyl of 7-10 carbon atoms; X is 5-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxanyl, 5-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxalanyl, or 4-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxalanyl; b=0-6; d=0-6; and f=0-6 with the proviso that R.sup.1 and R.sup.2 are both not hydrogen and further provided that either R.sup.1 or R.sup.2 contains at least one --(CR.sup.3 R.sup.4).sub.f OR.sup.10, X, or --(CR.sup.3 R.sup.4).sub.f OR.sup.10 substituted cycloalkyl of 3-8 carbon atoms group, or a pharmaceutically acceptable salt thereof. 24. A pharmaceutical composition which comprises a compound of the structure ##STR11## wherein R.sup.1 and R.sup.2 are each, independently, hydrogen or --CO(CR.sup.3 R.sup.4).sub.b CR.sup.5 R.sup.6).sub.d CR.sup.7 R.sup.8 R.sup.9 ; R.sup.3 and R.sup.4 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, trifluoromethyl, or --F; R.sup.5 and R.sup.6 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11, or R.sup.5 and R.sup.6 may be taken together to form X or a cycloalkyl ring of 3-8 carbon atoms that is optionally mono-, di-, or tri-substituted with --(CR.sup.3 R.sup.4).sub.f OR.sup.10 ; R.sup.7 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3, --F, or --CO.sub.2 R.sup.11 ; R.sup.8 and R.sup.9 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, --(CR.sup.3 R.sup.4).sub.f OR.sup.10, --CF.sub.3 --F, or --CO.sub.2 R.sup.11, or R.sup.8 and R.sup.9 may be taken together to form X or a cycloalkyl ring of 3-8 carbon atoms that is optionally mono-, di-, or tri-substituted with --(CR.sup.3 R.sup.4).sub.f OR.sup.10 ; R.sup.10 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, tri-(alkyl of 1-6 carbon atoms)silyl, tri-(alkyl of 1-6 carbon atoms)silylethyl, triphenylmethyl, benzyl, alkoxymethyl of 2-7 carbon atoms, tri-(alkyl of 1-6 carbon atoms)silylethoxymethyl, chloroethyl, or tetrahydropyranyl; R.sup.11 is hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 2-7 carbon atoms, alkynyl of 2-7 carbon atoms, or phenylalkyl of 7-10 carbon atoms; X is 5-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxanyl, 5-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxanyl, 4-(2,2-di-(alkyl of 1-6 carbon atoms))[1,3]dioxalanyl, or 4-(2,2-di-(cycloalkyl of 3-8 carbon atoms))[1,3]dioxalanyl; b=0-6; d=0-6; and f=0-6 with the proviso that R.sup.1 and R.sup.2 are both not hydrogen and further provided that either R.sup.1 or R.sup.2 contains at least one --(CR.sup.3 R.sup.4).sub.f OR.sup.10, X, or --(CR.sup.3 R.sup.4).sub.f OR.sup.10 substituted cycloalkyl of 3-8 carbon atoms group, or a pharmaceutically acceptable salt thereof, and a pharmaceutical carrier.