Claims
- 1. A compound having a formula selected from the group ##STR315## wherein R.sub.1p, R.sub.2p, R.sub.3p and R.sub.5p have the definition of R.sub.1, R.sub.2, R.sub.3 and R.sub.5 which are individually selected from the group consisting of hydrogen, halogen, hydroxy, alkyl of 1 to 4 carbon atoms optionally substituted with at least one member of the group consisting of -halogen, alkoxy and alkylthio of 1 to 4 carbon atoms, --NO.sub.2, --CN, NH.sub.2, mono- and dialkylamino of 1 to 4 carbon atoms, carbamoyl, (alkylamino) carbonyl of 2 to 5 carbon atoms, di(alkylamino) carbonyl of 3 to 9 carbon atoms, carboxy, alkoxycarbonyl of 2 to 5 carbon atoms, acyloxy of 1 to 8 carbon atoms and ##STR316## and Rx and Ry are individually hydrogen or alkyl of 1 to 4 carbon atoms, and R.sub.4p has the definition of R.sub.4 which is acyloxy of 1 to 8 carbon atoms or R.sub.1p, R.sub.2p, R.sub.3p, and R.sub.5p are a protected form and R.sub.4p is a protected form of hydroxy, R.sub.10 is the remainder of an easily cleavable ester.
Priority Claims (2)
Number |
Date |
Country |
Kind |
91 15416 |
Dec 1991 |
FRX |
|
92 11520 |
Sep 1992 |
FRX |
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Parent Case Info
PRIOR APPLICATION
This application is a division of U.S. patent application Ser. No. 167,192 filed Dec. 13, 1993, now U.S. Pat. No. 5,587,372, which is a continuation-in-part of U.S. patent application Ser. No. 989,235 filed Dec. 11, 1992, now U.S. Pat. No. 5,455,238.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4435419 |
Epstein et al. |
Mar 1984 |
|
Non-Patent Literature Citations (4)
Entry |
Effenberger;Tetrahedron Lett.;31(9), pp. 1249-1252, 1990. |
Pettersson et al; J. Pharm.Bioed.Anal.;4(2), pp. 221-235, 1986. |
Musser et al; J.Med.Chem.,33(1) pp. 240-245, 1990. |
Chenevert et al; Can.J.Chem., 68(2), pp. 314-316, 1990. |
Divisions (1)
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Number |
Date |
Country |
Parent |
167192 |
Dec 1993 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
989235 |
Dec 1992 |
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