Claims
- 1. A compound having a structural formula selected from the group consisting of ##STR315## wherein R.sub.1p, R.sub.2p, R.sub.3p and R.sub.5p are individually selected from the group consisting of hydrogen, halogen, hydroxy, protected hydroxy, alkyl of 1 to 4 carbon atoms optionally substituted with at least one halogen, alkoxy of 1 to 4 carbon atoms alkylthio of 1 to 4 carbon atoms, --NO.sub.2, --CN, --NH.sub.2, protected amino, mono- and dialkylamino of 1 to 4 carbon toms, carbamoyl, (alkylamino) carbonyl of 2 to 5 carbon atoms, (dialkylamino) 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 Ry are individually hydrogen or alkyl of 1 to 4 carbon atoms, R.sub.4p is selected from the group consisting of --OH, protected hydroxy and acyloxy of 1 to 8 carbon atoms, with the proviso that when R.sub.3p is --OH or acyloxy of 1 to 8 carbon atoms, at least one of R.sub.1p, R.sub.2p and R.sub.5p is other than hydrogen, wherein R.sub.10 is the remainder of an easily cleavable ester and R.sub.7p is K or L, in which the hydroxy or amino are protected ##STR317## wherein R'.sub.1 is selected from the group consisting of alkyl of 1 to 4 carbon atoms, --CN, carboxy and alkoxy carbonyl of 1 to 4 alkoxy carbon atoms.
Priority Claims (2)
Number |
Date |
Country |
Kind |
91 15416 |
Dec 1991 |
FRX |
|
92 11520 |
Sep 1992 |
FRX |
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PRIOR APPLICATION
This application is a division of U.S. patent application Ser. No. 453,923 filed May 30, 1995 which 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.
Foreign Referenced Citations (1)
Number |
Date |
Country |
376724 |
Jul 1990 |
EPX |
Divisions (2)
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Number |
Date |
Country |
Parent |
453923 |
May 1995 |
|
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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