Patent ID: 7229996
Filing Date: 2007-06-12
Classification: A61P,C07D

Abstract:
1. A compound having a structural formula I: a pharmaceutically acceptable salt thereof, wherein: R is hydrogen or acetyl, L is a linker selected from one or any combination of two or three of the following: wherein the carbon or nitrogen atoms of the linker group are substituted by 0 to 3 substituents selected from (C 1 -C 6 )alkyl, substituted (C 1 -C 6 )alkyl, heterocycloalkyl, amino, (C 1 -C 6 )alkylamino, di(C 1 -C 6 )alkylamino. hydroxyl, or (C 1 -C 6 )alkoxy; and provided L is not wherein R 1 is H, C 1 -C 6 )alkyl, or substituted (C 1 -C 6 )alkyl.