Patent ID: 9567340
Date: 2017-02-14
CPC Classifications: A61K,A61P,C07D,C07K

Claim:
1. A compound of formula III: or a pharmaceutically acceptable salt thereof, wherein: R X is selected from the group consisting of: OH, SH, CO  and NHR L R R R when there is a double bond present between C2′ and C3′, R when there is a single bond present between C2′ and C3′, R where R 26a and R 26b are independently selected form H, F, C 1-4 saturated alkyl, C 2-3 alkenyl, which alkyl and alkenyl groups are optionally substituted by a group selected from C 1-4 alkyl amido and C 1-4 alkyl ester; or, when one of R 26a and R 26b is H, the other is selected from nitrile and a C 1-4 alkyl ester; R″ is a C Y and Y′ are selected from O, S, or NH; either: