Patent ID: 6172110
Filing Date: 2001-01-09
Classification: A61P,C07J

Abstract:
A compound of Formula I: ##STR11##or a pharmaceutically acceptable salt thereof; whereinR.sub.1 is a C.sub.2 -C.sub.20 substituted or unsubstituted carboxyacyl,R.sub.2 is a C.sub.2 -C.sub.20 substituted or unsubstituted carboxyacyl; andR.sub.3 is hydrogen, halogen, amino, optionally substituted mono- or di-alkylamino, or --OR.sub.4, where R.sub.4 is hydrogen, C.sub.1-4 alkanoyl, benzoyl, or C.sub.2 -C.sub.20 substituted or unsubstituted carboxyacyl;wherein the dashed line represents an optional double bond between C20 and C29; with the proviso that when R.sub.3 is hydrogen, R.sub.1 and R.sub.2 are not both selected from the group consisting of succinyl, maleyl fumaroyl and glutaryl.