Patent ID: 6313108
Filing Date: 2001-11-06
Classification: A61P,C07J

Abstract:
A compound having the structural formula: ##STR4##whereinR.sub.1 is O, (H,H), (H,OR), or NOR with R being hydrogen, (C.sub.1-6) alkyl, or (C.sub.1-6) acyl;R.sub.2 is (C.sub.2-4)alkyl, (C.sub.2-4) alkenyl, (C.sub.2-4) alkynyl, cyclopropyl, or cyclopropenyl;R.sub.3 is hydrogen, (C.sub.1-2) alkyl, or ethenyl;R.sub.4 is (C.sub.1-2) alkyl; andR.sub.5 is hydrogen, or (C.sub.1-15) acyl.