Patent ID: 6589979
Filing Date: 2003-07-08
Classification: A61P,C07D

Abstract:
A compound of formula: wherein R and R1 are each independently hydrogen, a C1-C18 acyl group, an aroyl group which may be substituted or unsubstituted, or â€”CONR6R7; R2 is hydrogen or forms a carbonate or thiocarbonate with R3; R3 is hydrogen, â€”OH, or forms a carbonate or thiocarbonate with R2; R4 is a benzoyl group which is unsubstituted or substituted at the meta position or a hetaroyl group; R6 and R7 are a C1-C4 alkyl group, a benzyl group, or a phenyl group; R1 is hydrogen or a C1-C4 alkyl group; R11 is a C1-C4 alkyl group, a C2-C6 alkenyl group, an aryl group, or a hetaryl group; and R111 is a C1-C4 alkyl group, a C1-C18 acyl group, an aryl group, or a tert-butoxy group, with the proviso that both R and R1 cannot be hydrogen.