EPOTHILONE DERIVATIVES, PROCESS FOR THE PREPARATION THEREOF AND PHARMACEUTICAL COMPOSITIONS CONTAINING THE SAME

摘要

Epothilone derivatives (I) are new. They are prepared from a number of new and known starting compounds. - Epothilone derivatives of formula (I) are new. R1a, R1b = H, 1-10C alkyl, aryl, 7-20C aralkyl or together form (CH2)m; m = 2-5; R2a, R2b = have the same meanings as R1a and R1b, provided that when D-E is CH2-CH2 or Y is O, then R2a and R2b are not H or CH3; R3, R5 = H, 1-10C alkyl, aryl or 7-20C aralkyl; R4a, R4b have the same meanings as R1a, R1b or R2a, R2b; D-E = CH2-CH2, CH=CH, Ctriple boundC, epoxy, CH(OH)-CH(OH) or CH(OH)-CH2; R6, R7 = H, or together form a bond or an O atom; R8 = H, 1-10C alkyl, aryl or 7-20C aralkyl, which are all optionally substituted; X = O, two OR23 groups, a 2-10C alkylene-alpha , omega -dioxy group, H/OR9 or CR10R11; R23 = 1-20C alkyl; R9 = H or a protecting group; R10, R11 = H, 1-10C alkyl, aryl or 7-20C aralkyl, or together form a 5-7 membered carbocycle; Y = one O or two H atoms; Z = one O atom or H/OR12; and R12 = H or a protecting group.