摘要:
A process is provided for preparing 4-alkyl- or 4-aryl-oxycarbonyl paclitaxel analogs which includes the steps of converting paclitaxel into a C-7 acylprotected paclitaxel employing an electrophilic protecting group, such as benzoyloxycarbonyl, and converting the C-7 protected analog into the 4-alkyloxycarbonyl or 4-aryloxycarbonyl paclitaxel analog. Novel intermediates produced in the process are also provided.
摘要:
Compounds are provided which have the structure of Formula (I): wherein R is hydrogen or C1-C4 alkyl; and each of R1 and R2 is independently hydrogen, C1-C4 alkyl, halo or C1-C4 alkoxy, and salts thereof, which compounds are useful as antidiabetic, hypolipidemic, and antiobesity agents.