Taxoid anti-tumor agents and pharmaceutical compositions thereof

摘要

This invention relates to a taxoid of the formula (I): wherein R1 is a C3-C5 alkyl or alkenyl or trifluoromethyl radical; R2 is a C3-C5 branched alkyl radical; R3 and R4 are independently selected from hydrogen and hydroxyl protecting groups including functional groups which increase the water solubility of the taxoid antitumor agent; R5 is a hydrogen, an acyl radical, or an alkoxylcarbonyl or carbamoyl radical; and R6 is an acyl radical. The compounds of formula I are useful as antitumor agents or their precursors. This invention also relates to a pharmaceutical composition having antineoplastic activity comprising the compound of formula (I) and a physiologically acceptable carrier and method of treatment using the compound of formula I.