PROCESS FOR PRODUCING NEW, FURYL AND THIENYL GROUP-SUBSTITUTED TAXANE DERIVATIVES AND PHARMACEUTICAL COMPOSITIONS COMPRISING SUCH COMPOUNDS AS ACTIVE INGREDIENT

摘要

A taxane derivative of the formula wherein R<5> is Z is -OT<5>, T<5> is hydrogen, hydroxyl protecting group, or -COT<6>, T<6> is H, C<5>-C1/4 alkyl, C<5>-C1/4 alkenyl, C<5>-C1/4 alkynyl or monocylic aryl, R<7> is benzoyl, substituted benzoyl or C<5>-C1/4 alkoxycarbonyl, Ac is acetyl, and E<5> and E<6> are independently selected from hydrogen and functional groups which increase the water solubility of the taxane derivative are useful as antitumor agents.