ETHER DERIVATIVE

摘要

A novel taxol derivative having an antitumor effect and represented by formula (I), wherein R<1> represents phenyl; R<2> represents alkyl, alkenyl, alkynyl, cycloalkyl or alkoxy; R<3> represents hydroxy, hydrogen or halogeno; R<4> represents alkyl, alkenyl or alkynyl; R<5> represents hydrogen, hydroxy, halogeno or alkyl; R<6> represents hydrogen, hydroxy, halogeno or alkyl; R<7> represents alkyl, alkenyl, alkynyl, cycloalkyl, aryl or a heterocycle; and R<8> represents alkyl, aryl or alkoxy.