(4R)-4-allyl-4-demethylepothilone B 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
二氯甲烷 为溶剂,
以28%的产率得到(1S,5S,7S,9R,13S,14S,15R,17R)-14-hydroxy-9,13,15,17-tetramethyl-5-[(E)-1-(2-methyl-1,3-thiazol-4-yl)prop-1-en-2-yl]-4,8,20-trioxatricyclo[15.3.0.07,9]icosane-3,16,19-trione