2,2-dimethyl-propionic acid (1S,2R)-1-{(1R,5R,6R)-6-[(S)-2-(tert-butyl-diphenyl-silanyloxy)-pent-4-enyl]-5-isopropyl-2-methyl-cyclohex-2-enylmethyl}-2-hydroxy-but-3-enyl ester 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
二氯甲烷 为溶剂,
以21%的产率得到2,2-dimethyl-propionic acid (Z)-(1R,4aR,6S,7R,11S,12aR)-11-(tert-butyl-diphenylsilanyloxy)-7-hydroxy-1-isopropyl-4-methyl-1,2,4a,5,6,7,10,11,12,12a-decahydro-benzocyclodecen-6-yl ester