((E)-(R)-5-{(1R,3aS,7aR)-4-[2-[(3S,5R)-3,5-Bis-(tert-butyl-dimethyl-silanyloxy)-2-methylene-cyclohex-(Z)-ylidene]-eth-(E)-ylidene]-7a-methyl-octahydro-inden-1-yl}-2-hydroxy-hex-3-enyl)-phosphonic acid dimethyl ester 在
Dowex resin 作用下,
以
甲醇 、
二氯甲烷 为溶剂,
以15.2%的产率得到((E)-(2S,5R)-5-{(1R,3aS,7aR)-4-[2-[(3S,5R)-3,5-Dihydroxy-2-methylene-cyclohex-(Z)-ylidene]-eth-(E)-ylidene]-7a-methyl-octahydro-inden-1-yl}-2-hydroxy-hex-3-enyl)-phosphonic acid dimethyl ester