(R)-5-methoxy-7-(4-methoxybenzyloxy)-2,2-dimethyl-3-oxoheptanal 、
烯丙基溴化镁 在
(4S,5S)-chloro(cyclopentadienyl)(2,2-dimethyl-α,α,α',α'-tetraphenyl-1,3-dioxolane-4,5-dimethanolato-O,O
α)titanium 作用下,
以
乙醚 为溶剂,
反应 3.75h,
以93%的产率得到(3R,7R)-7-hydroxy-3-methoxy-1-(4-methoxybenzyloxy)-6,6-dimethyldec-9-en-5-one