(2R,4aR,5aS,9aR,11aS)-8-allyl-8,9a-dimethyl-2-phenyloctahydro-[1,3]dioxino[5,4-b]pyrano[2,3-f]oxepin-7(8H)-one 在
sodium tetrahydroborate 作用下,
以
乙醇 为溶剂,
反应 2.0h,
以96%的产率得到(2R,4aR,5aS,7R,8S,9aR,11aS)-8-allyl-8,9a-dimethyl-2-phenyldecahydro-[1,3]dioxino[5,4-b]pyrano[2,3-f]oxepin-7-ol