(1R,5S)-1-[(2S,5S,2'R,3'R,5'S)-5'-((2R,5R,6S)-5-Benzyloxy-6-ethyl-5-methyl-tetrahydro-pyran-2-yl)-2'-(N',N'-dimethyl-hydrazino)-2,3',5'-trimethyl-octahydro-[2,2']bifuranyl-5-yl]-1-(1-methoxy-1-methyl-ethoxy)-5,7-dimethyl-3-methylene-oct-6-en-2-one 在
sodium hydrogen sulfate 作用下,
以
二氯甲烷 、
正戊烷 为溶剂,
反应 7.0h,
以88%的产率得到<1R,1(2S,5S,5(2R,3R,5S,5(2S,3R,6R))),5S>-1-<5-<5-<2-ethyl-3-methyl-3-(phenylmethoxy)tetrahydropyran-2-yl>-2-hydroxy-3,5-dimethyltetrahydrofuran-2-yl>-5-methyltetrahydrofuran-2-yl>-1-hydroxy-5,7-dimethyl-3-methylene-6-octen-2-one