ethyl (2R,3R,4S,4aR,5R,7S,8R,8aR)-4a,5-dihydroxy-8-[(2-methylpropan-2-yl)oxycarbonylamino]-3,4-bis(phenylmethoxy)-2-(phenylmethoxymethyl)-2,3,4,5,6,7,8,8a-octahydrochromene-7-carboxylate 在
lithium aluminium tetrahydride 作用下,
以
四氢呋喃 为溶剂,
以78%的产率得到tert-butyl N-[(2R,3R,4S,4aR,5R,7S,8R,8aR)-4a,5-dihydroxy-7-(hydroxymethyl)-3,4-bis(phenylmethoxy)-2-(phenylmethoxymethyl)-2,3,4,5,6,7,8,8a-octahydrochromen-8-yl]carbamate