(1S,2S,4aR,5S,8aS)-2-[(E)-6-((5R,6R)-3,4-Dimethoxy-2-oxo-1-oxa-spiro[4.5]deca-3,8-dien-6-yl)-3-(2-methoxy-ethoxymethoxycarbonyl)-hex-5-enyl]-5-methoxymethoxy-1-methyl-1,2,4a,5,6,7,8,8a-octahydro-naphthalene-1-carboxylic acid methyl ester 在
三乙基硼氢化锂 作用下,
以
四氢呋喃 为溶剂,
以93%的产率得到(1S,2S,4aR,5S,8aS)-2-[(E)-6-((5R,6R)-3,4-Dimethoxy-2-oxo-1-oxa-spiro[4.5]deca-3,8-dien-6-yl)-3-hydroxymethyl-hex-5-enyl]-5-methoxymethoxy-1-methyl-1,2,4a,5,6,7,8,8a-octahydro-naphthalene-1-carboxylic acid methyl ester