(E)-4-[(1R,5S,7R)-1-((2E,5Z)-(1R,4R)-6-Chloro-4,8-dihydroxy-1-methyl-octa-2,5-dienyl)-6-(2,2,2-trifluoro-acetyl)-6-aza-spiro[4.5]dec-7-yl]-2-methyl-but-2-enoic acid ethyl ester 在
sodium tetrahydroborate 作用下,
以
乙醇 为溶剂,
反应 18.0h,
以88%的产率得到(E)-4-[(1R,5S,7R)-1-((2E,5Z)-(1R,4R)-6-Chloro-4,8-dihydroxy-1-methyl-octa-2,5-dienyl)-6-aza-spiro[4.5]dec-7-yl]-2-methyl-but-2-enoic acid ethyl ester