(1SR,2SR,8SR,8aRS,2'SR,6'RS)-6-<2-(8-acetoxy-1,2,6,7,8,8a-hexahydro-2-methyl-1-naphthalenyl)ethyl>-2-ethoxytetrahydro-4H-pyran-4-one 在
L-Selectride 作用下,
以
四氢呋喃 为溶剂,
反应 4.0h,
以56%的产率得到(1SR,2SR,8SR,8aRS,2'SR,4'RS,6'RS)-6<2-(8-acetoxy-1,2,6,7,8,8a-hexahydro-2-methyl-1-naphthalenyl)ethyl>-2-ethoxytetrahydro-4-hydroxy-2H-pyran