rac-8'α-<<(tert-Butyl)dimethylsilyl>oxy>-4,4'aα,5,5',6',7',8',8'a-octahydro-2',5β,5',5',8'aβ-pentamethyl-4'-oxospiro
,1'(4'H)-naphthalin>-5-acetaldehyd 在
sodium tetrahydroborate 作用下,
以
异丙醇 为溶剂,
反应 1.0h,
以85%的产率得到rac-8'α-<<(tert-Butyl)dimethylsilyl>oxy>-4,4'aβ,5α,5',6',7',8',8'a-octahydro-5β-(2-hydroxyfuran)2',5,5',5',8'aβ-pentamethylspiro,1'(4'H)-naphthalin>-2'-on