6(R)-<2-<8(S)-hydroxy-2(S),6(S)-dimethyl-1,2,3,4,4a(R),5,6,7,8,8a(S)-decahydronaphth-1(S)-yl>ethyl>-4(R)-(tert-butyldimethylsiloxy)-3,4,5,6-tetrahydro-2H-pyran-2-one 以
(6R)-[2-[8(S)-Hydroxy-2(S),6(R)-dimethyl-1,2,3,4,6,7,8,8a(R)-octahydronaphthyl-1(S)]ethyl]-4(R)-tert-butyldimethylsilyloxy)-3,4,5,6-tetrahydro-2H-pyran-2-one 为溶剂,
生成
6(R)-[2-[8(S)-(2,2-dimethylbutyryloxy)-6 (R)-hydroxymethyl-2(S)-methyl-1,2,3,4,6,7,8,8a(R)-octahydronaphthyl-1(S)]ethyl]-4(R)-hydroxy-3,4,5,6-tetrahydro-2H-pyran-2-one