3-((2R,3S)-3-{3-[(2S,3R)-3-(tert-Butyl-diphenyl-silanyloxy)-2-methyl-tetrahydro-pyran-2-yl]-thiopropionyloxy}-tetrahydro-pyran-2-yl)-2-methyl-thiopropionic acid O-(2-trimethylsilanyl-ethyl) ester 生成
(4aR,6S,8R,9aS)-6-[2-((2R,3S)-3-Hydroxy-2-methyl-tetrahydro-pyran-2-yl)-ethyl]-8-methyl-hexahydro-1,5-dioxa-benzocyclohepten-7-one