9-(1-tert-Butylsulfanyl-vinyloxy)-9-bora-bicyclo[3.3.1]nonane 、
(S)-2-{(2R,3S,5S)-3-[2-(tert-Butyl-diphenyl-silanyloxy)-ethyl]-5-methyl-6-oxo-tetrahydro-pyran-2-yl}-propionaldehyde 生成 (3R,4R)-4-{(2R,3S,5S)-3-[2-(tert-Butyl-diphenyl-silanyloxy)-ethyl]-5-methyl-6-oxo-tetrahydro-pyran-2-yl}-3-hydroxy-pentanethioic acid S-tert-butyl ester 、 (3S,4R)-4-{(2R,3S,5S)-3-[2-(tert-Butyl-diphenyl-silanyloxy)-ethyl]-5-methyl-6-oxo-tetrahydro-pyran-2-yl}-3-hydroxy-pentanethioic acid S-tert-butyl ester