(2S)-benzyloxy-[(4S)-2,2-dimethyl-[1,3]dioxolan-4-yl]-acetaldehyde 、
S-phenyl 5-methylhex-4-enethioate 在
二异丙胺 、 B-(trifluoromethanesulfonyloxy)-9-borabicyclo[3.3.1]nonane 作用下,
以
乙醚 为溶剂,
以79%的产率得到(2R)-S-phenyl 2-((1R,2R)-2-(benzyloxy)-2-(2,2-dimethyl-1,3-dioxolan-4-yl)-1-hydroxyethyl)-5-methylhex-4-enethioate