5-{[(2S,2'R,5S,5'S)-5'-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-2,5'-dimethyloctahydro-2,2'-bifuran-5-yl]methylsulfonyl}-1-phenyl-1H-tetrazole 、
(2R,3R,4R)-5-(tert-butyldiphenylsilyloxy)-3-(4-methoxybenzyloxy)-2,4-dimethylpentanal 在
lithium hexamethyldisilazane 作用下,
以
四氢呋喃 、
甲苯 为溶剂,
生成 (2R,3S,4S)-6-((2S,2'R,5S,5'S)-5'-((R)-1-((tert-butyldimethylsilyl)oxy)ethyl)-2,5'-dimethyloctahydro-[2,2'-bifuran]-5-yl)-1-((tert-butyldiphenylsilyl)oxy)-2,4-dimethylhex-5-en-3-ol 、
(2S,2'R,5'S)-5'-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-5-[(3S,4S,5R,Z)-6-(tert-butyldiphenylsilyloxy)-4-(4-methoxybenzyloxy)-3,5-dimethylhex-1-enyl]-2,5'-dimethyloctahydro-2,2'-bifuran