(3S,4R)-1-(tert-butyl-dimethyl-silanyl)-5-(4-methoxy-benzyloxy)-4-methyl-pent-1-yn-3-ol 、
(2R,3S,4R,5S,6S)-3,4-bis-(tert-butyl-dimethyl-silanyloxy)-5-methoxy-6-methyl-2-phenylsulfanyl-tetrahydro-pyran 在
N-碘代丁二酰亚胺 、 4 A molecular sieve 作用下,
以
甲苯 为溶剂,
反应 1.0h,
以92%的产率得到(2R,3S,4R,5S,6S)-2-{(S)-3-(tert-butyl-dimethyl-silanyl)-1-[(R)-2-(4-methoxy-benzyloxy)-1-methyl-ethyl]-prop-2-ynyloxy}-3,4-bis-(tert-butyl-dimethyl-silanyloxy)-5-methoxy-6-methyl-tetrahydro-pyran