S-[(2R,3R,4S,6S)-6-[(E)-[(2R,4S,5R,6R)-5-[(2S,4S,5S)-5-[ethyl(9H-fluoren-9-ylmethoxycarbonyl)amino]-4-methoxyoxan-2-yl]oxy-2-methyl-6-(2,2,2-trichloroethanimidoyl)oxy-4-triethylsilyloxyoxan-3-ylidene]amino]oxy-2-methyl-4-triethylsilyloxyoxan-3-yl] 5-iodo-2,3-dimethoxy-4-[(2S,3R,4R,5S,6S)-4-methoxy-6-methyl-3,5-bis(triethylsilyloxy)oxan-2-yl]oxy-6-methylbenzenecarbothioate 、
(2E)-2-{(1R,4Z,8S)-8-hydroxy-10-[(methoxycarbonyl)amino]-1-[(triethylsilyl)oxy]-13H-spiro[bicyclo[7.3.1]trideca-4,9-diene-2,6-diyne-11,2'-[1,3]dioxolan]-13-ylidene}ethyl benzoate 在
三氟化硼乙醚 作用下,
以
二氯甲烷 为溶剂,
反应 1.75h,
以76%的产率得到