2,2,2-Trichloro-acetimidic acid (3R,4S,6R)-5-[(E)-benzyloxyimino]-3-{(2S,4S,5S)-5-[ethyl-(9H-fluoren-9-ylmethoxycarbonyl)-amino]-4-methoxy-tetrahydro-pyran-2-yloxy}-6-methyl-4-triethylsilanyloxy-tetrahydro-pyran-2-yl ester 、
苯甲醇 在
三氟化硼乙醚 作用下,
以
二氯甲烷 为溶剂,
以16%的产率得到((3S,4S,6S)-6-{(2S,3R,4S,6R)-2-Benzyloxy-5-[(E)-benzyloxyimino]-6-methyl-4-triethylsilanyloxy-tetrahydro-pyran-3-yloxy}-4-methoxy-tetrahydro-pyran-3-yl)-ethyl-carbamic acid 9H-fluoren-9-ylmethyl ester