Benzoic acid (2S,3R,4R,5S,6S)-4-[(2S,3R,4R,5S,6S)-3-((2S,3R,4R,5S,6S)-3-acetoxy-4,5-bis-benzyloxy-6-methyl-tetrahydro-pyran-2-yloxy)-4,5-bis-benzyloxy-6-methyl-tetrahydro-pyran-2-yloxy]-5-benzyloxy-2-bromo-6-methyl-tetrahydro-pyran-3-yl ester 、
allyl 2-O-(2-O-(4,6-di-O-benzylidene-2-deoxy-2-phthalimido-β-D-glucopyranosyl)-3,4-di-O-benzyl-α-L-rhamnopyranosyl)-3,4-di-O-benzyl-α-L-rhamnopyranoside 在
4 A molecular sieve 、
氰化汞 作用下,
以
二氯甲烷 为溶剂,
以85%的产率得到allyl 2-O-(2-O-(3-O-(3-O-(2-O-(2-O-acetyl-3,4-di-O-benzyl-α-L-rhamnopyranosyl)-3,4-di-O-benzyl-α-L-rhamnopyranosyl)-2-O-benzoyl-4-O-benzyl-α-L-rhamnopyranosyl)-4,6-O-benzylidene-2-deoxy-2-phthalimido-β-D-glucopyranosyl)-3,4-di-O-benzyl-α-L-rhamn...