Benzoic acid (1R,3R,5S,6S,7R,8R,15S,16R,17R,19R)-7-benzyloxy-17-(5-benzyloxycarbonylamino-pentyloxy)-19-benzyloxymethyl-6-hydroxy-5-methyl-10,13-dioxo-2,4,9,14,18-pentaoxa-tricyclo[13.4.0.03,8]nonadec-16-yl ester 、 (2S,4aR,6S,7R,8R,8aS)-7-Acetylamino-8-benzoyloxy-6-[(2R,3S,4S,5R)-3,5-bis-benzyloxy-2-benzyloxymethyl-6-(2,2,2-trichloro-acetimidoyloxy)-tetrahydro-pyran-4-yloxy]-2-methyl-hexahydro-pyrano[3,2-d][1,3]dioxine-2-carboxylic acid methyl ester 在
三氟甲磺酸三甲基硅酯 、 3 A molecular sieve 作用下,
以
乙醚 、
二氯甲烷 为溶剂,
反应 3.0h,
生成 (5-Benzyloxycarbonylamino)pentyl O-{2-acetamido-3-O-benzoyl-2-deoxy-4,6-O-[(S)-1-(methoxycarbonyl)ethylidene]-β-D-glucopyranosyl}-(1->3)-(2,4,6-tri-O-benzyl-α-D-galactopyranosyl)-(1->4)-(3-O-benzyl-β-L-rhamnopyranosyl)-(1->4)-2-O-benzoyl-6-O-benzy...