(2R,3S,4R,5R,6R)-3-((2R,3R,4R,5S,6R)-3-Amino-4,5-bis-benzyloxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy)-4-benzyloxy-6-[5-(2-benzyloxycarbonylamino-ethanesulfonyl)-pentyloxy]-5-hydroxy-tetrahydro-pyran-2-carboxylic acid 在
pyridine-SO3 complex 作用下,
以
吡啶 为溶剂,
反应 4.0h,
生成 (2R,3S,4S,5R,6R)-4-Benzyloxy-6-[5-(2-benzyloxycarbonylamino-ethanesulfonyl)-pentyloxy]-3-((2R,3R,4R,5S,6R)-4,5-bis-benzyloxy-3-sulfoamino-6-sulfooxymethyl-tetrahydro-pyran-2-yloxy)-5-sulfooxy-tetrahydro-pyran-2-carboxylic acid