Acetic acid (2R,3R,4R,5R)-5-[2-((2R,3R,4R,5R)-5-acetoxymethyl-3,4-bis-benzyloxy-tetrahydro-furan-2-yl)-ethyl]-3,4-bis-benzyloxy-tetrahydro-furan-2-ylmethyl ester 在
吡啶 、
sodium methylate 作用下,
以
甲醇 为溶剂,
反应 22.0h,
生成
{(2R,3R,4R,5R)-3,4-Bis-benzyloxy-5-[2-((2R,3R,4R,5R)-3,4-bis-benzyloxy-5-trityloxymethyl-tetrahydro-furan-2-yl)-ethyl]-tetrahydro-furan-2-yl}-methanol