Methanesulfonic acid (2R,3S,4R,5R)-2,3,4,6-tetrakis-benzyloxy-1-((2S,3R,4S,5R,6S)-4,5-bis-benzyloxy-2-benzyloxymethyl-6-methoxy-tetrahydro-pyran-3-ylmethyl)-5-hydroxy-hexyl ester 在
potassium tert-butylate 作用下,
以
苯 为溶剂,
反应 2.0h,
以70%的产率得到(2S,3R,4S,5R,6S)-3,4-Bis-benzyloxy-6-benzyloxymethyl-2-methoxy-5-[2-((3S,4R,5R)-2,3,4-tris-benzyloxy-5-benzyloxymethyl-tetrahydro-furan-2-yl)-ethyl]-tetrahydro-pyran