(1S,3R,5S,6S,7S,8S)-1-O-{(1'S,3'R,5'S,6'S,7'S,8'S)-1'-O-acetyl-6',7',8'-tri-O-benzyl-4'-oxaspiro[2.5]octan-5'-yl}-(5'→1)-6,7,8-tri-O-benzyl-5-O-methyl-4-oxaspiro[2.5]octan 在
水 、
potassium carbonate 作用下,
以
甲醇 为溶剂,
反应 1.0h,
以50%的产率得到(1S,3R,5S,6S,7S,8S)-1-O-{(1'S,3'R,5'S,6'S,7'S,8'S)-6',7',8'-tri-O-benzyl-4'-oxaspiro[2.5]octan-1'-ol-5'-yl}-(5'→1)-6,7,8-tri-O-benzyl-5-O-methyl-4-oxaspiro[2.5]octane