(1S)-2,3,4,6-tetra-O-methoxymethyl-1'-N-benzyloxycarbonyl-5'(S)-methyl methoxymethyl ether-spiro[1,5-anhydro-D-glucitol-1,3'-L-proline methyl ester] 在
lithium hydroxide 作用下,
以
1,4-二氧六环 、
水 为溶剂,
反应 48.0h,
以53%的产率得到(1S)-2,3,4,6-tetra-O-methoxymethyl-1'-N-benzyloxycarbonyl-5'(S)-methyl methoxymethyl ether-spiro[1,5-anhydro-D-glucitol-1,3'-L-proline]