erythro-Nα-((tert-butyloxy)carbonyl)-Nim-(triphenylmethyl)-β-(3,4,6-tri-O-acetyl-2-O-methyl-α-L-gulopyranosyl)-L-histidine methyl ester 在
lithium hydroxide 作用下,
以
甲醇 为溶剂,
反应 2.5h,
以62%的产率得到erythro-Nα-((tert-butyloxy)carbonyl)-Nim-(triphenylmethyl)-β-(2-O-methyl-α-L-gulopyranosyl)-L-histidine