N-acetyl-L-cysteinyl-L-serine methyl ester 、
ethyl 2,3,6-tri-O-acetyl-4-O-(2,3,6-tri-O-acetyl-4-O-(2,3,4,6-tetra-O-acetyl-α-O-glucopyranosyl)-α-D-glucopyranosyl)-β-D-glucopyranosyl disulfide 在
三乙胺 作用下,
以
甲醇 、
二氯甲烷 为溶剂,
反应 6.0h,
以74%的产率得到N-butoxycarbonyl-L-cysteine (2,3,6-tri-O-acetyl-4-O-(2,3,6-tri-O-acetyl-4-O-(2,3,4,6-tetra-O-acetyl-α-O-glucopyranosyl)-α-D-glucopyranosyl)-β-D-glucopyranosyl disulfide)-L-serine methyl ester