(S)-2-((2S,3R)-2-Amino-3-hydroxy-butyrylamino)-3-hydroxy-propionic acid allyl ester; hydrochloride 、
N-<2-(acetylamino)-2-deoxy-3,4,6-triacetyl-β-D-glucopyranosyl>-N2-<(1,1-dimethylethoxy)carbonyl>-L-asparagine 在
2-乙氧基-1-乙氧碳酰基-1,2-二氢喹啉 、
三乙胺 作用下,
以
二氯甲烷 为溶剂,
以86%的产率得到N
4-(2-Acetamido-3,4,6-tri-O-acetyl-2-deoxy-β-D-glucopyranosyl)-N
2-(tert-butoxycarbonyl)-L-asparaginyl-L-threonyl-L-serine allyl ester