氯乙酰异氰酸酯 、
[(5S,6R,7R,8R)-6-hydroxy-7-methoxy-2-oxo-6-(5-phenylpentyl)-1,3,10-trioxaspiro[4.5]decan-8-yl] N-(2-chloroacetyl)carbamate 以
二氯甲烷 为溶剂,
以83%的产率得到[(5S,6R,7R,8R)-6-[(2-chloroacetyl)carbamoyloxy]-7-methoxy-2-oxo-6-(5-phenylpentyl)-1,3,10-trioxaspiro[4.5]decan-8-yl] N-(2-chloroacetyl)carbamate