{[4-(2'-amino-4'-chloro-6'-methyl-biphenyl-3-sulfonyl)-5-methylsulfanyl-thiophen-2-yl]-imino-methyl}-carbamic acid tert-butyl ester 、
4-methanesulfonyl-butyryl chloride 在
三乙胺 作用下,
以
二氯甲烷 为溶剂,
以81%的产率得到({4-[4'-chloro-2'-(4-methanesulfonyl-butyrylamino)-6'-methyl-biphenyl-3-sulfonyl]-5-methylsulfanyl-thiophen-2-yl}-imino-methyl)-carbamic acid tert-butyl ester