{[4-(4'-Amino-2'-methyl-biphenyl-3-sulfonyl)-5-methylsulfanyl-thiophen-2-yl]-imino-methyl}-carbamic acid tert-butyl ester 、
4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran 在
溶剂黄146 、
三乙胺 、
三氟乙酸 作用下,
以
甲醇 、
乙腈 为溶剂,
以49%的产率得到4-[4'-(N'-Acetyl-guanidino)-2'-methyl-biphenyl-3-sulfonyl]-5-methylsulfanyl-thiophene-2-carboxamidine trifluoroacetate