{2-[3-Cyclopentylmethyl-3-(3-methylcarbamoyl-phenyl)-ureido]-thiazol-5-ylsulfanyl}-propionic acid ethyl ester 、 {2-[3-cyclopentylmethyl-3-(4-methanesulfonyl-phenyl)-ureido]-thiazol-4-yl}-acetic acid 、
3-[(Cyclopentylmethyl)amino]-N-methylbenzamide 、 ethyl 2-((2-aminothiazol-5-yl)thio)propanoate 生成 3-{2-[3-Cyclopentyl methyl-3-(3-methylcarbamoyl-phenyl)-ureido]-thiazol-5-ylsulfanyl}-propionic acid