反应详情

103 mg of ethyl (RS)-3-[[1-(2-guanidino-4-methyl-thiazole-5-carbonyl)-piperidine-3-carbonyl]-amino]-propionate are left to stand at RT in 2.1 ml of 25 percent hydrochloric acid for 6 hrs. The solution is evaporated and the residue is taken up in water and again evaporated. There are obtained 92 mg of (RS)-3-[[1-(2-guanidino-4-methyl-thiazole-5-carbonyl)-piperidine-3-carbonyl]-amino]-propionic acid hydrochloride (1:2) as a white foam, MS: 383 (M+H)+.

1. customThe solution is evaporated
2. customagain evaporated