反应详情

A solution of 3-(t-butoxycarbonyl)-N-[m-[p-[1-(methylthio)formimidoyl]benzamido]benzoyl]-L-alanine methyl ester hydroiodide in methanol is reacted with ammonium acetate in an analogous manner to that described in Example 33 B) h). There is obtained in 71% yield N-[m-(p-amidinobenzamido)benzoyl]-3-(t-butoxycarbonyl)-L-alanine methyl ester hydroiodide in the form of a colourless solid, m.p. 118°-120° C. (ether/isopropyl ether), MS: 469 (M+1)+.