反应详情

According to the procedure described in Example 1(b) for the preparation of N-(2,2-dimethyl-1(S)-methylcarbamoylpropyl)-3(R)-(3-phenyl-1H-pyrrol-1-yl)succinamic acid benzyl ester, 3(R)-t-butoxycarbonylamino-N-[2,2-dimethyl-1(S)-(pyridin-4-yl)carbamoylpropyl]succinamic acid benzyl ester was deprotected. The crude amine salt and crude 3-(4′-carboxamidobiphenyl-4-yl)-2,5-dimethoxy-tetrahydrofuran (prepared as described in Example 4(b)) were condensed in wet 1,2-dichloroethane at 90-100° C. to yield 130 mg (36%) of 3(R)-[3-(4′-carbamoylbiphenyl-4-yl)-1H-pyrrol-1-yl]-N-[2,2-dimethyl-1(S)-(N-(pyridin-4-yl)carbamoyl)propyl]succinamic acid benzyl ester.