反应详情

A mixture of N-(1-benzyloxycarbonyloxy-3,3-dimethylbut-2(R)-yl)-3(R)-[3-[4-(pyridin-4-yl)phenyl]-1H-pyrrol-1-yl]succinamic acid benzyl ester (140 mg, 0.212 mmol) and Pd(OH)2 (60 mg of 20% Pd by content) in MeOH (1mL) and EtOAc (9 mL) was stirred under H2 atmosphere for 3 hours. The catalyst was filtered onto Celite and rinsed with 10% MeOH/CHCl3 (75 mL). The filtrate was concentrated in vacuo to provide a yellow solid, which was precipitated from hot CHCl3 solution with hexane to furnish 68 mg (95%) of N-[2,2-dimethyl-1(S)-(hydroxymethyl)propyl]-3(R)-[3-[4-(pyridin-4-yl)phenyl]-1H-pyrrol-1-yl]succinamic acid as a yellow solid, mp 192-4° C.

1. filtrationThe catalyst was filtered onto Celite
2. washrinsed with 10% MeOH/CHCl3 (75 mL)
3. concentrationThe filtrate was concentrated in vacuo
4. customto provide a yellow solid, which
5. customwas precipitated from hot CHCl3 solution with hexane