Piperidine → 2-(2-Amino-4-methyl-pentanoylamino)-3-(4-benzyloxy-phenyl)-propionic acid tert-butyl ester
反応式
[C:1]([O:5][C:6](=[O:46])[CH:7]([NH:23][C:24](=[O:45])[CH:25]([NH:30]CC1C2C=CC=CC=2C2C1=CC=CC=2)[CH2:26][CH:27]([CH3:29])[CH3:28])[CH2:8][C:9]1[CH:14]=[CH:13][C:12]([O:15][CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)=[CH:11][CH:10]=1)([CH3:4])([CH3:3])[CH3:2].N1CCCCC1>O1CCCC1>[C:1]([O:5][C:6](=[O:46])[CH:7]([NH:23][C:24](=[O:45])[CH:25]([NH2:30])[CH2:26][CH:27]([CH3:28])[CH3:29])[CH2:8][C:9]1[CH:14]=[CH:13][C:12]([O:15][CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)=[CH:11][CH:10]=1)([CH3:2])([CH3:4])[CH3:3]参加物
4
反応物 2
生成物 1
試薬・触媒・溶媒 1
実験手順
A solution of the product from Example AH (3-(4-benzyloxy-phenyl)-2-{2-[(9H-fluoren-9-ylmethyl)-amino]-4-methyl-pentanoylamino}-propionic acid tert-butyl ester) (12.2 g, 20.0 mmol) in 500 mL of tetrahydrofuran was treated with piperidine (80 mL). The resulting solution was stirred at room temperature for 48 hours. The reaction mixture was concentrated and the residue purified by chromatography (silica gel, gradient elution EtOAc—15% EtOH/EtOAc). The resulting yellow solid was broken up in heptane to give the title compound as a white solid (6.77 g, 77%), mp=56-60° C.