Trifluoroacetic acid → HCID 57708990、化合物
反応式
FC(F)(F)C(O)=O.[CH3:8][O:9][C:10](=[O:60])[C@H:11]([NH:52]C(OC(C)(C)C)=O)[C:12]1[CH:17]=[CH:16][C:15]([C:18]2[CH:23]=[CH:22][C:21]([C:24]([C:29]3[CH:34]=[CH:33][C:32]([CH2:35][CH2:36][CH:37]([O:42][Si](C(C)(C)C)(C)C)[C:38]([CH3:41])([CH3:40])[CH3:39])=[C:31]([CH3:50])[CH:30]=3)([CH2:27][CH3:28])[CH2:25][CH3:26])=[CH:20][C:19]=2[CH3:51])=[CH:14][CH:13]=1>ClCCl>[CH3:8][O:9][C:10](=[O:60])[C@H:11]([NH2:52])[C:12]1[CH:13]=[CH:14][C:15]([C:18]2[CH:23]=[CH:22][C:21]([C:24]([CH2:25][CH3:26])([C:29]3[CH:34]=[CH:33][C:32]([CH2:35][CH2:36][CH:37]([OH:42])[C:38]([CH3:39])([CH3:40])[CH3:41])=[C:31]([CH3:50])[CH:30]=3)[CH2:27][CH3:28])=[CH:20][C:19]=2[CH3:51])=[CH:16][CH:17]=1参加物
4
実験手順
Trifluoroacetic acid (0.3 mL) was added to a solution of (R)-t-butoxycarbonylamino-[4′-(1-{4-[3-(t-butyldimethyl-silanyloxy)-4,4-dimethyl-pentyl]-3-methyl-phenyl}-1-ethyl-propyl)-2′-methyl-biphenyl-4-yl]-acetic acid methyl ester (Example 167-(2); 28.5 mg, 0.038 mmol) in dichloromethane (3 mL) at 0° C., and the mixture was stirred at room temperature for one hour. Then, the reaction mixture was concentrated under reduced pressure. The resulting residue was purified by silica gel chromatography (chloroform:methanol=10:1) to give the target compound as a colorless oil (16.6 mg, 83%).