HCID 58671549、化合物 → HCID 58671541、化合物
反応式
[CH2:1]([O:8][C:9]([NH:11][CH:12]([CH2:17][C:18]1[C:23]([NH:24][C:25]([O:27]C(C)(C)C)=O)=[CH:22][N:21]=[C:20]([C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)[CH:19]=1)C(OC)=O)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1>C(O)(C(F)(F)F)=O.C(Cl)Cl>[O:27]=[C:25]1[CH:12]([NH:11][C:9](=[O:10])[O:8][CH2:1][C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)[CH2:17][C:18]2[C:23](=[CH:22][N:21]=[C:20]([C:32]3[CH:33]=[CH:34][CH:35]=[CH:36][CH:37]=3)[CH:19]=2)[NH:24]1参加物
4
実験手順
A solution of 3E (980 mg, 1.94 mmol) in TFA (2 mL) and CH2Cl2 (2 mL) was stirred at RT for 2 h. After this time, no starting material was detected by LC-MS. The reaction was concentrated under reduced pressure. The resulting residue was diluted with EtOAc (30 mL) and washed with saturated aqueous NaHCO3. The aqueous layer was extracted with EtOAc (30 mL×3). The combined organic layers were washed with saturated NaCl, dried over Na2SO4, filtered and concentrated. The resulting residue was purified by silica gel (40 g) column chromatography eluting with a gradient of EtOAc (30-100%) in hexane to give the title compound as a white solid (470 mg, 65%). LC/MS (method A): retention time=2.72 min, (M+H)+=374.