Diphenylphosphinic chloride → BocPro-MeDTrpOMe

反応式

[N:1]1([C:9]([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[O:10])[CH2:8][CH2:7][CH2:6][C@H:2]1[C:3]([OH:5])=O.[NH:16]([CH3:32])[C@@H:17]([C:28]([O:30][CH3:31])=[O:29])[CH2:18][C:19]1[C:27]2[C:22](=[CH:23][CH:24]=[CH:25][CH:26]=2)[NH:21][CH:20]=1.C1(P(Cl)(C2C=CC=CC=2)=O)C=CC=CC=1>>[N:1]1([C:9]([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[O:10])[CH2:8][CH2:7][CH2:6][C@H:2]1[C:3]([N:16]([CH3:32])[C@@H:17]([C:28]([O:30][CH3:31])=[O:29])[CH2:18][C:19]1[C:27]2[C:22](=[CH:23][CH:24]=[CH:25][CH:26]=2)[NH:21][CH:20]=1)=[O:5]

参加物

反応物 3

HCID 73910Diphenylphosphinic chloride

HCID 850831,2-Pyrrolidinedicarboxylic acid, 1-(1,1-dimethylethyl) ester, (2S)-

HCID 12787320N-Methyl-D-tryptophan Methyl Ester

生成物 1

HCID 131713818BocPro-MeDTrpOMe収率 69%

実験手順

Condensation of BocProOH (4.63 g.) and MeDTrpOMe (5.00 g.) by the mixed anhydride method using diphenylphosphinyl chloride gave BocPro-MeDTrpOMe in 69% yield. Demethylation of BocPro-MeDTrpOMe (6.33 g.) using aqueous sodium hydroxide gave BocPro-MeDTrpOH in 77% yield. Condensation of BocPro-MeDTrpOH (3.60 g.) and HPheOBz (3.70 g.) using dicyclohexylcarbodiimide and N-hydroxysuccinimide gave BocPro-MeDTrp-PheOBz in 83% yield. Debenzylation of BocPro-MeDTrp-PheOBz (4.60 g.) by hydrogenation with palladium catalyst gave BocPro-MeDTrp-PheOH in 100% yield.