Glycolic Acid → HCID 13344954, compound

Reaction equation

[CH2:1]([N:8]1[CH2:13][CH2:12][N:11]([CH2:14][C:15]2[CH:20]=[CH:19][C:18]([N:21]([CH2:28]OC(=O)C(C)(C)C)[C:22]3[N:27]=[CH:26][CH:25]=[CH:24][N:23]=3)=[CH:17][CH:16]=2)[C:10](=[O:36])[C:9]1=[O:37])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:38]([OH:42])(=[O:41])[CH2:39][OH:40].Cl.C(O)C>C(OCC)(=O)C>[CH2:1]([N:8]1[CH2:13][CH2:12][N:11]([CH2:14][C:15]2[CH:20]=[CH:19][C:18]([N:21]([CH2:28][O:40][CH2:39][C:38]([OH:42])=[O:41])[C:22]3[N:23]=[CH:24][CH:25]=[CH:26][N:27]=3)=[CH:17][CH:16]=2)[C:10](=[O:36])[C:9]1=[O:37])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

Procedure

In 30 ml of ethyl acetate was dissolved 1 g of 1-benzyl-4-{4-[N-pivaloyloxymethyl-N-(2-pyrimidinyl)-amino]benzyl}-2,3-dioxopiperazine, and 1 g of glycolic acid and 0.02 ml of N hydrogen chloride-ethanol solution were added, after which the resulting mixture was subjected to reaction at room temperature for 3 hours with stirring. After the completion of the reaction, the solvent was removed by distillation under reduced pressure, and the residue thus obtained was extracted with 100 ml of methylene chloride. The methylene chloride layer was washed with 30 ml of water and then 30 ml of saturated aqueous sodium chloride solution, and dried over anhydrous magnesium sulfate, after which the solvent was removed by distillation under reduced pressure. The residue thus obtained was purified by a column chromatography (Wakogel C-200, eluted with chloroformethanol), and recrystallized from ethyl acetate-diisopropyl ether, to obtain 0.5 g (52.8% yield) of 1-benzyl-4-{4-[N-carboxymethoxymethyl-N-(2-pyrimidinyl)amino]benzyl}-2,3-dioxopiperazine having a melting point of 85° to 90° C.