Isolation and identification of Two new cyclic amino acids from the seeds of Zizyphus spina-christi L. (Willd) by means of 1H-NMR-13C-NMR-HSQC-HMBC and GC-MS

Year 2010, Volume: 69 Issue: 2, 77 - 85, 02.11.2010

Ataa Said , Antje Huefner El Sayed Abu Table Gehan Fawzy

Abstract

In this study we isolate two new cyclic amino acids from the seeds of Zizyphus spina-christi L. (Willd ) 70% methanolic extract. The two compounds were identified by means of ¹H-NMR-¹³C-NMR-HSQC-HMBC and GC-MS as 4-hydroxymethyl-1-methyl pyrrolidine-2-carboxylic acid (less polar and major compound) and 4-hydroxy-4-hydroxymethyl-1-methyl pyrrolidine-2-carboxylic acid (more polar and minor compound) of the ratio 4:3.

Keywords

Amino acids, seeds, Zi::yplws spina-christ

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