- European Journal of Biology
- Vol: 69 Issue: 2
- Isolation and identification of Two new cyclic amino acids from the seeds of Zizyphus spina-christi ...
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
Authors : Ataa SAİD, Antje HUEFNER, El Sayed ABU TABLE, Gehan FAWZY
Pages : 77-85
View : 9 | Download : 2
Publication Date : 2010-11-02
Article Type : Research
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 1 H-NMR- 13 C-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