Dergiler / IUFS Journal of Biology / 2010 / Cilt: 69 - Sayı: 2

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

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

Gehan FAWZY, Antje HUEFNER, El Sayed A. Abu TABL, Ataa SAID

Sayfa
77–85
DOI
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Abstract

n 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-$^ {13}C$-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.