Steroidal saponins from the aerial parts of Tribulus pentandrus Forssk

被引：27

作者：

Hamed, AI

Oleszek, W

Stochmal, A

Pizza, C

Piacente, S

机构：

[1] Univ Salerno, Dipartimento Sci Farmaceut, I-84084 Salerno, Italy

[2] S Valley Univ, Fac Sci, Dept Bot, Aswan, Egypt

[3] Inst Plant Cultivat & Environm Sci, Dept Biochem, PL-24100 Pulawy, Poland

来源：

PHYTOCHEMISTRY | 2004年 / 65卷 / 21期

关键词：

Tribulus pentandrus; Zygophyllaceae; cholestane glycosides; furostan glycoside; pregnane glycoside; pentandrosides A-G;

D O I：

10.1016/j.phytochem.2004.07.003

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Seven new steroidal glycosides named pentandrosides A(1)-G(7) were isolated from the EtOH extract of the aerial parts of Tribulus pentandrus. Pentandrosides';A(1)-E(5) possess cholestane aglycones, pentandroside F(6) a furostan-type aglycone and pentandroside G(7) an unusual acyloxypregnane aglycone probably derived from the degradation of 4 furostan skeleton. Structure elucidation of 1-7 was accomplished through the extensive use of 1D- and 2D NMR experiments including H-1-H-1 (DQF-COSY, 1D-TOCSY) and H-1-C-13 (HSQC, HMBQ spectroscopy along with ESIMS and HRESIMS. (C) 2004 Elsevier:Ltd. All rights reserved.

引用

页码：2935 / 2945

页数：11

共 30 条

[1] Cholestane- and pregnane-type glycosides from the roots of Tribulus cistoides [J].