New oleanane saponins in Chenopodium quinoa

被引：37

作者：

Dini, I

Tenore, GC

Schettino, O

Dini, A

机构：

[1] Univ Naples Federico II, Dipartimento Chim Sostanze Nat, I-80131 Naples, Italy

[2] Univ Naples Federico II, Dipartimento Chim Farmaceut & Tossicolog, I-80131 Naples, Italy

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2001年 / 49卷 / 08期

关键词：

Chenopodium quinoa; Chenopodiaceae; South American crop; food source; triterpene saponins; H-1 and C-13 NMR (HMBC; HMQC); FABMS;

D O I：

10.1021/jf010361d

中图分类号：

S [农业科学];

学科分类号：

09 [农学];

摘要：

Six triterpenoid saponins were isolated from the seeds of Chenopodium quinoa (Chenopodiaceae). Their structures were as follows: phytolaccagenic acid 3-O-[(alpha -L-arabinopyranosyl-(1 " -->3 ')-beta -D-glucuronopyranosyl]-28-O-beta -D-glucopyranoside (1); spergulagenic acid 3-O-[beta -D-glucopyranosyl-(1 -->2)-beta -D-glucopyranosyl-(1 -->3)-alpha -L-arabinopyranosyl-28-O-beta -D-glucopyranoside (2); hederagenin 3-O-[beta -D-glueopyranosyl-(1 -->3)-alpha -L-arabinopyranosyll-28-O-beta -D-glucopyranoside (3); phytolaccagenic acid 3-O-[beta -D-glueopyranosyl-(1 -->4)-beta -D-glucopyranosyl-(1 -->4)-beta -D-glucopyranosyl]-28-O-beta -D-glucopyranoside (4); hederagenin 3-O-[beta -D-glucopyranosyl-(1 -->4)-beta -D-glucopyranosyl-(1 -->4)-beta -D-glucopyranosyl]-28-O-beta -D-glucopyranoside (5); and spergulagenic acid 3-O-[alpha -L-arabinopyranosyl-(1 " --> -3 ")-beta -D-glucuronopyranosyl]-28-O-beta -D-glucopyranoside (6). Saponins 5 and 6 are new. The structures were characterized on the basis of hydrolysis and spectral evidence, including IR, UV, optical rotations, 1D- and 2D-NMR (HMQC and HMBC), ESIMS, and FABMS analyses.

引用

页码：3976 / 3981

页数：6

共 15 条

[1]

STRUCTURE ELUCIDATION OF THE ANTIBIOTIC DESERTOMYCIN THROUGH THE USE OF NEW TWO-DIMENSIONAL NMR TECHNIQUES [J].