ISOLATION AND C-13-NMR ASSIGNMENTS OF CUCURBITACINS FROM CAYAPONIA-ANGUSTILOBA, CAYAPONIA-RACEMOSA, AND GURANIA-SUBUMBELLATA

被引：42

作者：

JACOBS, H

SINGH, T

REYNOLDS, WF

MCLEAN, S

机构：

[1] UNIV TORONTO,DEPT CHEM,TORONTO M5S 1A1,ONTARIO,CANADA

[2] UNIV GUYANA,CTR NAT PROD CHEM,GEORGETOWN,GUYANA

来源：

JOURNAL OF NATURAL PRODUCTS | 1990年 / 53卷 / 06期

关键词：

D O I：

10.1021/np50072a037

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Cucurbitacins B, D, and F and dihydrocucurbitacins D and F have been identified as constituents of Cayaponia angustiloba, Cayaponia racemosa, and Gurania subumbellata; the two Cayaponia species also contain a glucoside of cucurbitacin B, arvenin I, not found in Gurania subumbellata. Two-dimensional nmr spectroscopy has been used to assign the H-1 and C-13 spectra of cucurbitacin B, and these assignments have been used as a benchmark to assign the spectra of the other compounds isolated.

引用

页码：1600 / 1605

页数：6

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