A 2-DIMENSIONAL NMR STRATEGY FOR THE COMPLETE H-1 CHEMICAL-SHIFT ASSIGNMENT OF EXTENDED PROTON SPIN SYSTEMS IN TRITERPENOIDS

被引：11

作者：

LOGANATHAN, D

TRIVEDI, GK

CHARY, KVR

机构：

[1] INDIAN INST TECHNOL,DEPT CHEM,BOMBAY 400076,INDIA

[2] TATA INST FUNDAMENTAL RES,CHEM PHYS GRP,BOMBAY 400005,INDIA

来源：

MAGNETIC RESONANCE IN CHEMISTRY | 1990年 / 28卷 / 11期

关键词：

2D NMR ([!sup]1[!/sup]H‐[!sup]13[!/sup]C HETCOR; COSY; NOESY); Complete [!sup]1[!/sup]H and [!sup]13[!/sup]C chemical shift assignment; LSR; Triterpenoid;

D O I：

10.1002/mrc.1260281104

中图分类号：

O6 [化学];

学科分类号：

0703 [化学];

摘要：

An assignment strategy that utilizes one‐dimensional lanthanide‐induced methyl proton shifts, reported 13C NMR data of model compounds and two‐dimensional 1H and 13C shift correlated spectroscopy, homonuclear proton chemical shift correlated spectroscopy and nuclear Overhauser enhancement spectroscopy methods was demonstrated to be effective for the complete 1H chemical shift assignments of extended proton spin‐systems in a triterpenoid viz., 3‐keto‐urs‐12‐en‐24‐oic acid methyl ester. Complete 13C chemical shift assignments have also been accomplished. Copyright © 1990 John Wiley & Sons, Ltd.

引用

页码：925 / 930

页数：6

共 20 条

[1]

SENSITIVITY-ENHANCED TWO-DIMENSIONAL HETERONUCLEAR SHIFT CORRELATION NMR-SPECTROSCOPY [J].