摘要
本文采用FAB-MS,FTIR和NMR等技术对从沙打旺牧草分离出的一种新的三萜化合物进行结构鉴定,结果表明该化合物为(20R,24S)-3,16-二羰基-6α,25-二羟基-20,24-环氧-9,10环羊毛甾酮.用2D NMR技术,包括~1H-^(13)CHETCOR,COLOC,~1H-~1H COSY对,~1H和^(13)C NMR进行归属。
The structural analysis of compound (1) was carried out using NMR. Several methods ,including 1H-1H two-dimensional shift correlation spectroscopy, 13C-1H two-dimensional shift correlation spectroscopy, COLOC (Correlation spectroscopy via LOng rang Coupling) and DEPT were used for chemical assignment. This investigation demonstrates the power of two - dimensional NMR techniques in the structural determination of natural products.
出处
《波谱学杂志》
CAS
CSCD
1992年第2期131-140,共10页
Chinese Journal of Magnetic Resonance
关键词
三萜化合物
化学位移
NMR
Tritcrpene
Chemical shift
Assignment
2D NMR
