关附庚素的选择性远程DEPT、一维COSY和一维接力COSY谱的研究

SELECTIVE LONG-RANGE DEFT, 1 D COSY AND 1 D RELAY COSY NMR STUDIES FOR GUAN-FU BASE G

由于谱峰拥挤和重迭、关附庚素的一部分~1H和^(13)C谱峰用一般核磁共振方法难于确定归属。本工作采用选择性远程DEPT、一维COSY和-维接力COSY等新技术作了研究,其~1H和^(13)C谱峰归属全部得到确定。结果有助于此类化合物的化学结构测定。

The ~1H and ^(13)C NMR spectra of guan-fu base G ( 1) were studied by selec-we long-range ^(13)C DEPT, 1 D COSY and 1 D relay COSY new techniques, otal assignment of ~1H and ^(13)C NMR spectra of the compound can be obtained. The results obtained showed that the techniques described in this paper are very ffective and convenient for the structure determination and oectral assignment of this class of compounds.