1H and13C NMR assignments and conformational analysis of some podocarpene derivatives
作者:Manuel Arnó、Miguel A. González、M. Luisa Marín、Ramón J. Zaragozá
DOI:10.1002/1097-458x(200012)38:12<1019::aid-mrc781>3.0.co;2-f
日期:2000.12
assignment of the 1H and 13C NMR spectra of five podocarpene derivatives. Resonance assignments were made on the basis of one‐ and two‐dimensional NMR techniques which included 1H, 13C, DEPT and HMQC and also 1D NOE difference spectroscopy. The ratio of the different conformers in the six‐membered C‐ring of the podocarpene system was determined by molecular mechanics calculations and analysis of proton spin–spin
本文报告了五种罗汉果衍生物的 1H 和 13C NMR 光谱的归属。共振分配是基于一维和二维 NMR 技术进行的,包括 1H、13C、DEPT 和 HMQC 以及一维 NOE 差分光谱。通过分子力学计算和质子自旋-自旋耦合常数分析,确定了罗汉果系统六元 C 环中不同构象异构体的比例。版权所有 © 2000 John Wiley & Sons, Ltd.