对来自中国红树植物木果楝果实中的两种3β,8β-环氧墨西哥内酯的（1）H和（13）C核磁共振数据进行完整归属。

Complete assignments of (1)H and (13)C NMR data for two 3beta,8beta-epoxymexicanolides from the fruit of a Chinese mangrove Xylocarpus granatum.

作者信息

Wu Jun, Xiao Zhihui, Song Yang, Zhang Si, Xiao Qiang, Ma Cha, Ding Haixin, Li Qingxin

机构信息

Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, P. R. China.

出版信息

Magn Reson Chem. 2006 Jan;44(1):87-9. doi: 10.1002/mrc.1713.

DOI:10.1002/mrc.1713

PMID:16261504

Abstract

Three 3beta,8beta-epoxymexicanolides, including xyloccensin K, 6-acetoxycedrodorin and a new one named xyloccensin W, were isolated from the fruit of a Chinese mangrove Xylocarpus granatum. Their structures were determined by spectroscopic analyses. The first complete assignment of (1)H and (13)C NMR data for xyloccensin W was achieved by means of 2D NMR techniques, including (1)H-(1)H COSY, HSQC, HMBC and NOESY spectra. In addition, the confusion of (1)H and (13)C NMR data previously reported for xyloccensin K was clarified.

摘要

从中国红树植物木果楝（Xylocarpus granatum）的果实中分离出三种3β,8β-环氧墨西哥内酯，包括木果楝素K、6-乙酰氧基雪松素和一种新的化合物木果楝素W。通过光谱分析确定了它们的结构。借助二维核磁共振技术，包括氢-氢化学位移相关谱（1H-1H COSY）、异核单量子相干谱（HSQC）、异核多键相关谱（HMBC）和核Overhauser效应谱（NOESY），首次完成了木果楝素W的氢谱（1H）和碳谱（13C）核磁共振数据的全归属。此外，还澄清了之前报道的木果楝素K的氢谱和碳谱核磁共振数据的混淆之处。