A high-performance liquid chromatography with circular dichroism detector for determination of stereochemistry of 6, 9-oxygen bridge dibenzocyclooctadiene lignans from kadsura coccinea
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- 作者：Hui ZHU ; Liang XU# ; Shi-Lin YANG ; He-Ran LI ; heranli@suda.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：6 ; 9-Oxygen bridge dibenzocyclooctadiene lignans ; Kadsura coccinea ; High-performance liquid chromatography using circular dichroism detection (HPLC-CD) ; Kadsulignan Q ; Kadsulignan L
- 刊名：Chinese Journal of Natural Medicines
- 出版年：2015
- 出版时间：October 2015
- 年：2015
- 卷：13
- 期：10
- 页码：791-795
- 全文大小：1346 K
文摘
The stereochemistry of two 6, 9-oxygen bridge dibenzocyclooctadiene lignans from Kadsura coccinea, are difficult to separate and very unstable. The present study was designed to develop a high-performance liquid chromatography using circular dichroism detection for the analysis of the stereochemistry. A new 6, 9-oxygen bridge dibenzocyclooctadiene lignans named Kadsulignan Q was firstly found with an S-biphenyl configuration. The other compound was identified as Kadsulignan L with an R- biphenyl configuration. In order to obtain kinetic data on their reversible interconversion, the stability was measured at different deuterated solvents such as deuterated methanol, deuterated chloroform and deuterated dimethylsulfoxide. The lignans were more unstable and converted more easily in deuterated methanol than in deuterated chloroform and deuterated dimethylsulfoxide.