A high-performance liquid chromatography with circular dichroism detector for determination of stereochemistry of 6, 9-oxygen bridge dibenzocyclooctadiene lignans from kadsura coccinea / 中国天然药物
Chinese Journal of Natural Medicines (English Ed.)
; (6): 791-795, 2015.
Article
em En
| WPRIM
| ID: wpr-812480
Biblioteca responsável:
WPRO
ABSTRACT
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.
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Texto completo:
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Base de dados:
WPRIM
Assunto principal:
Oxigênio
/
Estereoisomerismo
/
Extratos Vegetais
/
Estrutura Molecular
/
Química
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Cromatografia Líquida de Alta Pressão
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Dicroísmo Circular
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Lignanas
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Kadsura
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Ciclo-Octanos
Idioma:
En
Revista:
Chinese Journal of Natural Medicines (English Ed.)
Ano de publicação:
2015
Tipo de documento:
Article