The New Pentacyclic Saponine Ecdysantherin [3/9-Hydroxy-20-methylpregn-5,14- dien- 16-one-(18-20 )-lactone ] from Ecdysanthera rosea Hook. et Am. (Apocynaceae)of Vietnam

Tipo de material: Texto

TextoSeries ; Acta Crystallographica Sect. C, 52(6), p.1574-1576, 1996Trabajos contenidos:

Luger, P
Weber, M
Dung, M.X
Ky, P.T
The, C.L

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Resumen: Ecdysantherin, 3/3-hydroxy-20-methylpregn-5,14-dien- 16-one-(18-20)-lactone, C21H2604, a new pentacyclic sap©nine, was isolated from the powder of Ecdysanthera rosea Hook. et Am. (Apocynaceae)of Vietnam, and its structure was elucidated. It was found that ecdysantherin is a pentacyclic sap©nine molecule with three sixmembered and two five-membered rings. An intermolecular OH.-.O hydrogen bond generates infinite chains of molecules in the z direction.

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Ecdysantherin, 3/3-hydroxy-20-methylpregn-5,14-dien- 16-one-(18-20)-lactone, C21H2604, a new pentacyclic sap©nine, was isolated from the powder of Ecdysanthera rosea Hook. et Am. (Apocynaceae)of Vietnam, and its structure was elucidated. It was found that ecdysantherin is a pentacyclic sap©nine molecule with three sixmembered and two five-membered rings. An intermolecular OH.-.O hydrogen bond generates infinite chains of molecules in the z direction.

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