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090			_aB-12943
245	1	0	_aThe 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
490	0		_vActa Crystallographica Sect. C, 52(6), p.1574-1576, 1996
520	3		_aEcdysantherin, 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.
700	1	2	_aLuger, P.
700	1	2	_aWeber, M.
700	1	2	_aDung, M.X.
700	1	2	_aKy, P.T.
700	1	2	_aThe, C.L.
856	4	0	_uhttps://drive.google.com/file/d/1Mj4zwYrTsqcV1qCJ8t6dpf_25DMUZo1P/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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