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Repositorio Atenea de la Facultad de Ciencias, UNAM >
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Please use this identifier to cite or link to this item:
http://hdl.handle.net/11154/1446
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| Title: | chemical constituents of coutaportla ghiesbregthiana: co-crystallization of two ent-nor-kaurene diterpenes |
| Authors: | Parra-Delgado, H
Toscano, RA
Martínez-Vazqueza, M
García-Argaez, Aída Nelly |
| Issue Date: | 2005 |
| Abstract: | The known nor-diterpene (16R)-ent-17-hydroxy-19-nor-kaur-4-en-3-one and the new nor-diterpene (16R)-ent-19-nor-kaur-4-en-3-oxo-17-oic acid were obtained as a crystalline mixture from roots of C. ghiesbregthiana. Their structures were deduced by spectroscopic means and confirmed by a X-ray diffraction study of the crystalline mixture. Additionally, ursolic and betulinic acids, skimmin, and sucrose were isolated. This is the first chemical study of a member of the Coutaportla genus. |
| URI: | http://hdl.handle.net/11154/1446 |
| ISSN: | 0932-0776 |
| Appears in Collections: | Departamento de Ecología y Recursos Naturales
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