Stereochemistry determination by Powder X-Ray diffraction analysis and NMR spectroscopy residual dipolar couplings

For a new steroidal lactol, jaborosalactol 24, isolated from Jaborosa parviflora, NMR spectroscopy residual dipolar couplings and powder X-ray diffraction analysis independently gave the same stereochemistry at C23-C26. Conventional NMR spectroscopic techniques, such as NOE and 3J coupling-constant...

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Detalles Bibliográficos
Autores: García, Manuela Emila, Pagola, Silvina, Navarro-Vázquez, Armando, Phillips, Damilola D., Gayathri, Chakicherla, Krakauer, Henry, Stephens, Peter W., Nicotra, Viviana Estela, Gil, Roberto Ricardo
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2009
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/27045
Acceso en línea:http://hdl.handle.net/11336/27045
Access Level:acceso abierto
Palabra clave:Stereochemistry
Residual Dipolar Couplings
Power Xray Diffraction
Withanolides
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
Descripción
Sumario:For a new steroidal lactol, jaborosalactol 24, isolated from Jaborosa parviflora, NMR spectroscopy residual dipolar couplings and powder X-ray diffraction analysis independently gave the same stereochemistry at C23-C26. Conventional NMR spectroscopic techniques, such as NOE and 3J coupling-constant analysis failed to unambiguously determine this stereochemistry.

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