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Molecules 2011, 16(10), 8866-8873; doi:10.3390/molecules16108866

A New Languidulane Diterpenoid from Salvia mexicana var. mexicana

Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510 México D.F., México
* Author to whom correspondence should be addressed.
Received: 27 September 2011 / Revised: 17 October 2011 / Accepted: 18 October 2011 / Published: 21 October 2011
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From the aerial parts of Salvia mexicana var. mexicana, two C-10 epimers (α and β) of salvimexicanolide were isolated. Our interpretation of the data, especially the 13C NMR, led us to conclude that the previously described 13C-NMR spectrum of the α-epimer was not accurately assigned and it actually corresponds to the β-epimer. The structures proposed for the salvimexicanolides were verified by means of NOESY experiments. Dugesin B, arbutin, naringenin and the mixture of oleanolic and ursolic acids were also isolated from this Salvia spp.
Keywords: Salvia mexicana; Labiatae; diterpene; languidulanes; NMR Salvia mexicana; Labiatae; diterpene; languidulanes; NMR
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Frontana-Uribe, B.A.; Escárcega-Bobadilla, M.V.; Estrada-Reyes, R.; Morales-Serna, J.A.; Salmón, M.; Cárdenas, J. A New Languidulane Diterpenoid from Salvia mexicana var. mexicana. Molecules 2011, 16, 8866-8873.

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