A new dihydropyranone, ( R)-6-[( S)-2-hydroxy-4-(4-hydroxyphenyl)butyl]-5,6-dihydropyran-2-one ( 1), was isolated from Tapinanthus dodoneifolius. The structure was determined from spectroscopic and X-ray crystallographic analysis. Compound 1 (named dodoneine) showed a relaxing effect on preconstricted rat aortic rings (IC 50 of 81.4 +/- 0.9 microM).
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| http://dx.doi.org/10.1021/np070355x | DOI Listing |
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