Abstract
A novel prenylated α-pyrone has been isolated from the leaf resin of Diplacus aurantiacus. From its 1H and 13C NMR spectra, it is shown to be 3-(2-hydroxypropyl)-4-hydroxy-6-geranyl-2-pyrone. A geranylflavanone isolated from the same material is identified as 3′-methyl-6-geranyltaxifolin. The earlier tentative structure of 4′-methyldiplacol thus needs to be revised.
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