Two new coumarins have been isolated from the leaves of Geijera parviflora Lindl. One of these, dehydrogeijerin, has been shown to be 6-(ß,ß-dimethylacrylyl)-7-methoxycoumarin (I) and the other, geiparvarin, to be 7-(4,7-epoxy-3,7-dimethyl-6-oxoocta-2,4- dienyloxy)coumarin (IX).
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Lahey et al. (1967) studied this question.