Constituents of sneezewood, Ptaeroxylon obliquum(Thunb.) Radlk. Part I. Chromones

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Abstract
Extraction of the timber of sneezewood has given a number of chromones and coumarins. The constitution of two novel chromones, karenin and desoxykarenin, has been elucidated by conversion to a derivative of a third chromone peucenin.