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. 2001 Aug;57(8):1227-30.
doi: 10.1016/s0031-9422(01)00169-8.

Benzopyrans from Hypericum polyanthemum

A B Ferraz  1 , S A Bordignon, C Staats, J Schripsema, G L Lino von Poser
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Benzopyrans from Hypericum polyanthemum

A B Ferraz et al. Phytochemistry. 2001 Aug.

Abstract

From the aerial parts of Hypericum polyanthemum Klotzsch ex Reichardt (Guttiferae), three chromenes, 6-isobutyryl-5,7-dimethoxy-2,2-dimethyl-benzopyran; 7-hydroxy-6-isobutyryl-5-methoxy-2,2-dimethyl-benzopyran and 5-hydroxy-6-isobutyryl-7-methoxy-2,2-dimethyl-benzopyran were isolated. Their structures were determined by NMR spectroscopic analyses.

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