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Benzopyrans from Hypericum polyanthemum.
Ferraz, A B; Bordignon, S A; Staats, C; Schripsema, J; Lino von Poser, G L.
Affiliation
  • Ferraz AB; Programa de Pós Graduação em Ciências Farmacêuticas, UFRGS. Av. Ipiranga, 2752, 90610-000, RS, Porto Alegre, Brazil.
Phytochemistry ; 57(8): 1227-30, 2001 Aug.
Article in En | MEDLINE | ID: mdl-11454349
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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Collection: 01-internacional Database: MEDLINE Main subject: Plants, Medicinal / Benzopyrans Country/Region as subject: America do sul / Brasil Language: En Journal: Phytochemistry Year: 2001 Type: Article Affiliation country: Brazil
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Collection: 01-internacional Database: MEDLINE Main subject: Plants, Medicinal / Benzopyrans Country/Region as subject: America do sul / Brasil Language: En Journal: Phytochemistry Year: 2001 Type: Article Affiliation country: Brazil