Three New Chromanones from Calea clausseniana |
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| Authors: | Andréa M. do Nascimento Dionéia C. R. de Oliveira |
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| Affiliation: | 1. Departamento de Química, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Campus Universitário Morro do Cruzeiro Bauxita, CEP 35400‐000, Ouro Preto, MG, Brazil, (phone: +55‐31‐3559‐1769;2. fax: +55‐31‐3559‐1707);3. Departamento de Física e Química, Faculdade de Ciências Farmacêuticas de Ribeir?o Preto, Universidade de S?o Paulo, Avenida do Café s/n, 14040?–?903, Ribeir?o Preto, SP, Brazil |
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| Abstract: | Three new chromanones, uniflorol A acetate ( 1 ), uniflorol B acetate ( 2 ), and 2,2‐dimethyl‐6‐{1‐[(4′‐acetoxy)angeloyloxy]ethyl}chroman‐4‐one ( 3 ), together with the known chromanone 4 , and two known p‐hydroxyacetophenone derivatives, 5 and 6 , were isolated from the CH2Cl2 crude extract of the underground parts of Calea clausseniana Baker . The structures of the new compounds were elucidated by spectroscopic analyses, including 2D‐NMR techniques. |
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| Keywords: | Calea clausseniana Chromanones Acetophenones, p‐hydroxy |
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