Three New Chromanones from Calea clausseniana

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 undergro...

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Published in:Helvetica chimica acta 2014-01, Vol.97 (1), p.146-150
Main Authors: doNascimento, Andréa M, deOliveira, Dionéia C R
Format: Article
Language:English
Subjects:
Acetophenones
Acetophenones, p‐hydroxy
Calea clausseniana
Chromanones
p-hydroxy
Vegetables
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description 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.
doi_str_mv 10.1002/hlca.201300277
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subjects Acetophenones
Acetophenones, p‐hydroxy
Calea clausseniana
Chromanones
p-hydroxy
Vegetables
title Three New Chromanones from Calea clausseniana
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