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Three New Chromanones from Calea clausseniana
Author(s) -
do Nascimento Andréa M.,
de Oliveira Dionéia C. R.
Publication year - 2014
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.201300277
Subject(s) - chemistry , ethyl acetate , stereochemistry , organic chemistry
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 CH 2 Cl 2 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.