“…They were tested at 90% or higher purity, determined by HPLC. The compounds assayed were: vanillin ( 1 ) and, 4-hydroxy-3-methoxycinnamaldehyde ( 2 ), both isolated from Melia azedarach (Carpinella et al, 2003 ), ilicol ( 3 ) isolated from Flourensia oolepis (Diaz Napal and Palacios, 2013 ), scopoletin ( 4 ) obtained from M. azedarach (Carpinella et al, 2005 ), ( Z,Z )-5-(trideca-4,7-dienyl)-resorcinol ( 5 ) isolated from Lithrea molleoides (Carpinella et al, 2011 ), 2′,4′-dihydroxychalcone ( 6 ) and (-)-pinocembrin ( 7 ) both obtained from F. oolepis (Diaz Napal et al, 2009 ; Joray et al, 2015 ), naringenin ( 8 ) isolated from Baccharis salicifolia (Céspedes et al, 2006 ; del Corral et al, 2012 ), dalenin ( 9 ) obtained from Dalea elegans (Chiari et al, 2011 ), apigenin ( 10 ) isolated from B. salicifolia (del Corral et al, 2012 ), quercetin ( 11 ), 3- O -methylquercetin ( 12 ), and 23-methyl-6- O -desmethylauricepirone ( 13 ) obtained from Achyrocline satureioides (Joray et al, 2011 , 2013 ) and (±)-pinoresinol ( 14 ) and meliartenin ( 15 ) both obtained from M. azedarach (Carpinella et al, 2002 , 2003 ). 1-acetoxy-(+)-pinoresinol ( 16 ) (Figure 1 ) was purchased from Chem Faces (Wuhan, PR).…”