Abstract

CRUZ, Frederico G.; MOREIRA, Luciana de M.; SANTOS, Nelson A. S.  and  GUEDES, Maria L. S.. Additional Coumarins from Kielmeyera reticulata. J. Braz. Chem. Soc. [online]. 2002, vol.13, n.5, pp. 708-708. ISSN 0103-5053.  http://dx.doi.org/10.1590/S0103-50532002000500029.

Three new 4-phenylcoumarins, 5,7-dihydroxy-6-(2'-hydroxy-3'-methyl-3'-butenyl)-8-(4" -cinnamoyl-3"-methyl-1"-oxobutyl)-4-phenylcoumarin, 7-hydroxy-8-(4"-cinnamoyl-3"-methyl-1" -oxobutyl)-2'-(2-hydroxyisopropyl)-dihydrofurano(5',4':5,6)-4-phenylcoumarin, and 5,7-dihydroxy-8-(4"-cinnamoyl-3"-methyl-1"-oxobutyl)-4-phenylcoumarin, along with the known 4-n-propylcoumarins, 7-hydroxy-8-(4"-cinnamoyl-3"-methyl-1"-oxobutyl)-2',2'-dimethylpyrano (6',5':5,6)-4-n-propylcoumarin, 5-hydroxy-6-(4"-cinnamoyl-3"-methyl-1"-oxobutyl)-2',2' -dimethylpyrano(6',5':7,8)-4-n-propylcoumarin, the xanthone, 2,3-methylenedioxyxanthone and δ-tocotrienol were isolated from the organic extracts of Kielmeyera reticulata stems .

Keywords : Kielmeyera reticulata; Guttiferae; Clusiacea; 4-phenylcoumarins; 4-propylcoumarins; neoflavonoids.