[Four new compounds from the non-polar extract of the plant Amyris brenesii (Rutaceae) from Costa Rica].
Fractionation of a non polar extract of the aerial parts of Amyris brenesii collected in Rio Cuarto, Grecia, Costa Rica has resulted in the isolation of four new compounds, 6-hidroxy-6-O-(3-hidroxymethyl-3-methylalyl)-angelicin 1, 6-(N-acetyl-2-etanamin)-2,2-dimethyl-2H-cromen 2, the lignan 2,5-dehidrohinokinin 3 and N-acetyl-O-(geranyl)-tiramine 4. In addition, we isolated six previously known compounds: the lignans hinokinin 5 and Justicidin E 6, the coumarins scopoletin 7 and marmesin 8, 24-moretenoic acid 9, and the nitrogen compound O-(3,3-dimethylalyl)-halfordinol 10. All the separations were done with chromatographic techniques and the structures were elucidated by using 1D and 2D NMR techniques.
Centro de Investigación en Productos Naturales (CIPRONA), Universidad de Costa Rica, San José, Costa Rica. mcharria@equi.ucr.ac.cr
Max
M
Chavarría
Victor
V
Castro
Luis
L
Poveda
Murillo
M
Renato
D002845:Chromatography; D003364:Costa Rica; D009682:Magnetic Resonance Spectroscopy; D010936:Plant Extracts / Q000737:chemistry*; D027821:Rutaceae / Q000737:chemistry*
D010936:Plant Extracts