... 0 1984 Rrgamon Press Ltd ANGUSTIFOLIN, A COUMARIN FROM RUT' ANGUSTZFOLlA JUAN B.DEL CASTILLO,FRANCISCO RODRIGUEZ LUIS* and MIGUEL SECUNDINO Departamento de ... A phytochemlcal screening of C. peregrina indicated several components of possible medicinal interest [l, 21. During the phytochemical analysis methyl p-coumarate was isolated in small amounts (< 0.0002 %) from the ammonium hydroxide-methanol extract. ...