Isoflavones from Garcinia nervosa

Abstract A new isoflavone, 5,7,4′-trihydroxy-2′,3′,6′-trimethoxyisoflavone, nervosin, along with two known isoflavones, irigenin (5,7,3′-trihydroxy-6,4′,5′-trimethoxyisoflavone) and 7-methyltectorigenin(5,4′-dihydroxy-6,7-di-methoxyisoflavone) have been isolated from the leaves of Garcinia nervosa . Their structures have been elucidated on the basis of chemical and spectral evidence.