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Bi- and tetraflavonoids from Aristolochia ridicula
F J Carneiro1, N Boralle, D H Silva
1Instituto de Química, Universidade Estadual Paulista, Araraquara, São Paulo, Brazil.
Phytochemistry
|February 24, 2001
Abstract:
From stems of Aristolochia ridicula, two biflavones, four unusual chalcone-flavone dimers and one tetraflavonoid were isolated. The structures of the seven compounds were elucidated by spectroscopic methods.