Sophora tetraptera

The carbonyl carbons of lupanine, hydroxylupanine L. angustifolius L.), and of matrine (XVII) (Sophora tetraptera F. Mill.), which were obtained from cadaverine (1 5-14C) administration, were isolated as benzoic acid. This was accomplished by reacting the alkaloids with phenyl lithium and oxidizing the product. In all cases the benzoic acid had one sixth of the activity of the degradation product. It is therefore probable that the biogenesis of the three named alkaloids follows a similar course. 

Sophora microphylla Ait. (40) Sophora pachycarpa Schrenk. (80, 81, 82) Sophora tetraptera F. Mill. (83) Sophora species of the 6 84 ... 

Shirataki, Y. Matsuoka, S. Komatsu, M. Ohyama, M. Tanaka, T. linuma, M. Four isoflavanones from roots of Sophora tetraptera. Phytochemistry 1999, 50, 695-701. 

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