ISOFLAVONOIDS FROM SOPHORA-SECUNDIFLORA, S-ARIZONICA AND S-GYPSOPHILA

Eight new isoflavonoids, secundiflorols G-I and arizonicanols A-E, wer e isolated from the stem of Sophora secundiflora and the root of S. ar izonica and S. gypsophila and the structures were determined by spectr al analysis. The similarity of flavonoid occurrence was found in the t hree species. From the chemosystematic standpoint, the subgenus Styphn ologbium seems to be composed of two chemical types (S. secundiflora, S. arizonica, and S. gypsophila vs S. japonica and S. affinis). (C) 19 98 Elsevier Science Ltd. All rights reserved.