Studies on the Constituents of Sophora Species. VI. Constituents of the Root of Sophora subprostrata CHUN et T. CHEN. (4)

Abstract

Three new flavonoids were isolated from the root of Sophora subprostrata CHUN et T. CHEN, and their structures were established from their spectral data and comparison with the corresponding synthesized derivatives as 6-[3-(2', 4'-dihydroxyphenyl)acryloyl]-7-hydroxy-2, 2-dimethyl-8-(3-methyl-2-butenyl)-2H-benzopyran (I), 2-(2', 4'-dihydroxyphenyl)-8, 8-dimethyl-10-(3-methyl-2-butenyl)-8H-pyrano [2, 3-d] chroman-4-one (IV), and 2', 4', 7-trihydroxy-6, 8-bis (3-methyl-2-butenyl) flavanone (VIII).