Determination of the quantitative and qualitative of Isoastragaloside and Astragaloside-Ⅳ in Xinjikang injection by the method of HPLC-ELSD;

Two new flavan glycosides from Abacopteris penangiana;

Results One isoflavone glycoside and three isoflavones were purified anddetermined as 8-methylretusin-7-O-β-D-glucopyranoside (Ⅳ), retusin 8-methyl ether ( Ⅱ ), 4 , 7, 8-trimethoxyisoflavone ( Ⅲ ), and afrormosin ( Ⅵ ).

One new flavone and one new isoflavone glycoside were isolated along with twenty-six known related compounds from the rhizome of Belamcanda chinensis (Iridaceae) , and their structures were characterized as 5,4′-dihydroxy-6,7-methylenedioxy-3′-methoxyflavone, and 3′,5′-dimethoxy irisolone-4′-O-β-D-glucoside on the basis of spectroscopic methods and chemical evidence.

Reviews on research of isoflavanones synthesis;

Result: Six compounds were identified as: 7,2′-dihydroxy-3′,4′-dimethoxyisoflavan(1),2′-hydroxy-3′,4′-dimethoxyisoflavan-7-O-β-D-glucopyranoside(2),8,2′-dihydroxy-7,4′-dimethoxyisoflavan(3),7-hydroxy-4′-methoxyisoflavone(4),7,3′-dihydroxy-4′-metho-xyisoflavone(5),9,10-dimet.

Isoflavans and Isoflavone from Astragalus hoantchy;