An efficient preparation of acetyl isoflavone glucoside
Minor components of isoflavones in soybeans, 7-(6-O-acetyl-β-D- glucopyranosyl)-3-(4-hydroxyphenyl)-4H-1-benzopyran-4-one (6'-O- acetyldaidzin, 5) and 7-(6-O-acetyl-β-D-glucopyranosyl)-5-hydroxy-3-(4- hydroxyphenyl)4H-l-benzopyran-4-one (6'-O-acetylgenist