68097-12-1Relevant articles and documents
Prenylation of Apigenin
Roy, D,Khanna, R. N.
, p. 583 - 586 (2007/10/02)
Apigenin (I) on prenylation with 2-methylbut-3-ene-2-ol affords two major and four minor products.The major products are characterized as 6-C-prenylapigenin (II) and 5,4'-dihydroxy-6'',6''-dimethyl-4'',5''-dihydropyranoflavone (III) and the minor products as 7-O-prenylapigenin (IV), 5,4'-dihydroxy-6'',6''-dimethyl-5''-C-prenyl-4'',5''-dihydropyranoflavone (V), 5,4'-dihydroxy-6'',6''-dimethyl-4'',5''-dihydropyranoflavone (VI) and 5,4'-dihydroxy-6'',6''-dimethyl-5''-C-prenyl-4'',5''-dihydropyranoflavone (VII).Prenylation of apigenin with prenyl bromide in presence of methanolic sodium methoxide yields two major products, identified as 6,8-di(C-prenyl)apigenin (VIII) and 6-C-prenylapigenin (II), and four minor products, viz. 7,4'-di-O-prenylapigenin (IX), 8-C-prenyl-5,4'-dihydroxy-6'',6''-dimethyl-4'',5''-dihydropyranoflavone (X), 7-O-prenylapigenin (IV) and 5,4'-dihydroxy-6'',6''-dimethyl-4'',5''-dihydropyranoflavone (VI).Apigenin has been synthesized by a new route in a better yield.