Flavone synthesis was modified by the use of isopropyl group as a protective group and this way was applied to the preparation of flavones possessing, 5, 7-dihydroxy-6-methoxyl, 5, 7-dihydroxy-8-methoxyl and 5, 6, 7-trihydroxyl groups in the ring A isolated from Scutellaria species. the synthetic flavones were identical with the respective natural products, and their structures were confirmed.
抄録全体を表示