20 桑の根皮より得られる新フェノール性化合物の構造

概要

論文の詳細を見る
From the Chinese crude drug "Sang-Bai-Pi" (Japanese name Sohakuhi), the root bark of Morus sp., two new flavanones were isolated and named sanggenon G (I) and kuwanon L (IV). On the other hand, kuwanons K (II), L (IV), N (III), O (V) and P (IX) were isolated from the Japanese root bark. The structures were shown with chemical and spectral data. These compounds are regarded biogenetically as Diels-Alder adducts of chalcones and dehydroprenyl (or geranyl) phenol derivatives. Mulberrofurans F (X), G (XI), H (XII), I (XIII) and kuwanon M (VIII) were also isolated from Japanese root barks. These compounds seem to be oxidation products of such Diels-Alder adducts or a Diels-Alder adduct of prenylflavone and dehydroprenylflavone. Conformational isomers of some Diels-Alder adducts are discussed with ^1H relaxation times (T_1) of sanggenons C (VI) and D (VII).
天然有機化合物討論会の論文
1983-09-15