Components of Root Bark of Cudrania tricuspidata; 3.1,2. Isolation and Structure Studies on the Flavonoids

Tomoko Fujimoto; Taro Nomura

doi:10.1055/s-2007-969453

Planta Medica, Table of Contents

Planta Med 1985; 51(3): 190-193
DOI: 10.1055/s-2007-969453

Research Articles

Components of Root Bark of Cudrania tricuspidata; 3.^1,2. Isolation and Structure Studies on the Flavonoids

Tomoko Fujimoto, Taro Nomura

Faculty of Pharmaceutical Sciences, Toho University, 2-2-1, Miyama, Funabashi, Chiba 274, Japan

1 Part XXIV on Constituents of the Cultivated Mulberry Tree. Part XXIII: Ikuta, H., Fukai, T., Nomura, T., Uzawa, J., Heterocycles submitted. Part 2 on Components of Root Bark of Cudrania tricuspidata: Fujimoto, T., Hano, Y., Nomura, T., Uzawa, J. (1984) Planta Med. 50, 1612 A part of this work was reported in preliminary communication: Fujimoto, T., Nomura, T. (1984) Heterocycles 22, 997

Abstract

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Abstract

A new isoprene substituted flavanone (1), named cudraflavanone A, was isolated from the root bark of Cudrania tricuspidata (Carr.) Bur. together with three known flavonoids, cycloartocarpesin (2), populnin (3), and quercimeritrin (4). The structure of 1 was determined on the basis of the spectral evidence and the total synthesis. The structure of euchrestaflavanone C (5) which had been isolated from Euchresta japonica Hook, f. ex Regel was also determined on the basis of the total synthesis.

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