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Communication | Regular issue | Vol 12, No. 10, 1979, pp.1289-1295
Published online, 1st January, 1970
DOI: 10.3987/R-1979-10-1289
On the Structures of Mulberrin, Mulberrochromene, Cyclomulberrin, and Cyclomulberrochromene

Taro Nomura* and Toshio Fukai

*School of Pharmaceutical Sciences, Toho University, 2-2-1, Miyama, Funabashi, Chiba 274-8510, Japan


Direct comparison of mulberrin with kuwanon C, and mulberrochromene with morusin were carried out. Mulberrin and mulberrochromene were proved to be identical with kuwanon C and morusin, respectively. The linear structures of mulberrin and mulberrochromene as well as cyclomulberrin and cyclomulberrochromene should be reversed to the angular structures, I, II, III, and IV, respectively.