In addition to mulberrofuran D, a new 2-arylbenzofuran derivative, six flavone derivatives, morusin, oxydihydromorusin, cyclomorusin, kuwanon C, G and H, were isolated from extracts of root bark of Morus australis P OIR . The structure of mulberrofuran D was shown to be 5 on the basis of spectral and chemical data. Mulberrofuran D is the first example of a geranylated and prenylated 2-arylbenzofuran derivative found in nature. Key Word Index Morus australis - Moraceae - Mulberrofuran D - 2-Arylbenzofuran - Prenylflavone - Diels-Alder adduct
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Nomura et al. (1983) studied this question.