A New benzopyranbenzofuran dimer from Encelia ventorum.
The chloroform extract of the stems of Encelia ventorum yielded a new benzopyranbenzofuran dimer. The structure was assigned from (1)H-NMR and MS data as 4[2-(5-acetyl-6-hydroxybenzofuranyl)]-2-[6(7-methoxy-2, 2-dimethylbenzo-1 -pyranyl)]-pentan-2-ol.
Proksch
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Phytochemical Laboratory, Department of Ecology and Evolutionary Biology, University of California, Irvine, U.S.A.
Aregullin
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Rodriguez
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