Ebenaceae extractives. Part III. Binaphthaquinones from Diospyros species
作者:A. L. Fallas、R. H. Thomson
DOI:10.1039/j39680002279
日期:——
Diospyrin and isodiospyrin have been isolated from the bark of Diospyros mespiliformis. Isodiospyrin was also found in the bark and wood of D. virginiana. Isodiospyrin is optically active and, like diospyrin, is an unsymmetrical dimer of 7-methyljuglone, the two naphthaquinone moieties being coupled at C-6 and C-8′. The bark of D. elliptifolia contains betulin, lupeol, plumbagin (2-methyljuglone),