D. Ngnokam et al., (-7',7'-DIMETHYL-5-HYDROXY-2R,3S-TRANS-PUBESCHIN FROM ENTANDROPHRAGMA-ENTANDROPHRAGMA-CYLINDRICUM()), Phytochemistry, 37(2), 1994, pp. 529-531
(+)-7',7'-Dimethyl-5-hydroxy-2R,3 S-trans-pubeschin was isolated from
the methanol extract of the heartwood of Entandrophragma cylindricum.
Its structure was determined on the basis of spectroscopic data and a
partial synthesis from (+)-catechin.