M. Matsuda et al., CYTOTOXIC 6-SUBSTITUTED 5,6-DIHYDRO-2H-PYRAN-2-ONES FROM A BRAZILIAN MEDICINAL PLANT, CHORISIA-CRISPIFLORA, Heterocycles, 38(6), 1994, pp. 1229-1232
Three cytotoxic 6-substituted 5, 6-dihydro-2H-pyran-2-ones (1 - 3) wer
e isolated from a Brazilian medicinal plant, Chorisia crispiflora. 1 w
as identified as argentilactone, and the structures of two new compoun
ds (2 and 3) were determined on the basis of the physicochemical prope
rties.