K. Ishiguro et al., ANTIPRURITIC DINAPHTHOFURAN-7,12-DIONE DERIVATIVES FROM THE PERICARP OF IMPATIENS-BALSAMINA, Journal of natural products, 61(9), 1998, pp. 1126-1129
Dinaphthofuran-7,12-dione derivatives named balsaminones A (1) and B (
2) were isolated from the pericarp of Impatiens balsamina L. together
with the known compound 2-methoxy-1,4-naphthoquinone (3). Their struct
ures were elucidated by spectral techniques. These compounds have sign
ificant antipruritic activity.