Ts. Wu et al., ARISTOLIDE-A AND ARISTOLIDE-B, 2 NOVEL DIHYDROPHENANTHRENELACTONES FROM ARISTOLOCHIA-HETEROPHYLLA HEMSL, Chemical and Pharmaceutical Bulletin, 46(2), 1998, pp. 370-372
Two novel compounds, aristolide-A(1) and -B(2) were isolated from the
root and stem of Aristolochia heterophylla HEMSL. Their structures wer
e determined by spectral analysis. This is the first instance of the i
solation of dihydrophenanthrenelactones from a natural source.