[Chemical constituents from fruits of Aristolochia mollissima and their nematicidal activity against root-knot nematode].

In the present study, in vitro nematicidal activity of chemical compositions from the methanol extract of Aristolochia mollissima fruits against the second stage juvenile (J2) of Meloidogyne javanica have been investigated. By using silica gel column chromatography, Sephadex LH-20 gel column chromatography methods, fourteen compounds were isolated from methanol extract of A. mollissima fruits.

Aristololactam derivatives from the fruits of Aristolochia contorta Bunge.

Three new aristololactam derivatives, aristololactam W-Y (1-3), and three known compounds (4-6) were isolated from the fruits of Aristolochia contorta Bunge. Compounds 1 and 2 represent the first example of an N-CHOCH aristololactam derivative from natural products. Their structures were elucidated by 1D/2D NMR and HRESIMS spectra.