Bioactivity-directed fractionation of the methanol extract of the roots of Ratibida mexicana resulted in the isolation of two bioactive sesquiterpene lactones, isoalloalantolactone and elema-1,3,11-trien-8,12-olide. Both compounds caused a significant inhibition of the radicle growth of Amaranthus
The allelopathic potential of Ipomoea tricolor (Convolvulaceae), used in Mexican traditional agriculture as a weed controller, has been demonstrated by measuring the inhibitory activity of organic extracts on seedling growth of Amaranthus leucocarpus and Echinochloa crus-galli. Bioactivity-directed
Two new tetracyclic triterpenoids, echinochlorins C (1) and D (2), and sawamilletin (3) with new spectroscopic data were isolated from Echinochloa utilis Ohwi & Yabuno grains, along with one known triterpenoid (4) and eight sterols (5-12). Their structures were elucidated by spectroscopic data
Alpha-thujaplicin, a minor component of Thujopsis dolabrata SIEB. et ZUCC. var. hondai MAKINO, which was synthesized, showed the antibacterial activity, phytogrowth-inhibitory effect, inhibition of carboxypeptidase A and cytotoxic effect. Antibacterial activity of alpha-thujaplicin on Enterococcus
All imidazolinone (IMI) herbicides are chiral consisting of two enantiomers; however, studies on the enantioselectivities of their interactions are limited. This study is a systematic assessment of the enantiomers and racemates of IMI herbicides, including semi-preparation and determination of
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