Among the synthesized quinoxaline sulfonamide Schiff base derivatives, compound 1g showed the strongest overall killing-rate performance reported in the study, indicating that the synthesized quinoxaline sulfonamide Schiff bases possess measurable antibacterial activity under the experimental conditions used.
Compound 6o represents a promising lead for novel demethylation inhibitor fungicides for crop protection and exhibited good biosafety toward apple and rice seedlings.
Seven novel phenyl-O-β-d-ribofuranoside derivatives (1–7), along with four known naphthalenones (8–11), were isolated from the endophytic fungus Neofusicoccum sp. LZUC-S1 using a bioactivity-guided isolation. Their chemical structures were elucidated through an integrated analysis of IR, NMR, and HRESIMS data, and ve...
Quinoxaline derivatives are of continuing interest because of their diverse biological properties and their suitability for structural modification. This study synthesised a series of (E)-4-methyl-N'-(1-phenylethylidene)tetrazolo[1,5-a]quinoxaline-8-sulfonohydrazide derivatives and evaluated their antibacterial activit...
A matched library of twelve 8-substituted 2,5-dihydro-1,5-benzothiazepines was synthesized by trifl uoroacetic-acid-catalyzed cyclocondensation of six 5-substituted 2-aminobenzenethiols with either a naphthyl chalcone (series A, 5a–5f) or a 2,4-dichlorophenyl chalcone (series B, 5g–5l). Isolated yields were 60–70%. Str...
Eugenol is the main component of clove basil oil, mainly extracted from Syzygium aromaticum. In order to discover biorational natural product-based pesticides, 24 novel eugenol acyloxy/sulfonyloxy derivatives (3a-q and 4d,f,j-n) containing an isoxazoline ring were designed and synthesized by simultaneously introducing...
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