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Diaryl ether (DE) is a functional scaffold existing widely both in natural products (NPs) and synthetic organic compounds. Statistically, DE is the second most popular and enduring scaffold within the numerous medicinal chemistry and agrochemical reports. Given its unique physicochemical properties and potential biological activities, DE nucleus is recognized as a fundamental element of medicinal and agrochemical agents aimed at different biological targets. Its drug-like derivatives have been extensively synthesized with interesting biological features including anticancer, anti-inflammatory, antiviral, antibacterial, antimalarial, herbicidal, fungicidal, insecticidal, and so on. In this review, we highlight the medicinal and agrochemical versatility of the DE motif according to the published information in the past decade and comprehensively give a summary of the target recognition, structure-activity relationship (SAR), and mechanism of action of its analogues. It is expected that this profile may provide valuable guidance for the discovery of new active ingredients both in drug and pesticide research.The effect of formulating orange juice (OJ) with dietary fibers (DFs) on in vitro bioaccessibility of flavonoids and their ability to inhibit glucose transport in Caco-2 cells were investigated on Valencia orange fruit (OF), OJ, and OJ formulated with 1 and 2.8% DFs. DFs were either orange pomace (P) or commercial pulverized citrus pulp fiber (CF). Juice extraction and formulation with CF led to minimal loss of flavonoids compared to formulation with P (474 μmol/100 g for OF vs 315-368 μmol/100 g for OJ and OJ with CF, and 266-280 μmol/100 g for OJ with P). Addition of DFs led to similar or improved flavonoid bioaccessibility compared to OJ (9.5% in OJ vs 7.9-33.4% with DFs) but higher glucose transport in Caco-2 cells (0.45 μmol/min in OJ alone vs 0.64-0.94 μmol/min with DFs). This paradoxical effect was attributed to potential complexation of flavonoids and DFs, preventing flavonoids from interfering with glucose transport.3-Chlorogentisate is a key intermediate in the catabolism of the herbicide dicamba in R. https://www.selleckchem.com/products/propionyl-l-carnitine-hydrochloride.html dicambivorans Ndbn-20. In this study, we identified two gentisate 1,2-dioxygenases (GDOs), DsmD and GtdA, from Ndbn-20. The amino acid sequence similarity between DsmD and GtdA is 51%. Both of them are dimers and showed activities to gentisate and 3-chlorogentisate but not 3,6-dichlorogentisate (3,6-DCGA) or 6-chlorogentisate in vitro. The kcat/Km of DsmD for 3-chlorogentisate was 28.7 times higher than that of GtdA, whereas the kcat/Km of DsmD for gentisate was only one-fourth of that of GtdA. Transcription of dsmD was dramatically induced by 3-chlorogentisate but not gentisate, whereas gtdA was not induced. Disruption of dsmD resulted in a significant decline in the degradation rates of 3-chlorogentisate and dicamba but had no effect on the degradation of gentisate, whereas the result of disruption of gtdA was converse; the disruption of both dsmD and gtdA led to the inability to degrade 3-chlorogentisate and gentisate. This study revealed that 3-chlorogentisate but not gentisate or 3,6-DCGA is the ring-cleavage substrate in the dicamba degradation pathway in R. dicambivorans Ndbn-20; DsmD is specifically responsible for cleavage of 3-chlorogentisate, whereas GtdA is a general GDO involved in the catabolism of various natural aromatic compounds.A total of 20 1,2,4-triazole Mannich base derivatives bearing the 6-fluoroquinazolinylpiperidinyl moiety were designed, synthesized, and evaluated as antimicrobial agents against phytopathogenic bacteria and fungi according to the molecular hybridization strategy. Of note, the structure of target compound 4h was clearly confirmed through single-crystal X-ray diffraction analysis. The turbidimetric assays indicated that some compounds exhibited excellent antibacterial efficacies in vitro against Xanthomonas oryzae pv. oryzae (Xoo). For example, compounds 4c, 4f, 4j, and 7j had EC50 values of 23.6, 18.8, 23.4, and 24.3 μg/mL, respectively, which were far superior to that of agrobactericide bismerthiazol (EC50 = 92.4 μg/mL). In particular, compound 4f demonstrated a potent anti-Xoo activity approximately five times more active than that of bismerthiazol. Moreover, in vivo assays showed the excellent protective and curative activities of compound 4f against rice bacterial blight, having the potential as an alternative bactericide for controlling Xoo. The structure-activity relationship analysis showed a good pesticide-likeness concerning compound 4f, following Tice's criteria. The anti-Xoo mechanism of compound 4f was preliminarily explored by scanning electron microscopy measurements in living bacteria. Finally, several compounds also exhibited good antifungal activities in vitro against Gibberella zeae at 50 μg/mL. In short, the presented work showed the potential of 6-fluoroquinazolinylpiperidinyl-containing 1,2,4-triazole Mannich base derivatives as effective bactericides for controlling Xoo.The effects of cetyltrimethylammonium bromide (CTAB) on the aggregation behavior of sodium lignosulfonate (NaLS) in concentrated solutions were investigated by rheology, conductivity, ζ-potential, surface tension, contact angle, and elemental analysis measurements. Results showed that the presence of CTAB led to increased aggregate effects and enhanced association networks due to intermolecular bridging caused by the formation of mixed aggregates containing NaLS hydrophobes and CTAB molecules at CTAB/NaLS mixing ratios (w/w) below stoichiometric mass ratio (SMR). However, further addition of CTAB resulted in the progressive disruption of network structures due to electrostatic repulsions between aggregates. There were electrostatic and hydrophobic interactions between NaLS and CTAB. The NaLS/CTAB mixing system could form regular colloidal spheres via electrostatic and hydrophobic self-assembly in an EtOH/water mixture. As the addition of CTAB increased, the ζ-potential of NaLS/CTAB colloidal spheres was decreased, and the particle size was increased. This work provides a novel approach to the value-added utilization of lignosulfonate biomass resources.
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