Previous studies showed that salicylic acid (SA)-deficient transgenic Arabidopsis expressing the salicylate hydroxylase gene NahG had a higher tolerance to moderate salt stress. SA may potentiate stress response of germination and growth seedlings by inducing reactive oxygen species (ROS). However, detailed mechanism for better adaption plants is largely unknown. In present study we found GSH/GSSG (glutathione/oxidized glutathione) ratio ASA/DHA (ascorbic acid/dehydroascorbate) in during be...

Nitrate reductase (NR) is the key enzyme for nitrogen assimilation in plant cells and also works as an important enzymatic source of nitric oxide (NO), which then regulates growth resistance to biotic abiotic stresses. However, how NR activities are finely tuned modulate these biological processes remain largely unknown. Here we present a SWISSPROT 3D analysis different from sources indicating possible sites S-nitrosylation, show some evidence immunoblottings S-nitrosated (SNO-) proteins. We...

A green, safe and effective biocatalytic process was developed for 1,6-hexanediol production which is superior to the traditional chemical approach.

Abstract Aliphatic α,ω‐diamines (DAs) are important monomer precursors that industrially produced by energy‐intensive, multistage chemical reactions harmful to the environment. Therefore, development of sustainable green DA synthetic routes is highly desired. Herein, we report an efficient one‐pot in vivo biocatalytic cascade for transformation cycloalkanes into DAs with aid advanced techniques, including RetroBioCat tool route design, enzyme mining finding appropriate enzymes and microbial...

Cytochrome P450 monooxygenases (P450s) play crucial roles in the oxyfunctionalization of non-activated hydrocarbons, thus bridging gap between simple molecules and high value-added fine chemicals. The introduction P450s into artificially designed cascade reactions provides an exciting opportunity to accomplish challenging access organic compounds that cannot be achieved by traditional chemical catalysts or natural metabolic pathways. main objective this review is provide overview different...

We review the recent progress of synthesis routes for four α,ω-C6 bifunctional compounds (6-hydroxyhexanoic acid, 6-aminocaproic 1,6-hexanediol and 1,6-hexanediamine), focusing on involving sustainable catalysts or renewable feedstocks.

Abstract This article reports a novel lightweight integrated multifunctional composite (LIMC) with good thermal ablative and insulating properties for high temperature extreme environment. LIMC, which is an woven carbon fiber preform reinforced phenolic aerogel composites, was prepared using vacuum impregnation ambient pressure drying. The as‐prepared LIMC consisted of dense surface layer exposed to environment, insulation zone manage the heat load. influences weaving parameter resin...

Ultrasonic-assisted enzymatic extraction (UEAE) and response surface methodology (RSM) were used to isolate polysaccharides from Setaria viridis (SVP). Optimal conditions in the hydrolysis process were: duration, 68 min; temperature, 51°C; ratio of enzyme raw material, 1.6%; liquid 20 mL/g. Then, following ultrasonic treatment (180 W, 60°C, 60 min), experimental yield was 8.94 ± 0.38%. Crude SVP purified by DEAE cellulose-52 chromatography Sephadex G-100 chromatography, resulting isolation...

A novel protocol for the synthesis of pyrido[2,3-b]indoles (α-carbolines, 3) from (E)-3-(2-oxo-2-phenylethylidene) indolin-2-one derivatives 1 and 1,1-enediamine (EDAM) 2a via an unexpected cascade reaction in ethanol was developed. Pyrido[2,3-b]indole 4 were obtained by same reaction, albeit stirring mixture a longer period time (about 48 h). As result, two kinds functionalized α-carbolines 3 synthesized facile (E)-3-(2-oxo-2-phenylethylidene)indolin-2-one 2-(nitromethylene)imidazolidine...

A new class of organoselenium-saccharide derivatives, 2-amino-2-deoxy-β-D-glucose-modified benzo[d][1,2]selenazol-3-(2H)-one has been synthesized via the cyclization reaction 2-(chloroseleno)benzoyl chloride and O-protected D-glucosamine derivatives. An efficient synthetic method for preparation this type compounds was developed. It found that acetone can react with chloroseleno group under basic conditions, derivatives free hydroxy groups were obtained only when OH-1 saccharide protected.

Abstract The integration of trifluoromethyl groups and three-dimensional quaternary carbon moieties into organic molecules has emerged as a prominent strategy in medicinal chemistry to augment drug efficacy. Although (hetero)aromatic amines derivatives are prevalent frameworks pharmaceuticals, the development trifluoromethyl-embedded, intricately structured alkyl amine scaffolds for research remains significant challenge. Herein, we present metallaphotoredox multicomponent amination...

Abstract Aliphatic α,ω‐diamines (DAs) are important monomer precursors that industrially produced by energy‐intensive, multistage chemical reactions harmful to the environment. Therefore, development of sustainable green DA synthetic routes is highly desired. Herein, we report an efficient one‐pot in vivo biocatalytic cascade for transformation cycloalkanes into DAs with aid advanced techniques, including RetroBioCat tool route design, enzyme mining finding appropriate enzymes and microbial...

1,1′-Bi(2-naphthol) (BINOL) was readily anchored onto polymer supports via the Suzuki-Miyaura coupling and used as an immobilized chiral ligand in titanium-catalyzed asymmetric oxidation of thioethers. The polymer-supported BINOL 3 prepared by reaction cross-linked polystyrene-supported arylboronic acid 1 with (R)-6-bromo-1,1′-bi(2-naphthol) (2, eq. 1). aryl methyl thioethers 4a 4b tert-butyl hydroperoxide took place presence a titanium complex derived from tetraisopropoxide to give...

Abstract Aliphatic α,ω-diamines (DAs) are important monomer precursors in polyamide plastic manufacturing. However, the dominant industrial process for DA synthesis involves energy-intensive, multistage chemical reactions that harmful to environment. For instance, 1,6-hexanediamine (HMD), one of most prominent monomers nylon-66 synthesis, is mainly synthesized with currently high technological control by butadiene hydrocyanation, which suffers from use highly toxic hydrogen cyanide,...