Author: tianli

Ghosh, Enakshi; Venkatesan, Radhika published the artcile< Plant Volatiles Modulate Immune Responses of Spodoptera litura>, Recommanded Product: 3,7-Dimethylocta-1,6-dien-3-ol, the main research area is Herbivory; Insect immunity; Linalool; Ocimene; Plant volatiles; Tritrophic interaction.

Plants emit a specific blend of volatiles in response to herbivory and these volatiles, which often attract predators and parasitoids function as an indirect plant defense. The impact of plant volatiles in shaping herbivore defenses is unclear. Here, we report that specific plant volatiles induce immune responses in the polyphagous herbivore, Spodoptera litura. We characterized the hemocyte profile and established their functional significance with respect to ontogeny and exposure to specific plant volatiles. Fifth instar larvae showed the highest number and hemocytes diversity. We characterized seven different types of hemocytes, of which granulocytes performed phagocytosis, oenocytoids showed melanization activity, and plasmatocytes along with granulocytes and oenocytoids were found to be involved in encapsulation. Among the six volatiles tested, exposure to (E)-β-ocimene caused the highest increase in total hemocytes number (THC) followed by linalool and (Z)-3-hexenyl acetate exposure. Although THC did not differ between these three volatile treatments, circulating hemocytes diversity varied significantly. (E)-β-ocimene exposure showed higher number of plasmatocytes and phenol oxidase activity. The interaction of the parasitic wasp Bracon brevicornis with (E)-β-ocimene exposed larvae was poor in terms of delayed paralysis and lower egg deposition. In choice assays, the wasp showed clear preference towards control larvae indicating (E)-β-ocimene treatment renders the host unattractive. Hemocyte profiles post-parasitoid exposure and (E)-β-ocimene treatment were similar indicating cue-based priming. When challenged with Bacillus thuringiensis, linalool exposure resulted in the highest survival as compared to other volatiles. Our results show that specific HIPVs can modulate cellular immunity of S. litura, revealing a new role for HIPVs in tri-trophic interactions.

Journal of Chemical Ecology published new progress about 78-70-6. 78-70-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C10H18O, Recommanded Product: 3,7-Dimethylocta-1,6-dien-3-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Markov, Andrey V.; Sen’kova, Aleksandra V.; Popadyuk, Irina I.; Salomatina, Oksana V.; Logashenko, Evgeniya B.; Komarova, Nina I.; Ilyina, Anna A.; Salakhutdinov, Nariman F.; Zenkova, Marina A. published the artcile< Novel 3'-substituted-1',2',4'-oxadiazole derivatives of 18βH-glycyrrhetinic acid and their O-acylated amidoximes: synthesis and evaluation of antitumor and anti-inflammatory potential in vitro and in vivo>, Recommanded Product: N-Hydroxypropionimidamide, the main research area is oxadiazolyl oleanen preparation antitumor anti inflammatory agent SAR; acetoxy oxooleanen amidoxime preparation antitumor anti inflammatory agent SAR; 18βH-glycyrrhetinic acid; anti-inflammatory activity; antitumor activity; apoptosis; derivatives; heterocyclic moiety; metastasis; molecular docking; oxadiazole; target prediction.

A series of novel 18βH-glycyrrhetinic acid (GA) derivatives containing 3′-(alkyl/phenyl/pyridin(-2”, -3”, and -4”)-yl)-1′,2′,4′-oxadiazole moieties at the C-30 position were synthesized by condensation of triterpenoid’s carboxyl group with corresponding amidoximes and further cyclization. Screening of the cytotoxicity of novel GA derivatives on a panel of tumor cell lines showed that the 3-acetoxy triterpenoid intermediates-O-acylated amidoxime I [R = Me, Et, i-Pr, t-Bu, etc]display better solubility under bioassay conditions and more pronounced cytotoxicity compared to their 1′,2′,4′-oxadiazole analogs II [R = 2-pyridine, 3-pyridine, 4-pyridine] (median IC50 = 7.0 and 49.7μM, resp.). Subsequent replacement of the 3-acetoxy group by the hydroxyl group of pyridin(-2”, 3”, and -4”)-yl-1′,2′,4′-oxadiazole-bearing GA derivatives produced compounds III [R = 2-pyridine, 3-pyridine, 4-pyridine], showing the most pronounced selective toxicity toward tumor cells (median selectivity index (SI) > 12.1). Further detailed anal. of the antitumor activity of hit derivative III [R = 2-pyridine] revealed its marked proapoptotic activity and inhibitory effects on clonogenicity and motility of HeLa cervical carcinoma cells in vitro, and the metastatic growth of B16 melanoma in vivo. Addnl., the comprehensive in silico study revealed intermediate I [R = t-Bu], bearing the tert-Bu moiety in O-acylated amidoxime, as a potent anti-inflammatory candidate, which was able to effectively inhibit inflammatory response induced by IFNγ in macrophages in vitro and carrageenan in murine models in vivo, probably by primary interactions with active sites of MMP9, neutrophil elastase, and thrombin. Taken together, our findings provide a basis for a better understanding of the structure-activity relationship of 1′,2′,4′-oxadiazole-containing triterpenoids and reveal two hit mols. with pronounced antitumor III [R = 2-pyridine] and anti-inflammatory I [R = t-Bu] activities.

International Journal of Molecular Sciences published new progress about Amidoximes Role: PAC (Pharmacological Activity), RCT (Reactant), SPN (Synthetic Preparation), THU (Therapeutic Use), BIOL (Biological Study), RACT (Reactant or Reagent), PREP (Preparation), USES (Uses). 29335-36-2 belongs to class alcohols-buliding-blocks, and the molecular formula is C3H8N2O, Recommanded Product: N-Hydroxypropionimidamide.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Liu, Can; Shen, Ni; Shang, Rui published the artcile< Photocatalytic defluoroalkylation and hydrodefluorination of trifluoromethyls using o-phosphinophenolate>, Application In Synthesis of 627-27-0, the main research area is alkene aryl trifluoroacetamide phosphinophenolate catalyst defluoroalkylation hydrodefluorination; difluoro aryl alkyl amide preparation; trifluoroacetate alkene phosphinophenolate catalyst defluoroalkylation; alkyl difluoro ester preparation; alkenol trifluoromethyl arene phosphinophenolate catalyst defluoroalkylation; arenyl difluoroalkanol preparation.

Under visible light irradiation, o-phosphinophenolate functions as an easily accessible photoredox catalyst to activate trifluoromethyl groups in trifluoroacetamides, trifluoroacetates and trifluoromethyl (hetero)arenes to deliver corresponding difluoromethyl radicals. It works in relay with a thiol hydrogen atom transfer (HAT) catalyst to enable selective defluoroalkylation and hydrodefluorination. The reaction allowed for the facile synthesis of a broad scope of difluoromethylene-incorporated carbonyl and (hetero)aromatic compounds, which are valuable fluorinated intermediates of interest in the pharmaceutical industry. The ortho-diphenylphosphino substituent, which is believed to facilitate photoinduced electron transfer, plays an essential role in the redox reactivity of phenolate. In addition to trifluoromethyl groups, pentafluoroethyl groups could also be selectively defluoroalkylated.

Nature Communications published new progress about Alkenes Role: RCT (Reactant), RACT (Reactant or Reagent). 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, Application In Synthesis of 627-27-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Sheng, Yu-Jing; Su, Min; Xiao, Hang; Shi, Quan-Xi; Sun, Xiao-Li; Zhang, Ruliang; Bao, Hongli; Wan, Wen-Ming published the artcile< Barbier Hyperbranching Polymerization-Induced Emission from an AB-Type Monomer>, Application of C19H16O, the main research area is Barbier hyperbranching polymerization induced emission photophys property; barbier reaction; hyperbranching polymerization; luminescence; nonconjugated polymer; polymerization-induced emission.

Luminescent polymer materials have gained considerable research efforts in the past decades and are generally mol. designed by extending the π system of the polymer main chain or by incorporating chromophores into the polymer chain, which suffer from poor solubility, difficult synthesis, or multi-step procedures. Meanwhile, according to the step-growth polymerization theory, synthesis of hyperbranched polymers from an AB-type monomer is still challenging. Herein, we report a one-pot synthesis of nonconjugated luminescent hyperbranched polymer material via Barbier hyperbranching polymerization-induced emission (PIE) from an AB-type monomer. The key step in the realization of the hyperbranched polymer is bi-functionalization of a mono-functional group. Through a Barbier reaction between an organohalide and an ester group in one pot, bi-functionalization of mono-functional ester is realized through two-step nucleophilic additions, resulting in hyperbranched polytriphenylmethanols (HPTPM). Attributed to through-space conjugation and inter- and intramol. charge-transfer effects induced by polymer chain, nonconjugated HPTPMs are PIEgens, which are tunable by monomer structure and polymerization time. When all Ph groups are rotatable, HPTPM is aggregation-induced emission type PIEgen. Whereas, it is aggregation-caused quenching type PIEgen if some Ph groups are rotation forbidden. Further potential applications of PIEgen are in the fields of explosive detection and artificial light harvesting systems. This work, therefore, expands the monomer library and mol. design library of hyperbranched polymers through “”bi-functionalization of mono-functional group”” strategy, which eventually expands the preparation library of nonconjugated luminescent polymer materials through one-pot PIE from nonemissive monomer.

Chemistry – A European Journal published new progress about Aggregation-induced emission. 76-84-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C19H16O, Application of C19H16O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chinoy, Zoeisha S.; Bodineau, Clement; Favre, Camille; Moremen, Kelley W.; Duran, Raul V.; Friscourt, Frederic published the artcile< Selective Engineering of Linkage-Specific α2,6-N-Linked Sialoproteins Using Sydnone-Modified Sialic Acid Bioorthogonal Reporters>, Electric Literature of 5505-63-5, the main research area is sialoprotein engineering sydnone sialic acid bioorthogonal chem; click chemistry; enzymes; fluorescent probes; glycobiology; sialic acids.

The metabolic oligosaccharide engineering (MOE) strategy using unnatural sialic acids has recently enabled the visualization of the sialome in living systems. However, MOE only reports on global sialylation and dissected information regarding subsets of sialosides is missing. Described here is the synthesis and utilization of sialic acids modified with a sydnone reporter for the metabolic labeling of sialoconjugates. The positioning of the reporter on the sugar significantly altered its metabolic fate. Further in vitro enzymic assays revealed that the 9-modified neuraminic acid is preferentially accepted by the sialyltransferase ST6Gal-I over ST3Gal-IV, leading to the favored incorporation of the reporter into linkage-specific α2,6-N-linked sialoproteins. This sydnone sugar presents the possibility of investigating the roles of specific sialosides.

Angewandte Chemie, International Edition published new progress about Bioorthogonal reaction. 5505-63-5 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H14ClNO5, Electric Literature of 5505-63-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hu, Bowen; Zhang, Yuzhe; Yin, Geping; Chen, Dafa published the artcile< Half-sandwich ruthenium (II) complexes with bidentate NN ligands: active catalysts for synthesis of quinolines and pyrroles by acceptorless dehydrogenative cyclization>, COA of Formula: C7H9NO, the main research area is quinoline pyrrole preparation acceptorless dehydrogenative cyclization; half sandwich ruthenium complex bidentate ligand preparation.

Four (η6-p-cymene)Ru(II) complexes with bidentate NN ligands, (η6-p-cymene)Ru(C5H4N-C5H3N-OH), (η6-p-cymene)Ru(C5H4N-CH2-C5H4N), (η6-p-cymene)Ru(C5H4N-CH2-C5H3N-OH) and (η6-p-cymene)Ru(C5H4N-CH2-C5H3N-OCH3) were prepared These complexes were all characterized by 1H NMR, 13C NMR and elemental anal., and (η6-p-cymene)Ru(C5H4N-CH2-C5H4N) was further determined by single crystal crystallog. Complexes were treated as catalysts for cyclizations of amino alcs. with ketones, and (η6-p-cymene)Ru(C5H4N-CH2-C5H3N-OH) exhibited the highest activity. The cyclization reactions proceeded in toluene with 0.5 mol% catalyst loading, and a series of quinolines and pyrroles were synthesized.

Youji Huaxue published new progress about Amino alcohols Role: RCT (Reactant), RACT (Reactant or Reagent) (beta). 5344-90-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H9NO, COA of Formula: C7H9NO.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Armylisas, Abu Hassan N.; Fauzi, Siti H. M.; Mohd, Noor K.; Yeong, Shoot K.; Zainab, Idris; Azwadi, Che Sidik N. published the artcile< Excellent Properties of Dimer Fatty Acid Esters as Biolubricant Produced by Catalyst- and Solvent-Free Esterification>, Formula: C8H18O, the main research area is dimer fatty acid ester biolubricant catalyst solvent free esterification.

Currently most technologies available to produce esters require acid or base catalysts for esterification or transesterification reactions. Production of dimerate esters (DE) exhibiting potential as a biolubricant for low temperature applications using catalyst- and solvent-free approaches is presented in this article. Hydrogenated C36 dimer acid and alc. are reacted under the following conditions: dimer acid/alc. (1:4.5 molar ratio), 150-200 °C, 24 h, 3Å mol. sieve (15% weight/weight). The performances of four DE species-dibutyl, dihexyl, di-(2-ethylhexyl), and dioctyl dimerate-as lubricant base stocks are evaluated by kinematic viscosity, viscosity index, cloud and pour point (cold flow properties) as well as oxidative stability, and compared with com. synthetic lubricant base stock and DE, Radialube 7121. High viscosity indexes ranging between 129 and 138 are observed for the synthesized DEs, which are comparable with two com. base stock, polyalpha olefin (PAO), and polyolester (POE). Significantly low pour point, less than -42 °C, is observed for di-(2-ethylhexyl) dimerate attributed to the branching of the side chain. The DEs are categorized as ISO VG 68 based on their viscosity according to ISO 3448 classification and show potential as biolubricant with high viscosity index and excellent cold flow properties. Practical Applications: DFAE obtained have high potential to be used as lubricant base stock for equipment and machinery operating at extremely low temperature

European Journal of Lipid Science and Technology published new progress about Cloud point. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Formula: C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Amrina, Rosyada Amran; Furusawa, Go; Lau, Nyok-Sean published the artcile< Saccharobesus litoralis gen. nov., sp. nov., a novel alginate-degrading bacterium isolated from the surface of intertidal algal turf>, HPLC of Formula: 87-73-0, the main research area is Saccharobesus alginate degrading bacterium phospholipid glycolipid fatty acid; Alteromonadaceae; agar degradation; alginate.

A novel rod-shaped, Gram-stain-neg., strictly aerobic and alginate-degrading marine bacterium, designated CCB-QB4T, was isolated from a surface of algal turf collected from a coastal area of Penang, Malaysia. The cells showed motility by a lateral flagellum. The rod-shaped cells formed long chains end-to- end. Phylogenetic anal. based on the 16S rRNA gene sequence of strain CCB-QB4T showed 94.07, 92.69, 91.52 and 90.90% sequence similarity to Algibacillus agarilyticus RQJ05T, Catenovulum maritimum Q1T, Catenovulum agarivorans YM01T and Catenovulum sediminis D2T, resp. Strain CCB-QB4T formed a cluster with A. agarilyticus RQJ05T. Strain CCB-QB4T was catalase-neg., oxidase-pos., and degraded agar, alginate, and starch. Cell growth was observed at 15-40°C, at pH 7.0-10.0 and in the presence of 1-6% (w/v) NaCl and glucose. The major fatty acids were summed feature 3 (C16:1 ω7c/iso-C15:0 2-OH), C16:0 and C18:1 ω7c. The polar lipids were phosphatidylethanolamine, two unidentified aminolipids, two unidentified glycolipids, an unidentified phospholipid and unidentified lipid. The major respiratory quinone was ubiquinone-8. The genomic DNA G+C content was 46.7 mol%. Based on the phenotypic, chemotaxonomic and phylogenetic data, strain CCB-BQ4T represents a novel species in a new genus, for which the name Saccharobesus litoralis gen. nov., sp. nov. is proposed. The type strain is CCB-QB4T (=JCM 33513T=-MBL 5008T).

International Journal of Systematic and Evolutionary Microbiology published new progress about Algibacillus agarilyticus. 87-73-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H10O8, HPLC of Formula: 87-73-0.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hu, Fangzhi; Li, Xinyao; Ding, Zhanshuai; Wang, Liang; Ge, Chunyan; Xu, Lubin; Li, Shuai-Shuai published the artcile< Divergent Synthesis of [3,4]-Fused 3-Alkenyl-Oxindoles via Propargyl Alcohol-Triggered C(sp3)-H Functionalization>, Product Details of C4H8O, the main research area is hydroxy arylethynyl pyrrolidinyl indolinone nucleophile binaphthyldiyl hydrogenphosphate catalyst cyclization; aryl diazatetracyclo hexadeca tetraenone preparation regioselective cascade.

Developed a synthetic strategy for divergent synthesis of diverse types of [3,4]-seven- or six-membered ring-fused 3-alkenyl-oxindoles incorporating benzazepine and significant building blocks from propargyl alcs. via the cascade nucleophilic substitution/site-selective hydride transfer/cyclization process unprecedentedly. Also, a variety of nucleophiles, including H2O, were available for controllable construction of a wide range of conjugated alkenes, conjugated ketones and allyl alcs. encompassing natural products and pharmaceutical motifs with the utilization of 4-amine substituted isatins and widespread terminal alkyne-derived propargyl alcs. Furthermore, the synthetic utility of the methodol. and mechanistic studies also were well presented.

ACS Catalysis published new progress about Alcohols, lower Role: RCT (Reactant), RACT (Reactant or Reagent). 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, Product Details of C4H8O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Molla, Mosidur Rahaman; Das, Pradip; Guleria, Kanika; Subramanian, Ranga; Kumar, Amit; Thakur, Rima published the artcile< Cyanomethyl Ether as an Orthogonal Participating Group for Stereoselective Synthesis of 1,2-trans-β-O-Glycosides>, Application In Synthesis of 4064-06-6, the main research area is tetrazole glycoside cyclization azide cyanide glycoside preparation; disaccharide stereoselective glycosylation thioglycoside glycoside preparation protecting group cyanomethyl.

Stereoselective formation of glycosidic linkages has been the prime focus for contemporary carbohydrate chem. Herein, we report cyanomethyl (CNMe) ether as an efficient and effective participating orthogonal protecting group for the stereoselective synthesis of 1,2-trans-β-O-glycosides. The participating group facilitated good to high β-selective glycosylation with a broad range of electron-rich and electron-deficient glycosyl acceptors. Detailed exptl. and theor. studies reveal the involvement of CNMe ether in the formation of a six-membered imine-type cyclic intermediate for the observed stereoselectivity. Rapid incorporation and selective removal of the CNMe ether group in the presence of benzyl ether and isopropylidene acetal protection have also been reported here. The nitrile group provided an opportunity for the glyco-diversification through further derivatization.

Journal of Organic Chemistry published new progress about Cyclization. 4064-06-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C12H20O6, Application In Synthesis of 4064-06-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts