Month: December 2022

Xiao, Peng-Fei published the artcileDiscovery of dipeptidyl peptidase IV (DPP4) inhibitors based on a novel indole scaffold, Safety of 2-Chloro-4-methylphenylboronic acid, the publication is Chinese Chemical Letters (2014), 25(5), 673-676, database is CAplus.

Dipeptidyl peptidase IV (DPP4) inhibitors were proven in the treatment of type 2 diabetes. A series of novel indole compounds was synthesized that selectively inhibit the activity of DPP4 over dipeptidyl peptidase 9 DPP9 (>200 fold). It was further co-crystallized DPP4 with indole sulfonamide to confirm a proposed binding mode. Good metabolic stability of the indole compounds represented another pos. attribute for further development.

Chinese Chemical Letters published new progress about 145349-62-8. 145349-62-8 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Boronic Acids, name is 2-Chloro-4-methylphenylboronic acid, and the molecular formula is C9H10N2O, Safety of 2-Chloro-4-methylphenylboronic acid.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Wang, Tong published the artcilepH-controlled reversible deep-eutectic solvent based enzyme system for simultaneous extraction and in-situ separation of isoflavones from Pueraria lobata, HPLC of Formula: 23616-79-7, the publication is Separation and Purification Technology (2022), 120992, database is CAplus.

In this study, we developed an efficient and green pH-controlled reversible deep-eutectic solvents (DESs) based enzyme system for efficient extraction, transformation and in-situ separation of natural products from herbs. As a case study, seven isoflavones in the root of Pueraria lobata were selected as target compounds A series of DESs were firstly prepared and the extraction efficiency for target compounds with or without cellulase catalysis was investigated. We found that [N4444][Cl]:ethylene glycol (1:2) with cellulase addition show the highest extraction efficiency for isoflavones. More importantly, the phase behavior of [N4444][Cl]:ethylene glycol (1:2) based cellulase system was found to be pH-controlled. When pH is 5.0, the system is a homogeneous single-phase system, which is conducive to the extraction of natural products. When pH is 6.4, the system changes from the single-phase to the heterogeneous two-phase, to realize the in-situ separation of the compounds Therefore, by adjusting the pH of the system, the in-situ separation of isoflavones was successfully realized with high recovery yields. The pH-controlled DESs based enzyme-assisted extraction system overcomes the incompatibility between enzyme catalysis and conventional organic solvent in extraction, which could efficiently extract seven isoflavones from Pueraria lobata root.

Separation and Purification Technology published new progress about 23616-79-7. 23616-79-7 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst, name is N-Benzyl-N,N-dibutylbutan-1-aminium chloride, and the molecular formula is C7H6ClF3N2, HPLC of Formula: 23616-79-7.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Liu, Tian published the artcileA crystal structure-guided rational design switching non-carbohydrate inhibitors’ specificity between two β-GlcNAcase homologs, Product Details of C4H5ClN2S, the publication is Scientific Reports (2014), 6188, database is CAplus and MEDLINE.

Selective inhibition of function-specific β-GlcNAcase has great potential in terms of drug design and biol. research. The sym. bis-naphthalimide M-31850 was previously obtained by screening for specificity against human glycoconjugate-lytic β-GlcNAcase. Using protein-ligand co-crystallization and mol. docking, we designed an unsym. dyad of naphthalimide and thiadiazole, Q2, that changes naphthalimide specificity from against a human glycoconjugate-lytic β-GlcNAcase to against insect and bacterial chitinolytic β-GlcNAcases. The crystallog. and in silico studies reveal that the naphthalimide ring can be utilized to bind different parts of these enzyme homologs, providing a new starting point to design specific inhibitors. Moreover, Q2-induced closure of the substrate binding pocket is the structural basis for its 13-fold increment in inhibitory potency. Q2 is the first non-carbohydrate inhibitor against chitinolytic β-GlcNAcases. This study provides a useful example of structure-based rationally designed inhibitors as potential pharmaceuticals or pesticides.

Scientific Reports published new progress about 75341-23-0. 75341-23-0 belongs to chlorides-buliding-blocks, auxiliary class Thiadiazole,Chloride, name is 2-(Chloromethyl)-5-methyl-1,3,4-thiadiazole, and the molecular formula is C4H5ClN2S, Product Details of C4H5ClN2S.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Xiong, Yusheng published the artcileDiscovery of a novel glucagon receptor antagonist N-[(4-{(1S)-1-[3-(3, 5-dichlorophenyl)-5-(6-methoxynaphthalen-2-yl)-1H-pyrazol-1-yl]ethyl}phenyl)carbonyl]-β-alanine (MK-0893) for the treatment of type II diabetes, COA of Formula: C9H12BClO3, the publication is Journal of Medicinal Chemistry (2012), 55(13), 6137-6148, database is CAplus and MEDLINE.

A potent, selective glucagon receptor antagonist I was discovered by optimization of a previously identified lead. Compound I is a reversible and competitive antagonist with high binding affinity (IC₅₀ of 6.6 nM) and functional cAMP activity (IC₅₀ of 15.7 nM). It is selective for glucagon receptor relative to other family B GPCRs, showing IC₅₀ values of 1020 nM for GIPR, 9200 nM for PAC1, and >10000 nM for GLP-1R, VPAC1, and VPAC2. Compound I blunted glucagon-induced glucose elevation in hGCGR mice and rhesus monkeys. It also lowered ambient glucose levels in both acute and chronic mouse models: in hGCGR ob/ob mice it reduced glucose (AUC 0-6 h) by 32% and 39% at 3 and 10 mpk single doses, resp. In hGCGR mice on a high fat diet, compound I at 3, and 10 mpk po in feed lowered blood glucose levels by 89% and 94% at day 10, resp., relative to the difference between the vehicle control and lean hGCGR mice. On the basis of its favorable biol. and DMPK properties, compound I (MK-0893) was selected for further preclin. and clin. evaluations.

Journal of Medicinal Chemistry published new progress about 1256345-74-0. 1256345-74-0 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronic acid and ester, name is (3-Chloro-5-propoxyphenyl)boronic acid, and the molecular formula is C10H15ClO3S, COA of Formula: C9H12BClO3.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Huang, Boshi published the artcileVerifying the role of 3-hydroxy of 17-cyclopropylmethyl-4,5α-epoxy-3,14β-dihydroxy-6β-[(4′-pyridyl)carboxamido]morphinan derivatives via their binding affinity and selectivity profiles on opioid receptors, Application of 2-Chloroisonicotinic acid, the publication is Bioorganic Chemistry (2021), 104702, database is CAplus and MEDLINE.

In the present study, the role of 3-hydroxy group of a series of epoxymorphinan derivatives I (R¹ = H, OH; R² = Cl, Br, CN, Me, OMe) in their binding affinity and selectivity profiles toward the opioid receptors (ORs) has been investigated. It was found that the 3-hydroxy group was crucial for the binding affinity of these derivatives for all three ORs due to the fact that all the analogs I (R¹ = OH) exhibited significantly higher binding affinities compared to their counterpart 3-dehydroxy ones I (R¹ = H). Meanwhile most compounds carrying the 3-hydroxy group possessed similar selectivity profiles for the kappa opioid receptor over the mu opioid receptor as their corresponding 3-dehydroxy derivatives The [³⁵S]-GTPγS functional assay results indicated that the 3-hydroxy group of these epoxymorphinan derivatives I was important for maintaining their potency on the ORs with various effects. Further mol. modeling studies helped comprehend the remarkably different binding affinity and functional profiles between compound I (R¹ = H, R² = CN)(NCP) and its 3-dehydroxy analog I (R¹ = OH, R² = CN).

Bioorganic Chemistry published new progress about 6313-54-8. 6313-54-8 belongs to chlorides-buliding-blocks, auxiliary class Pyridine,Chloride,Carboxylic acid, name is 2-Chloroisonicotinic acid, and the molecular formula is C6H4ClNO2, Application of 2-Chloroisonicotinic acid.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Sureshkumar, Devarajulu published the artcileTandem aziridine ring opening-disulfide formation-reduction-Michael addition in one-pot mediated by tetrathiomolybdate, SDS of cas: 7080-50-4, the publication is Tetrahedron (2015), 71(39), 7267-7281, database is CAplus.

A detailed study of tetrathiomolybdate mediated tandem regio- and stereoselective ring opening of aziridine, disulfide formation, reduction of disulfide bond and Michael reaction in a one-pot operation is reported. This constitutes four reactions that take place in one-pot operation. In the reaction of [BnEt₃N]₄MoS₄ with an aziridine derived from cyclohexene and in the absence of Michael acceptor intermediates sulfonamidodisulfide and sulfonamidothiol were isolated and fully characterized. It has also been shown that it is possible to carry out selective opening of the aziridine ring in the presence of an epoxide. By incorporating a suitable Michael acceptor as part of the substrate, intramol. 1,4-addition could be performed, to achieve the synthesis of sulfur containing acyclic, cyclic amino acid ester derivatives and thia-bicyclo[3.3.1]nonane derivatives in good yields.

Tetrahedron published new progress about 7080-50-4. 7080-50-4 belongs to chlorides-buliding-blocks, auxiliary class Halogenation Reagent,Inhibitor, name is Sodium chloro(tosyl)amide trihydrate, and the molecular formula is C4H11NO, SDS of cas: 7080-50-4.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Pryyma, Alla published the artcileRapid, high-yielding solid-phase synthesis of cathepsin-B cleavable linkers for targeted cancer therapeutics, Recommanded Product: 2-Chlorotrityl chloride, the publication is Bioconjugate Chemistry (2020), 31(12), 2685-2690, database is CAplus and MEDLINE.

Antibody-drug conjugates (ADCs) constitute an emerging class of anticancer agents that deliver potent payloads selectively to tumors while avoiding systemic toxicity associated with conventional chemotherapeutics. Critical to ADC development is a serum-stable linker designed to decompose inside targeted cells thereby releasing the toxic payload. A protease-cleavable linker comprising a valine-citrulline (Val-Cit) motif has been successfully incorporated into three FDA-approved ADCs and is found in numerous preclin. candidates. Herein, we present a high-yielding and facile synthetic strategy for a Val-Cit linker that avoids extensive protecting group manipulation and laborious chromatog. associated with previous syntheses and provides yields that are up to 10-fold higher than by standard methods. This method is easily scalable and takes advantage of cost-effective coupling reagents and high loading 2-chlorotrityl chloride (2-CTC) resin. Modularity allows for introduction of various conjugation handles in final stages of the synthesis. Facile access to such analogs serves to expand the repertoire of available enzymically cleavable linkers for ADC generation. This methodol. empowers a robust and facile library generation and future exploration into linker analogs containing unnatural amino acids as a selectivity tuning tool.

Bioconjugate Chemistry published new progress about 42074-68-0. 42074-68-0 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Benzyl chloride,Benzene, name is 2-Chlorotrityl chloride, and the molecular formula is C19H14Cl2, Recommanded Product: 2-Chlorotrityl chloride.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Yakovleva, A. M. published the artcileEffect of new synthetic proparations derived from quaternary ammonium salts and phosphoranes on development and survival of Trichocephalus trichiurus eggs, Recommanded Product: N1,N10-Bis(2-((2-isopropyl-5-methylcyclohexyl)oxy)-2-oxoethyl)-N1,N1,N10,N10-tetramethyldecane-1,10-diaminium chloride, the publication is Paraziti, Parazitozi ta Shlyakhi Ikh Likvidatsii (1973), 165-7, database is CAplus.

When tested in 1% solutions on T. trichiurus eggs, isolated from human feces, quaternary ammonium salts, including ethonium [24771-49-1] and decamethoxin [38146-42-8] showed ovicidal activity. Dimethylformamide solutions of 3 triphenylphosphonium salts were also very effective against T. trichiurus eggs.

Paraziti, Parazitozi ta Shlyakhi Ikh Likvidatsii published new progress about 38146-42-8. 38146-42-8 belongs to chlorides-buliding-blocks, auxiliary class Achiral Phase-Transfer Catalysts, name is N1,N10-Bis(2-((2-isopropyl-5-methylcyclohexyl)oxy)-2-oxoethyl)-N1,N1,N10,N10-tetramethyldecane-1,10-diaminium chloride, and the molecular formula is C28H18O4, Recommanded Product: N1,N10-Bis(2-((2-isopropyl-5-methylcyclohexyl)oxy)-2-oxoethyl)-N1,N1,N10,N10-tetramethyldecane-1,10-diaminium chloride.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Marciniec, B. published the artcileCatalysis of hydrosilylation. Part XVIII. Pt(PPh₃)₂(CH₂:CH₂) – a versatile catalyst for hydrosilylation of olefins, Synthetic Route of 14799-93-0, the publication is Applied Organometallic Chemistry (1990), 4(1), 27-34, database is CAplus.

Pt(PPh₃)₂(CH₂:CH₂) appeared to be a versatile catalyst in hydrosilylation of alkenes (with 5-22 C atoms) as well as of functionalized alkenes such as allyl chloride, allylamine, allyl methacrylate and vinylsilanes. In comparison with a well-known Speier catalyst or with Pt(PPh₃)₄, this complex is characterized by a very high effectiveness (activity and selectivity) and relative resistance to oxygenation and it may be applied in recycling runs with a minor induction period. The catalytic processes examined are of great industrial importance since they lead to a synthesis of alkylsilanes, disilylethanes and silane coupling agents.

Applied Organometallic Chemistry published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, Synthetic Route of 14799-93-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Jangid, D. K. published the artcileAn efficient synthesis of 2-aminobenzothiazole and its derivatives in ionic liquids, Related Products of chlorides-buliding-blocks, the publication is International Journal of Pharmaceutical Sciences and Research (2017), 8(7), 2960-2964, database is CAplus.

The synthesis of 2-aminobenzothiazole derivatives I [R = H, MeO; R¹ = Cl, NO₂; R² = NH₂, NHEt, N=CHPh] were carried out from substituted phenyl-thiourea which was synthesized by substituted aniline in ionic liquid (1-butyl-3-methylimidazolium)bisulfate ([BMIM]⁺ [HSO₄]^–), (1-butyl-3-methylimidazolium)tetrafluoroborate ([BMIM]⁺ [BF₄]^–) and (1-butyl-3-methylimidazolium)hexafluorophosphate ([BMIM]⁺ [PF₆]^–). Ionic lquids were green alternate of volatile organic solvents, beneficiary environmentally and economically. The reactivity, reaction rate and yield were enhanced by using ionic lquids and the products were recovered by simple filtration. The characterization of synthesized compounds was done by elemental and spectral anal.

International Journal of Pharmaceutical Sciences and Research published new progress about 3696-23-9. 3696-23-9 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Thiourea,Amine,Benzene,Amide, name is 1-(4-Chlorophenyl)thiourea, and the molecular formula is C7H7ClN2S, Related Products of chlorides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics