Category: chlorides-buliding-blocks

Zhu, Chen published the artcileMild and Rapid Hydroxylation of Aryl/Heteroaryl Boronic Acids and Boronate Esters with N-Oxides, Product Details of C7H8BClO2, the publication is Organic Letters (2012), 14(13), 3494-3497, database is CAplus and MEDLINE.

Aryl and heteroaryl boronic acids and boronate esters are rapidly, often within minutes, transformed into the corresponding phenols by N-oxides in an open flask at ambient temperature This transformation has broad compatibility with a variety of functional groups.

Organic Letters published new progress about 209919-30-2. 209919-30-2 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Boronic Acids,Boronic acid and ester, name is 4-Chloro-2-methylphenylboronic acid, and the molecular formula is C6H10F3NO, Product Details of C7H8BClO2.

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

Shen, Chong published the artcileCatalytic Asymmetric Umpolung Allylation/2-Aza-Cope Rearrangement for the Construction of α-Tetrasubstituted α-Trifluoromethyl Homoallylic Amines, COA of Formula: C8H4ClF3O, the publication is Organic Letters (2019), 21(17), 6940-6945, database is CAplus and MEDLINE.

A general protocol for the preparation of enantioenriched α-tetrasubstituted α-trifluoromethyl homoallylic amines (R)-F₃CCR(NH₂)CH₂CH:CHR¹ (R = Ph, 4-ClC₆H₄, 2-naphthyl, etc., R¹ = Ph, 3-MeC₆H₄, 2-thienyl, etc.) and (S)-F₃CCH(NH₂)CH₂CH:CHR² (R² = Ph, 3-MeC₆H₄, 2-furyl, 6-quinolinyl, etc.) is disclosed. Despite the significant challenge in stereoselectivity control, Ir-catalyzed asym. cascade umpolung allylation/2-aza-Cope rearrangement of trifluoromethylated fluorenone imines with allylic carbonates was realized with excellent efficiency and remarkable stereoselectivity. These were enabled by the suitable protective imino moiety and an unexpectedly exclusive E-geometrical imine of the allylation intermediate. This methodol. is also applicable to facile access to chiral α-trisubstituted α-trifluoromethyl homoallylic amines in similarly high yield and stereoselectivity.

Organic Letters published new progress about 5860-95-7. 5860-95-7 belongs to chlorides-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Chloride,Benzene,Ketone, name is 1-(2-Chlorophenyl)-2,2,2-trifluoroethanone, and the molecular formula is C13H9FO2, COA of Formula: C8H4ClF3O.

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

Wang, Shuai published the artcileStructure-Based Design, Synthesis, and Biological Evaluation of New Triazolo[1,5-a]Pyrimidine Derivatives as Highly Potent and Orally Active ABCB1 Modulators, Computed Properties of 939-99-1, the publication is Journal of Medicinal Chemistry (2020), 63(24), 15979-15996, database is CAplus and MEDLINE.

ABCB1 is a promising therapeutic target for overcoming multidrug resistance (MDR). In this work, we reported the structure-based design of triazolo[1,5-a]pyrimidines as new ABCB1 modulators, of which WS-691 significantly increased sensitization of ABCB1-overexpressed SW620/Ad300 cells to paclitaxel (PTX) (IC₅₀ = 22.02 nM). Mechanistic studies indicated that WS-691 significantly increased the intracellular concentration of PTX and [³H]-PTX while decreasing the efflux of [³H]-PTX in SW620/Ad300 cells by inhibiting the efflux function of ABCB1. The cellular thermal shift assay suggested that WS-691 could stabilize ABCB1 by directly binding to ABCB1. WS-691 could stimulate the activity of ABCB1 ATPase but had almost no inhibitory activity against CYP3A4. Importantly, WS-691 increased the sensitivity of SW620/Ad300 cells to PTX in vivo without observed toxicity. Collectively, WS-691(I) is a highly potent and orally active ABCB1 modulator capable of overcoming MDR. The triazolo[1,5-a]pyrimidine may be a promising scaffold for developing more potent ABCB1 modulators.

Journal of Medicinal Chemistry published new progress about 939-99-1. 939-99-1 belongs to chlorides-buliding-blocks, auxiliary class Fluoride,Chloride,Benzyl chloride,Benzene, name is 1-(Chloromethyl)-4-(trifluoromethyl)benzene, and the molecular formula is C13H10O3, Computed Properties of 939-99-1.

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

Ma, Liangwei published the artcilePhoto-controlled fluorescence on/off switching of a pseudo[3]rotaxane between an AIE-active pillar[5]arene host and a photochromic bithienylethene guest, Synthetic Route of 219537-97-0, the publication is Chemical Communications (Cambridge, United Kingdom) (2018), 54(19), 2405-2408, database is CAplus and MEDLINE.

A fluorescence photo-switch was constructed based on a host-guest pseudo[3]rotaxane between an AIE-active pillar[5]arene host bearing tetra-Ph ethylene moieties and a photo-responsive dithienylethylene guest containing two cyano-triazole branches. Its fluorescence on/off switching could be controlled by the photochromism reaction of the dithienylethylene unit.

Chemical Communications (Cambridge, United Kingdom) published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, Synthetic Route of 219537-97-0.

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

Almasi, Miroslav published the artcileA novel approach to achieve molecular switching in solid-state driving by thermal treatment: A photochromic zinc-coordination polymer, SDS of cas: 219537-97-0, the publication is Inorganica Chimica Acta (2020), 119879, database is CAplus.

The mol. switching of complexes based on diarylethenes in a solid-state is their most frequently studied property. This switching becomes possible when the active carbon atoms acquire a suitable interat. separation in the mol. Even if the structural anal. may suggest conditions disfavoring the occurrence of such switching, it may still be enabled by post-synthetic modification of the sample, like dehydration. In the present study, a novel one-dimensional coordination polymer with composition {[Zn(μ₃-HA)(H₂O)₃]·H₂O}_n was prepared and characterized. In its solid state, however, its thiophene rings were arranged in the non-switchable conformation yielding a C···C separation 4.148(6) Å between the active carbon atoms. After fully dehydrating the sample, this interat. separation decreased to 3.814 Å, making it susceptible to photochromism by UV radiation.

Inorganica Chimica Acta published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, SDS of cas: 219537-97-0.

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

Christianson, D. D. published the artcileChromatography of quaternary nitrogen compounds on buffered cation-exchange resins, Application In Synthesis of 6249-56-5, the publication is Journal of Chromatography (1963), 432-8, database is CAplus and MEDLINE.

Betaines and other naturally occurring quaternary N compounds were detected and determined by a modification of the method of W., et al. (CA 54, 18198b) based on ultraviolet absorbance by their periodides. Columns used were uniformly sized, pulverized, sulfonated polystyrene resin, with Na citrate buffers of pH 2.2, 3.25, and 4.25 for elution. Better separation of betaine, stachydrine, choline, trigoneltine, N-methylnicotinamide, and carnitine was obtained with these eluents than with HCl because of greater differences in degrees of ionization in the buffer system. Corn-grain extracts were separated in 2 days into trigonelline, choline, and an unknown substance yielding a periodide derivative

Journal of Chromatography published new progress about 6249-56-5. 6249-56-5 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst,Inhibitor,Natural product, name is 3-Carboxy-N,N,N-trimethylpropan-1-aminium chloride, and the molecular formula is C7H16ClNO2, Application In Synthesis of 6249-56-5.

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

Christianson, Donald D. published the artcileSeparation and determination of quaternary nitrogen compounds and other nitrogenous substances by ion-exchange chromatography. Application to analysis of corn extracts, HPLC of Formula: 6249-56-5, the publication is Anal. Chem. (1960), 874-8, database is CAplus.

cf. preceding abstract A known mixture of quaternary N compounds (q.n.c.) (including carnitine, choline, betaine, trigonelline, thiamine, γ-butyrobetaine, and stachydrine) and certain related amines and amino acids were separated on a column of the acid form of Dowex-50W with increasing concentrations of aqueous HCl as the eluant (CA 47, 11348i). Recovery was quant. for all q.n.c. except N-methylnicotinamide and ergothioneine. The procedure was applied to an aqueous concentrate from a 80% EtOH extraction of whole corn grain. From this were characterized and determined 3 of q.n.c., 16 amino acids and amides, and one purine. In order of decreasing amounts: asparagine, choline, alanine, and γ-aminobutyric acid were the major free N compounds found. Two of the substances, if not others, originally present in the corn extract were altered during the separation process by acid hydrolysis. It is suggested that this separation technique can be used to fractionate as little as 300 γ of each q.n.c. for routine analysis.

Anal. Chem. published new progress about 6249-56-5. 6249-56-5 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst,Inhibitor,Natural product, name is 3-Carboxy-N,N,N-trimethylpropan-1-aminium chloride, and the molecular formula is C7H16ClNO2, HPLC of Formula: 6249-56-5.

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

Subasinghe, Nalin L. published the artcileA novel series of pyrazolylpiperidine N-type calcium channel blockers, HPLC of Formula: 871332-95-5, the publication is Bioorganic & Medicinal Chemistry Letters (2012), 22(12), 4080-4083, database is CAplus and MEDLINE.

Selective blockers of the N-type calcium channel have proven to be effective in animal models of chronic pain. However, even though intrathecally delivered synthetic ω-conotoxin MVIIA from Conus magnus (ziconotide [Prialt]) has been approved for the treatment of chronic pain in humans, its mode of delivery and narrow therapeutic window have limited its usefulness. Therefore, the identification of orally active, small-mol. N-type calcium channel blockers would represent a significant advancement in the treatment of chronic pain. A novel series of pyrazole-based N-type calcium channel blockers was identified by structural modification of a high-throughput screening hit and further optimized to improve potency and metabolic stability. In vivo efficacy in rat models of inflammatory and neuropathic pain was demonstrated by a representative compound from this series.

Bioorganic & Medicinal Chemistry Letters published new progress about 871332-95-5. 871332-95-5 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Nitrile,Boronic acid and ester,Benzene,Boronic Acids,Boronic acid and ester, name is (4-Chloro-3-cyanophenyl)boronic acid, and the molecular formula is C5H11NO2S, HPLC of Formula: 871332-95-5.

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

Kemper, Jerome M. published the artcileQuaternary Amines As Nitrosamine Precursors: A Role for Consumer Products?, Related Products of chlorides-buliding-blocks, the publication is Environmental Science & Technology (2010), 44(4), 1224-1231, database is CAplus and MEDLINE.

Nitrosamine formation has been associated with wastewater-impacted waters, but specific precursors within wastewater effluents have not been identified. Experiments indicated that nitrosamines form in low yields from quaternary amines, and that the nitrosamines form from the quaternary amines themselves, not just lower order amine impurities. Polymeric and benzylated quaternary amines were more potent precursors than monomeric quaternary alkylamines. Pretreatment of quaternary amines with ozone or free Cl, which deactivate lower order amine impurities, did not significantly reduce nitrosamine formation. The nitrosamine formation pathway is unclear but experiments indicated that transformation of quaternary amines to lower order amine precursors via Hofmann elimination was not involved. Experiments suggest that the pathway may involve quaternary amine degradation by amidogen or chloramino radicals formed from chloramines. Quaternary amines are significant constituents of consumer products, including shampoos, detergents, and fabric softeners. Although quaternary amines may be removed by sedimentation during wastewater treatment, their importance should be evaluated on a case-by-case basis. The high loadings from consumer products may enable the portion not removed to serve as precursors.

Environmental Science & 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 C19H34ClN, Related Products of chlorides-buliding-blocks.

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

Pieroni, Marco published the artcileDesign, synthesis and investigation on the structure-activity relationships of N-substituted 2-aminothiazole derivatives as antitubercular agents, Name: 1-(4-Chlorophenyl)thiourea, the publication is European Journal of Medicinal Chemistry (2014), 26-34, database is CAplus and MEDLINE.

Tuberculosis (TB) is one of the deadliest infectious diseases of all times, and its recent resurgence is a supreme matter of concern. Co-infection with HIV and, in particular, the continuous isolation of new resistant strains, makes the discovery of novel anti-TB agents a strategic priority. The research of novel agents should be driven by the accessibility of the synthetic procedure and, in particular, by the lack of cross-resistance with the drugs already marketed. Moreover, in order to shorten the duration of the therapy, and therefore decrease the rate of resistance, these mols. should be active also against the nonreplicating persistent form (NRP-TB) of the infection. The availability of an inhouse small library of compounds prompted us to investigate their anti-TB activity. Two compounds, embodying a 2-aminothiazole scaffold, were found to possess a certain inhibitory activity toward Mycobacterium tuberculosis H₃₇Rv, and therefore a medicinal chem. campaign was initiated in order to increase the activity of the hit compounds and, especially, construct a plausible body of structure-activity relationships. The potency of the hit compound was successfully improved, and, much more importantly, some of the mols. synthesized were found to be active toward the persistent phenotype, and, also, toward a panel of resistant strains. These findings encourage further investigations around this interesting antitubercular chemotype.

European Journal of Medicinal Chemistry 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, Name: 1-(4-Chlorophenyl)thiourea.

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