Month: December 2022

Jansa, Josef published the artcileImidazo[1,2-c]pyrimidin-5(6H)-one inhibitors of CDK2: Synthesis, kinase inhibition and co-crystal structure, Recommanded Product: 2-Chloro-4-hydroxyphenylboronic acid, the publication is European Journal of Medicinal Chemistry (2021), 113309, database is CAplus and MEDLINE.

Pharmacol. inhibition of cyclin-dependent kinases has emerged as a possible treatment option for various cancer types. Authors recently identified substituted imidazo[1,2-c]pyrimidin-5(6H)-ones as inhibitors of cyclin-dependent kinase 2 (CDK2). Here, the synthesis of derivatives modified at positions 2, 3, 6 or 8 prepared using Suzuki-Miyaura cross-coupling, halogenation, Dimroth-type rearrangement and alkylation as the main synthetic methods was reported. The compounds displayed micro- to submicromolar inhibition of CDK2/cyclin E activity. Binding of the most potent compound I to CDK2 was determined using isothermal titration calorimetry. The co-crystal structure of I in complex with fully active CDK2 was solved, revealing the binding mode of I in the ATP pocket and a hydrogen bonding interaction with hinge region residue Leu83. Evaluation against leukemia cell lines revealed low cytotoxicity, which is in line with the high selectivity towards CDK2. This study demonstrates that substituted imidazo[1,2-c]pyrimidines can be exploited for future kinase inhibitor development.

European Journal of Medicinal Chemistry published new progress about 766549-26-2. 766549-26-2 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Phenol,Boronic Acids,Boronic acid and ester, name is 2-Chloro-4-hydroxyphenylboronic acid, and the molecular formula is C6H6BClO3, Recommanded Product: 2-Chloro-4-hydroxyphenylboronic acid.

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

Longwitz, Lars published the artcileOrganocatalytic Chlorination of Alcohols by P(III)/P(V) Redox Cycling, Synthetic Route of 939-99-1, the publication is Journal of Organic Chemistry (2019), 84(12), 7863-7870, database is CAplus and MEDLINE.

A catalytic system for the chlorination of alcs. under Appel conditions was developed. Benzotrichloride was used as a cheap and readily available chlorinating agent in combination with trioctylphosphine as the catalyst and phenylsilane as the terminal reductant. The reaction has several advantages over other variants of the Appel reaction, e.g., no addnl. solvent is required and the phosphine reagent was used only in catalytic amounts In total, 27 different primary, secondary, and tertiary alkyl chlorides were synthesized in yields up to 95%. Under optimized conditions, it was also possible to convert epoxides and an oxetane to the dichlorinated products.

Journal of Organic 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 C8H6ClF3, Synthetic Route of 939-99-1.

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

Cartwright, N. J. published the artcileSynthesis of γ-resorcylic acid (2,6-dihydroxybenzoic acid), HPLC of Formula: 36335-47-4, the publication is Journal of the Chemical Society (1952), 3499-502, database is CAplus.

Details are given of the preparation of 2,6-(MeO)₂C₆H₃CO₂H (I) in 14.8% yield from m-C₆H₄(NO₂)₂, 125 g. I and 400 g. AlCl₃ in 3.5 l. C₆H₆, refluxed 2 hrs., give 95-8% 2,6-(HO)₂C₆H₃CO₂H (II), m. 160-3° (decomposition); some decarboxylation occurs in boiling PhMe and, to a smaller extent, in boiling H₂O. 2,6-(HO)₂C₆H₃Ac (III) (133 g.) with Me₂SO₄ and aqueous NaOH gives 127 g. 2,6-(MeO)₂C₆H₃Ac (IV); 100 g. III with MeI and K₂CO₃ in Me₂CO (refluxed 12 hrs.) gives 95 g. IV. Oxidation of IV with Na-OCl at 85° (1.5 hrs.) gives 97% I; if the excess NaOCl is not removed before acidification, there results some 3-chloro-2,6-dimethoxybenzoic acid (V), m. 132°; 2 g. V and AlCl₃ in C₆H₆, refluxed 4 hrs., give 1.65 g. 3-chloro-2,6-dihydroxybenzoic acid, m. 193°, blue color with FeCl₃. 2,6-(HO)₂C₆H₃Me (50 g.) in NaOH, treated with Me₂SO₄ and heated 2 hrs. on the water bath, gives 57 g. 2,6-(MeO)₂C₆H₃Me; oxidation with KMnO₄ (1 hr. at 80°) gives 73% I. The preparation of II in 51% yield from 1.58 g. resorcinol bis(tetrahydro-2-pyranyl) ether and BuLi by the method of Parham and Anderson (C.A. 43, 2203h) is reported.

Journal of the Chemical Society published new progress about 36335-47-4. 36335-47-4 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Carboxylic acid,Benzene,Ether, name is 3-Chloro-2,6-dimethoxybenzoic acid, and the molecular formula is C9H9ClO4, HPLC of Formula: 36335-47-4.

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

Raddatz, Peter published the artcileSubstrate analog renin inhibitors containing replacements of histidine in P₂ or isosteres of the amide bond between P₃ and P₂ sites, Related Products of chlorides-buliding-blocks, the publication is Journal of Medicinal Chemistry (1991), 34(11), 3267-80, database is CAplus and MEDLINE.

Title analogs, e.g. I [Boc = Me₃CO₂C; X = Gly, β-Ala, NH(CH₂)₃CO, Ala], II, and III [X¹ = COCH₂CH₂CO, (S)-CH(OH)CH₂CH₂CO, (R)-CH(OH)CH₂CH₂CO, COCH₂SCH₂CO, (S)-CH(OH)CH₂SCH₂CO, (R)-CH(OH)CH₂SCH₂CO, COCH₂SOCH₂CO, COCH₂SO₂CH₂CO], were prepared as renin inhibitors. Oral activity was achieved by incorporation of polar functionalities at the N-terminus of β-alanine-containing tetrapeptides.

Journal of Medicinal Chemistry 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, Related Products of chlorides-buliding-blocks.

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

Johnston, Brandon M. published the artcileThe effect of comb architecture on complex coacervation, SDS of cas: 42074-68-0, the publication is Organic & Biomolecular Chemistry (2017), 15(36), 7630-7642, database is CAplus and MEDLINE.

Complex coacervation is a widely utilized technique for effecting phase separation, though predictive understanding of mol.-level details remains underdeveloped. Here, we couple coarse-grained Monte Carlo simulations with exptl. efforts using a polypeptide-based model system to investigate how a comb-like architecture affects complex coacervation and coacervate stability. Specifically, the phase separation behavior of linear polycation-linear polyanion pairs was compared to that of comb polycation-linear polyanion and comb polycation-comb polyanion pairs. The comb architecture was found to mitigate cooperative interactions between oppositely charged polymers, as no discernible phase separation was observed for comb-comb pairs and complex coacervation of linear-linear pairs yielded stable coacervates at higher salt concentration than linear-comb pairs. This behavior was attributed to differences in counterion release by linear vs. comb polymers during polyelectrolyte complexation. Addnl., the comb polycation formed coacervates with both stereoregular poly(L-glutamate) and racemic poly(D,L-glutamate), whereas the linear polycation formed coacervates only with the racemic polyanion. In contrast, solid precipitates were obtained from mixtures of stereoregular poly(L-lysine) and poly(L-glutamate). Moreover, the formation of coacervates from cationic comb polymers incorporating up to ∼90% pendant zwitterionic groups demonstrated the potential for inclusion of comonomers to modulate the hydrophilicity and/or other properties of a coacervate-forming polymer. These results provide the first detailed investigation into the role of polymer architecture on complex coacervation using a chem. and architecturally well-defined model system, and highlight the need for addnl. research on this topic.

Organic & Biomolecular 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, SDS of cas: 42074-68-0.

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

Niswender, Colleen M. published the artcileContext-dependent pharmacology exhibited by negative allosteric modulators of metabotropic glutamate receptor, COA of Formula: C11H7ClFNO3, the publication is Molecular Pharmacology (2010), 77(3), 459-468, database is CAplus and MEDLINE.

Phenotypic studies of mice lacking metabotropic glutamate receptor subtype 7 (mGluR7) suggest that antagonists of this receptor may be promising for the treatment of central nervous system disorders such as anxiety and depression. Suzuki et al. recently reported the in vitro characterization of a novel mGluR7 antagonist called 6-(4-methoxyphenyl)-5-methyl-3-(4-pyridinyl)-isoxazolo[4,5-c]pyridin-4(5H)-one (MMPIP), which noncompetitively inhibited the activity of orthosteric and allosteric agonists at mGluR7. We describe that MMPIP acts as a noncompetitive antagonist in calcium mobilization assays in cells coexpressing mGluR7 and the promiscuous G protein Gα₁₅. Assessment of the activity of a small library of MMPIP-derived compounds using this assay reveals that, despite similar potencies, compounds exhibit differences in neg. cooperativity for agonist-mediated calcium mobilization. Examination of the inhibitory activity of MMPIP and analogs using endogenous G_i/o-coupled assay readouts indicates that the pharmacol. of these ligands seems to be context-dependent, and MMPIP exhibits differences in neg. cooperativity in certain cellular backgrounds. Electrophysiol. studies reveal that, in contrast to the orthosteric antagonist (2S)-2-amino-2-[(1S,2S)-2-carboxyclycloprop-1-yl]-3-(xanth-9-yl) propanoic acid (LY341495), MMPIP is unable to block agonist-mediated responses at the Schaffer collateral-CA1 synapse, a location at which neurotransmission has been shown to be modulated by mGluR7 activity. Thus, MMPIP and related compounds differentially inhibit coupling of mGluR7 in different cellular backgrounds and may not antagonize the coupling of this receptor to native G_i/o signaling pathways in all cellular contexts. The pharmacol. of this compound represents a striking example of the potential for context-dependent blockade of receptor responses by neg. allosteric modulators.

Molecular Pharmacology published new progress about 3919-74-2. 3919-74-2 belongs to chlorides-buliding-blocks, auxiliary class Isoxazole,Fluoride,Chloride,Carboxylic acid,Benzene, name is 3-(2-Chloro-6-fluorophenyl)-5-methylisoxazole-4-carboxylic acid, and the molecular formula is C11H7ClFNO3, COA of Formula: C11H7ClFNO3.

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

Ma, Shaomin published the artcileHydrophobic deep eutectic solvent-based ultrasonic-assisted liquid-liquid micro-extraction combined with HPLC-FLD for diphenylamine determination in fruit, Product Details of C19H34ClN, the publication is Food Additives & Contaminants, Part A (2021), 38(2), 339-349, database is CAplus and MEDLINE.

In this paper, novel high extraction efficiency hydrophobic eutectic solvents (DESs), n-octanoic acid as a hydrogen bond donor (HBD) and menthol as a hydrogen bond acceptor (HBA), were selected from five hydrophobic DESs to extract trace diphenylamine (DPA) in fruits apple, pear and orange under ultrasonic-assisted liquid-liquid micro-extraction (UA-LLME) technol. before high-performance liquid chromatog. (HPLC) anal. Working parameters such as the DESs type, molar ratio, extractant volume, and ultrasonic time of the LLME hydrophobic DESs technol. were optimized. Average recoveries between 96% and 108% were obtained on actual samples. This method gave lower detection limit (LOD) than other existing methods due to combining the high-efficiency extraction of hydrophobic DES and high sensitivity of fluorescence detector. This method was sensitive and eco-friendly, and can be used for the determination of trace components in fruits.

Food Additives & Contaminants, Part A 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, Product Details of C19H34ClN.

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

Zou, Qi published the artcileNew photochromic chemosensors for Hg²⁺ and F^–, SDS of cas: 219537-97-0, the publication is Tetrahedron (2011), 67(5), 915-921, database is CAplus.

Two new chemosensors (1a and 1b) based on photochromic dithienylcyclopentene were designed and synthesized, and their spectral behaviors toward various metal ions and anions were studied. Compounds show excellent optical properties and distinguish Hg²⁺ and F^– in CH₃CN. Job’s plot reveals that the presence of Hg²⁺ induces the formation of a 1:1 complex between 1a or 1b and Hg²⁺. From the spectral responses and ¹H NMR anal., the deprotonation of the thioamide protons is proposed to explain the sensing mechanism for 1a and 1b toward F^–. 1A and 1b exhibit ring-opening and ring-closing photoisomerization with UV-visible light irradiation Also, their photochromic properties can be modulated by Hg²⁺ and F^– ions. Also, 1a and 1b in photostationary states become promising sensors for Hg²⁺ and F^– with high selectivity.

Tetrahedron 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 C14H17BClNO2, SDS of cas: 219537-97-0.

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

Kormos, Chad M. published the artcileDiscovery of N-{4-[(3-Hydroxyphenyl)-3-methylpiperazin-1-yl]methyl-2-methylpropyl}-4-phenoxybenzamide Analogues as Selective Kappa Opioid Receptor Antagonists, Computed Properties of 33697-81-3, the publication is Journal of Medicinal Chemistry (2013), 56(11), 4551-4567, database is CAplus and MEDLINE.

There is continuing interest in the discovery and development of new κ opioid receptor antagonists. We recently reported that N-substituted 3-methyl-4-(3-hydroxyphenyl)piperazines were a new class of opioid receptor antagonists. In this study, we report the syntheses of two piperazine JDTic-like analogs. Evaluation of the two compounds in an in vitro [³⁵S]GTPγS binding assay showed that neither compound showed the high potency and κ opioid receptor selectivity of JDTic. A library of compounds was synthesized by amidation of compound I with com. available arylcarboxylic acids and tested for their ability to inhibit [³⁵S]GTPγS binding stimulated by the selective κ opioid agonist U69,593. These studies led to N-[(1S)-1-{[(3S)-4-(3-hydroxyphenyl)-3-methylpiperazin-1-yl]methyl}-2-methylpropyl]-4-phenoxybenzamide (II), a compound that showed good κ opioid receptor antagonist properties. An SAR study based on II provided 28 novel analogs. Evaluation of these 28 compounds in the [³⁵S]GTPγS binding assay showed that several of the analogs were potent and selective κ opioid receptor antagonists.

Journal of Medicinal Chemistry published new progress about 33697-81-3. 33697-81-3 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Carboxylic acid,Benzene,Phenol, name is 3-Chloro-4-hydroxyphenylacetic acid, and the molecular formula is C8H7ClO3, Computed Properties of 33697-81-3.

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

Ma, Jia published the artcileDiscovery of novel indole and indoline derivatives against Candida albicans as potent antifungal agents, Safety of 4-Chloro-3-(trifluoromethyl)benzenesulfonyl Chloride, the publication is Bioorganic & Medicinal Chemistry Letters (2022), 128826, database is CAplus and MEDLINE.

With the widespread use of azole antifungals in the clinic, the drug resistance has been emerging continuously. In this work, we have designed and prepared a series of novel indole and indoline derivatives, and in vitro antifungal activity against C. albicans were evaluated. The results showed that title compounds exhibited good antifungal effect on Azole-resistant C. albicans. Further mechanism study demonstrated that S18 could inhibit the biofilm formation and hyphae growth of C. albicans through the Ras-cAMP-PKA signaling pathway.

Bioorganic & Medicinal Chemistry Letters published new progress about 32333-53-2. 32333-53-2 belongs to chlorides-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Chloride,Sulfonyl chlorides,Benzene, name is 4-Chloro-3-(trifluoromethyl)benzenesulfonyl Chloride, and the molecular formula is C7H3Cl2F3O2S, Safety of 4-Chloro-3-(trifluoromethyl)benzenesulfonyl Chloride.

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