Month: November 2022

Fox, Brian M. published the artcileA Selective Prostaglandin E₂ Receptor Subtype 2 (EP2) Antagonist Increases the Macrophage-Mediated Clearance of Amyloid-Beta Plaques, Product Details of C7H4BrClO2, the publication is Journal of Medicinal Chemistry (2015), 58(13), 5256-5273, database is CAplus and MEDLINE.

A high-throughput screen resulted in the discovery of benzoxazepine I, an EP2 antagonist possessing low microsomal stability and potent CYP3A4 inhibition. Modular optimization of lead compound I resulted in the discovery of benzoxazepine II, a mol. with single-digit nM binding affinity for the EP2 receptor and significantly improved microsomal stability. It was devoid of CYP inhibition and was ∼4000-fold selective against the other EP receptors. Compound II was shown to have good PK properties in CD-1 mice and high CNS permeability in C57Bl/6s mice and Sprague-Dawley rats. In an ex vivo assay, it demonstrated the ability to increase the macrophage-mediated clearance of amyloid-beta plaques from brain slices in a dose-dependent manner.

Journal of Medicinal Chemistry published new progress about 19652-33-6. 19652-33-6 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Bromide,Benzene,Phenol,Aldehyde, name is 5-Bromo-3-chloro-2-hydroxybenzaldehyde, and the molecular formula is C7H4BrClO2, Product Details of C7H4BrClO2.

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

Guay, Daniel published the artcileSynthesis and SAR of pyrimidine-based, non-nucleotide P2Y₁₄ receptor antagonists, SDS of cas: 209919-30-2, the publication is Bioorganic & Medicinal Chemistry Letters (2011), 21(10), 2832-2835, database is CAplus and MEDLINE.

A weak antagonist of the pyrimidinergic receptor P2Y₁₄ containing a dihydropyridopyrimidine core was identified through high-throughput screening. Subsequent optimization led to potent, non-UTP competitive antagonists and represent the first reported non-nucleotide antagonists of this receptor. Dihydropyridopyrimidine I was identified as a 10 nM P2Y₁₄ antagonist with good oral bioavailability and provided sufficient exposure in mice to be used as a tool for future in vivo studies.

Bioorganic & Medicinal Chemistry 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 C7H8BClO2, SDS of cas: 209919-30-2.

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

Hawad, Hacan published the artcileDeprotonation of pyridine carboxamides using lithium magnesates bases, Related Products of chlorides-buliding-blocks, the publication is Tetrahedron (2008), 64(14), 3236-3245, database is CAplus.

Regioselective deprotonation of N-methyl- and tert-butylpyridine carboxamides using lithium magnesates bases was achieved at room temperature avoiding nucleophilic addition on the pyridine mol. and auto-condensation of the arylmetal intermediates on the amide group was described. The hydrogen-magnesium exchange was evidenced using ¹H NMR spectroscopy at room temperature and the reactivity of the lithium 2-, 3- and 4-carboxamidopyridinylmagnesiates complexes towards electrophiles and in cross-coupling reactions was studied.

Tetrahedron 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, Related Products of chlorides-buliding-blocks.

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

Shakhnazaryan, G. M. published the artcileSelectivity of bromine migration in oxidation of gem-bromochlorovinyl compounds by oxygen, Application In Synthesis of 18791-02-1, the publication is Armyanskii Khimicheskii Zhurnal (1979), 32(2), 149-50, database is CAplus.

trans-XCH₂CH:CClBr (X = H, Cl, Br, HO) oxidation with 2 L/h O₂ or 10 L/h air gave polyperoxides which were heated to give mixtures of the corresponding XCH₂CHBrCOCl (I) and XCH₂CHClCOBr in ∼93% combined yield, with I predominating in all cases.

Armyanskii Khimicheskii Zhurnal published new progress about 18791-02-1. 18791-02-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is 2,3-Dibromopropionylchloride, and the molecular formula is C8H8O3, Application In Synthesis of 18791-02-1.

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

Baumgartner, Yann published the artcileOne-Pot Alkene Hydroboration/Palladium-Catalyzed Migratory Suzuki-Miyaura Cross-Coupling, Category: chlorides-buliding-blocks, the publication is ACS Catalysis (2020), 10(18), 10508-10515, database is CAplus.

Chain-walking is a powerful approach toward the functionalization of C-H bonds remote to a functional group. Whereas various Pd-catalyzed migratory cross-couplings have been developed in the past years, the design of an efficient migratory version of the popular Suzuki-Miyaura cross-coupling has remained elusive. The current article reports a one-pot procedure consisting of alkene hydroboration and migratory Suzuki-Miyaura coupling of the resulting alkylboronic acid intermediate. A high regioselectivity for the benzylic position of the initial alkene was achieved by using P(t-Bu)₂Me as the ligand and an ortho-substituted aryl electrophile. Regioconvergence from alkene positional and geometrical isomers and long-range migration were demonstrated. Mechanistic investigations indicated that the migration occurs through a partially reversible, nondissociative mechanism.

ACS Catalysis published new progress about 117738-74-6. 117738-74-6 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Bromide,Benzene,Ester, name is Methyl 4-bromo-3-chlorobenzoate, and the molecular formula is C8H6BrClO2, Category: chlorides-buliding-blocks.

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

Ruel, Odile published the artcilePreparation and thermal properties of N-alkylideneethenesulfenamides, Computed Properties of 1002-41-1, the publication is Synthetic Communications (1990), 20(14), 2151-64, database is CAplus.

Reaction of ClCH₂CH₂SSO₂C₆H₄Me-4 with LiN(SiMe₃)₂ in THF followed by hydrolysis afforded 78% N,N-bis(trimethylsilyl)ethenesulfenamide CH₂:CHSN(SiMe₃)₂ (I). Reaction of R¹COR² [R¹ = Ph, hexyl, R² = H; R¹ = R² = Pr; R¹ = Ph, R² = Me; R¹R² = (CH₂)₅, (CH₂)₆, (CH₂)₂CHCMe(CH₂)₂] with I in the presence of Bu₄NF gave N-alkylideneethenesulfenamides R¹CR²:NSCH:CH₂ (II) in 40-81% yields. Heating II [R¹R² = (CH₂)₅; R¹ = Ph, R² = Me] in 1,2-diethoxyethane gave 40-60% pyrroles III.

Synthetic Communications published new progress about 1002-41-1. 1002-41-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is 1,2-Bis(2-chloroethyl)disulfane, and the molecular formula is C4H8Cl2S2, Computed Properties of 1002-41-1.

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

Tran, Duc N. published the artcileFlow chemistry as a discovery tool to access sp²-sp³ cross-coupling reactions via diazo compounds, HPLC of Formula: 944129-07-1, the publication is Chemical Science (2015), 6(2), 1120-1125, database is CAplus and MEDLINE.

The work took advantage of an important feature of flow chem., whereby the generation of a transient species (or reactive intermediate) was followed by a transfer step into another chem. environment, before the intermediate was reacted with a coupling partner. This concept was successfully applied to achieve a room temperature sp²-sp³ cross coupling of boronic acids with diazo compounds, these latter species being generated from hydrazones under flow conditions using MnO₂ as the oxidant.

Chemical Science published new progress about 944129-07-1. 944129-07-1 belongs to chlorides-buliding-blocks, auxiliary class Fluoride,Chloride,Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronic acid and ester,, name is (4-Chloro-2-fluoro-3-methoxyphenyl)boronic acid, and the molecular formula is C8H13N5O, HPLC of Formula: 944129-07-1.

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

Lippa, Rhys A. published the artcileSynthesis of Arylethylamines via C(sp³)-C(sp³) Palladium-Catalyzed Cross-Coupling, Category: chlorides-buliding-blocks, the publication is Journal of Organic Chemistry (2021), 86(4), 3583-3604, database is CAplus and MEDLINE.

Herein, the synthesis of arylethylamine scaffolds was reported via palladium-catalyzed C(sp³)-C(sp³) coupling between (chloromethyl)aryls and air-/moisture-stable N,N-dialkylaminomethyltrifluoroborate salts. Rapid hit identification was achieved using microscale high-throughput experimentation and was followed by millimolar-scale reaction parameter optimization. A range of structurally and electronically varied arylethylamine products were obtained in moderate to excellent yields (27-96%). The reaction mechanism was proposed to proceed via formation of a trialkylbenzylammonium species prior to oxidative addition

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, Category: chlorides-buliding-blocks.

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

Favalli, Nicholas published the artcileLarge screening of DNA-compatible reaction conditions for Suzuki and Sonogashira cross-coupling reactions and for reverse amide bond formation, Quality Control of 871332-95-5, the publication is Bioorganic & Medicinal Chemistry (2021), 116206, database is CAplus and MEDLINE.

Progress in DNA-encoded chem. library synthesis and screening crucially relies on the availability of DNA-compatible reactions, which proceed with high yields and excellent purity for a large number of possible building blocks. In the past, exptl. conditions have been presented for the execution of Suzuki and Sonogashira cross-coupling reactions on-DNA. In this article, our aim was to optimize Suzuki and Sonogashira reactions, comparing our results to previously published procedures. We have tested the performance of improved conditions using 606 building blocks (including boronic acids, pinacol boranes and terminal alkynes), achieving >70% conversion for 84% of the tested mols. Moreover, we describe efficient exptl. conditions for the on-DNA synthesis of amide bonds, starting from DNA derivatives carrying a carboxylic acid moiety and 300 primary, secondary and aromatic amines, as amide bonds are frequently found in DNA-encoded chem. libraries thanks to their excellent DNA compatibility.

Bioorganic & Medicinal Chemistry 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 C7H5BClNO2, Quality Control of 871332-95-5.

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

Favalli, Nicholas published the artcileLarge screening of DNA-compatible reaction conditions for Suzuki and Sonogashira cross-coupling reactions and for reverse amide bond formation, SDS of cas: 209919-30-2, the publication is Bioorganic & Medicinal Chemistry (2021), 116206, database is CAplus and MEDLINE.

Progress in DNA-encoded chem. library synthesis and screening crucially relies on the availability of DNA-compatible reactions, which proceed with high yields and excellent purity for a large number of possible building blocks. In the past, exptl. conditions have been presented for the execution of Suzuki and Sonogashira cross-coupling reactions on-DNA. In this article, our aim was to optimize Suzuki and Sonogashira reactions, comparing our results to previously published procedures. We have tested the performance of improved conditions using 606 building blocks (including boronic acids, pinacol boranes and terminal alkynes), achieving >70% conversion for 84% of the tested mols. Moreover, we describe efficient exptl. conditions for the on-DNA synthesis of amide bonds, starting from DNA derivatives carrying a carboxylic acid moiety and 300 primary, secondary and aromatic amines, as amide bonds are frequently found in DNA-encoded chem. libraries thanks to their excellent DNA compatibility.

Bioorganic & Medicinal Chemistry 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 C7H8BClO2, SDS of cas: 209919-30-2.

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