Category: bromides-buliding-blocks

Kajigaeshi, Shoji published the artcileOxidation using quaternary ammonium polyhalides. I. An efficient method for the Hofmann degradation of amides by use of benzyltrimethylammonium tribromide, COA of Formula: C10H16Br3N, the publication is Chemistry Letters (1989), 463-4, database is CAplus.

The reaction of amides with a calculated amount of benzyltrimethylammonium tribromide (I) in aqueous NaOH under mild conditions gave corresponding amines in fairly good yields. Thus benzmide gave 72% aniline in the presence of I in aqueous NaOH.

Chemistry Letters published new progress about 111865-47-5. 111865-47-5 belongs to bromides-buliding-blocks, auxiliary class Benzenes, name is Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, and the molecular formula is C10H16Br3N, COA of Formula: C10H16Br3N.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Dankwardt, Sharon M. published the artcileAmino acid derived sulfonamide hydroxamates as inhibitors of procollagen C-Proteinase. Part 2: Solid-Phase optimization of side chains, Name: 4-Bromo-1-(bromomethyl)-2-fluorobenzene, the publication is Bioorganic & Medicinal Chemistry Letters (2002), 12(8), 1233-1235, database is CAplus and MEDLINE.

Optimization of the amino acid side chain and the N-alkyl group of the sulfonamide of amino acid derived sulfonamide hydroxamates is discussed. The solid-phase synthesis of these potent inhibitors (e.g., I) of procollagen C-proteinase (PCP) is presented. In addition, novel carboxylic acid sulfonamides were discovered to be PCP inhibitors.

Bioorganic & Medicinal Chemistry Letters published new progress about 76283-09-5. 76283-09-5 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Benzyl bromide,Benzene, name is 4-Bromo-1-(bromomethyl)-2-fluorobenzene, and the molecular formula is C7H5Br2F, Name: 4-Bromo-1-(bromomethyl)-2-fluorobenzene.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Abadleh, Mohammed M. published the artcileThiophene ring-opening reactions. Direct access to the synthesis of 1,3,4-thiadiazoline-(condenced) pyridone hybrids, SDS of cas: 52431-30-8, the publication is Tetrahedron (2021), 131957, database is CAplus.

The reaction of N’-(aryl)benzothiohydrazides with 2-chloro-7-cyclopropyl-3-nitro-4-oxothieno[2,3-b]pyridine-5-carboxylic ester/acid in the presence of triethylamine furnished, upon addition of iodomethane, the resp. 1,3,4-thiadiazoline-(6-methylthio-4-oxopyridine) hybrids. Interestingly, the reaction of thiohydrazides with 4-oxothieno[2,3-b]pyridines incorporating N1-(2′-halogeno-5′-nitrophenyl) entities generated 1,3-thiazoline ring embedded in the resulting [fused]-tricyclic products. Similarly, the N1-(2′-chloropyridin-3′-yl) analog produced the resp. thiazolo[3,2-a: 5,6-b’]dipyridine-thiadiazoline hybrid. Monocyclic 2-chloro-3-nitrothiophenes in their reaction with benzothiohydrazide formed notable thiophene ring-opening products. This behavior is verified by quantum mech. calculations A proposed mechanistic pathway for this new reaction involving preferential predominance of thiophene ring-opening over Smiles rearrangement is presented.

Tetrahedron published new progress about 52431-30-8. 52431-30-8 belongs to bromides-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 2,5-Dibromo-3,4-dinitrothiophene, and the molecular formula is C4Br2N2O4S, SDS of cas: 52431-30-8.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Rook, Jerri M. published the artcileDiverse Effects on M₁ Signaling and Adverse Effect Liability within a Series of M₁ Ago-PAMs, Application In Synthesis of 76283-09-5, the publication is ACS Chemical Neuroscience (2017), 8(4), 866-883, database is CAplus and MEDLINE.

Both historical clin. and recent preclin. data suggest that the M1 muscarinic acetylcholine receptor is an exciting target for the treatment of Alzheimer’s disease and the cognitive and neg. symptom clusters in schizophrenia; however, early drug discovery efforts targeting the orthosteric binding site have failed to afford selective M1 activation. Efforts then shifted to focus on selective activation of M1 via either allosteric agonists or pos. allosteric modulators (PAMs). While M1 PAMs have robust efficacy in rodent models, some chemotypes can induce cholinergic adverse effects (AEs) that could limit their clin. utility. Here, the authors report studies aimed at understanding the subtle structural and pharmacol. nuances that differentiate efficacy from adverse effect liability within an indole-based series of M1 ago-PAMs. The authors’ data demonstrate that closely related M1 PAMs can display striking differences in their in vivo activities, and especially their propensities to induce adverse effects. The authors report the discovery of a novel PAM in this series that is devoid of observable adverse effect liability. Interestingly, the mol. pharmacol. profile of this novel PAM is similar to that of a representative M1 PAM that induces severe AEs. For instance, both compounds are potent ago-PAMs that demonstrate significant interaction with the orthosteric site (either bi-topic or neg. cooperativity). However, there are subtle differences in efficacies of the compounds at potentiating M1 responses, agonist potencies, and abilities to induce receptor internalization. While these differences may contribute to the differential in vivo profiles of these compounds, the in vitro differences are relatively subtle and highlight the complexities of allosteric modulators and the need to focus on in vivo phenotypic screening to identify safe and effective M1 PAMs.

ACS Chemical Neuroscience published new progress about 76283-09-5. 76283-09-5 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Benzyl bromide,Benzene, name is 4-Bromo-1-(bromomethyl)-2-fluorobenzene, and the molecular formula is C7H5Br2F, Application In Synthesis of 76283-09-5.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Lv, Xin-Yang published the artcileDihydroquinazolinones as adaptative C(sp³) handles in arylations and alkylations via dual catalytic C-C bond-functionalization, SDS of cas: 143-15-7, the publication is Nature Communications (2022), 13(1), 2394, database is CAplus and MEDLINE.

C-C bond forming cross-couplings are convenient technologies for the construction of functional mols. Consequently, there is continual interest in approaches that can render traditionally inert functionality as cross-coupling partners, included in this are ketones which are widely-available commodity chems. and easy to install synthetic handles. Herein, a dual catalytic strategy that utilizes dihydroquinazolinones derived from ketone congeners as adaptative one-electron handles for forging C(sp³) architectures via α C-C cleavage with aryl and alkyl bromides is reported. This approach is achieved by combining the flexibility and modularity of nickel catalysis with the propensity of photoredox events for generating open-shell reaction intermediates. This method is distinguished by its wide scope and broad application profile–including chem. diversification of advanced intermediates–, providing a catalytic technique complementary to existing C(sp³) cross-coupling reactions that operates within the C-C bond-functionalization arena.

Nature Communications published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C12H25Br, SDS of cas: 143-15-7.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Walter, Isabell published the artcileStructure-Activity Relationship and Mode-of-Action Studies Highlight 1-(4-Biphenylylmethyl)-1H-imidazole-Derived Small Molecules as Potent CYP121 Inhibitors, COA of Formula: C7H5Br2F, the publication is ChemMedChem (2021), 16(18), 2786-2801, database is CAplus and MEDLINE.

CYP121 of Mycobacterium tuberculosis (Mtb) is an essential target for the development of novel potent drugs against tuberculosis (TB). Besides known antifungal azoles, further compounds of the azole class were recently identified as CYP121 inhibitors with antimycobacterial activity. Herein, we report the screening of a similarity-oriented library based on the former hit compound, the evaluation of affinity toward CYP121, and activity against M. bovis BCG. The results enabled a comprehensive SAR study, which was extended through the synthesis of promising compounds and led to the identification of favorable features for affinity and/or activity and hit compounds with 2.7-fold improved potency. Mode of action studies show that the hit compounds inhibit substrate conversion and highlighted CYP121 as the main antimycobacterial target of our compounds Exemplified complex crystal structures of CYP121 with three inhibitors reveal a common binding site. Engaging in both hydrophobic interactions as well as hydrogen bonding to the sixth iron ligand, our compounds block a solvent channel leading to the active site heme. Addnl., we report the first CYP inhibitors that are able to reduce the intracellular replication of M. bovis BCG in macrophages, emphasizing their potential as future drug candidates against TB.

ChemMedChem published new progress about 76283-09-5. 76283-09-5 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Benzyl bromide,Benzene, name is 4-Bromo-1-(bromomethyl)-2-fluorobenzene, and the molecular formula is C8H8O3, COA of Formula: C7H5Br2F.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Hodges, Alastair J. published the artcileIntramolecular nitrone dipolar cycloadditions: control of regioselectivity and synthesis of naturally-occurring spirocyclic alkaloids, HPLC of Formula: 69361-41-7, the publication is Organic & Biomolecular Chemistry (2012), 10(45), 8963-8974, database is CAplus and MEDLINE.

The intramol. nitrone dipolar cycloaddition of in situ-generated nitrones such as compound I has been used for the synthesis of cyclic isoxazolidines II and III. The regioselectivity of the intramol. cycloaddition depends on the nature of the terminal substituent on the dipolarophile. The influence of the substituent on the regioselectivity of the cycloaddition has been examined using several model systems and two methods of nitrone formation. These studies demonstrated that the cyano-substituent plays a special role in favoring the formation of the 6,6,5-ring fused adduct II under thermodynamically controlled conditions. The utility of the cyclo-adduct IV (BOM = CH₂OCH₂Ph; see Scheme 12) as a precursor for the naturally occurring histrionicotoxins is illustrated by the synthesis of three “unsym.” (i.e. with each side chain bearing different functional groups) members of the histrionicotoxin family HTX-259A, HTX-285C and HTX-285E [V; R = CH:CH₂, CH₂CH₂CH:CH₂, and CH:CHCH:CH-(Z), resp.].

Organic & Biomolecular Chemistry published new progress about 69361-41-7. 69361-41-7 belongs to bromides-buliding-blocks, auxiliary class PROTAC Linker,Aliphatic Linker, name is (4-Bromobut-1-yn-1-yl)trimethylsilane, and the molecular formula is C7H13BrSi, HPLC of Formula: 69361-41-7.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Yohe, G. R. published the artcileCyclopentylalkylacetic acids and ω-cyclopentylethylalkylacetic acids and their bactericidal action towards B. leprae, SDS of cas: 18928-94-4, the publication is Journal of the American Chemical Society (1928), 1503-8, database is CAplus.

cf. preceding abstract Cyclopentylethanol, b₂₄ 96.5-7°, n_D²⁰ 1.4577, d₄²⁰ 0.9180; bromide, b₁₉ 75-7°, 1.4863, 1.2860. Cyclopentylbutanol, b₂ 88-92°, 1.4613, 0.9033 (70-5% yield); bromide, b₁₇ 110-1°, 1.4820, 1.1872 (60-5% yield); cyanide, b₁₇ 124-6.5°, 1.4542, 0.8887 (80-5% yield); hydrolysis with NaOH in 60% EtOH gives 80-5% of δ-cyclopentylpentanoic acid, b₂ 124-8°, 1.4594, 0.9752. Di-Et δ-cyclopentylbutylmalonate, b_2.2 154-60°, 1.4493, 0.9934 (40% yield); the acid, m. 121-4° (85% yield); heating the acid 2 hrs. at 160-80° gives 75% of ε-cyclopentylhexanoic acid, b_1.8 133-5°, m. 33-3.5°, n_D³⁵ 1.4549, d₄³⁵ 0.9518. The following di-Et cyclopentylalkylmalonates were prepared where R in the formula C₅H₉C(CO₂Et)₂R is: C₇H₁₅, b₁ 143-6°, n_D²⁰ 1.4548, d₄²⁰ 0.9749; C₈H₁₇, b₁ 160-5°, 1.4553, 0.9659; C₉H₁₉, b_0.6 152-5°, 1.4567, 0.9817; C₁₀H₂₁, b₁ 169-71°, 1.4571, 0.9560; C₁₁H₂₃, b₁ 186-9°, 1.4580, 0.9522. Di-Et β-cyclopentylethylalkylmalonates, C₅H₉(CH₂)₂C(CO₂Et)₂R: R is H, b₂ 125°, 1.4478, 1.0082; Et, b_1.9 126-9°, 1.4511, 0.9924; Pr, b_1.7 134-5°, 1.4510, 0.9873; Bu, b_1.8 136-40°, 1.4523, 0.9783; Am, b_1.1 148-50°, 1.4526, 0.9688; C₆H₁₃, 157-62°, 1.4531, 0.9624; C₇H₁₅, b₂ 172-4°, 1.4541, 0.9563; C₈H₁₇, b_1.2 182-4°, 1.4548, 0.9524. β-Cyclopentylethylalkylmalonic acids, C₅H₉(CH₂)₂C(CO₂H)₂R: R is H, m. 126.5°, Et, m. 141-3°; Pr, m. 137-8°; Bu, m. 139-40.5°; Am, m. 124-7°; C₆H₁₃, m. 129.5-30°. β-Cyclopentylalkylacetic acids, C₅H₉CH(CO₂H)R: R is C₇H₁₅, b_1.4 155-60°, 1.4594, 0.9312; C₈H₁₇, b₂ 166-9°, 1.4609, 0.9279; C₉H₁₉, b_1.4 177-8.5°, m. 37-7.5°; C₁₀H₂₁, b_1.7 189-90°, m. 34.5-6°; C₁₁H₂₃, b_1.3 193-7°, m. 43.5-5.5°. β-Cyclopentylethylalkylacetic acids, C₅H₉(CH₂)₂CH(CO₂H)R: R is H, b_2.4 115-8°, 1.4575, 0.9849; Et, b_1.3 122-4.5°, 1.4590, 0.9602; Pr, b_1.9 130-2°, 1.4595, 0.9533; Bu, b₁ 136-7°, 1.4608, 0.9435; Am, b_1.9 150-4°, 1.4610, 0.9360; C₆H₁₃, b_1.9, 157-61°, 1.4616, 0.9303; C₇H₁₅, b₂ 167-9°, 1.4621, 0.9252; C₈H₁₇, b_1.5 173-6°, 1.4629, 0.9210. Undecyl bromide, b₁₈ 134-7°, 1.4571, 1.052l. Di-Et cyclopentylmalonate, b₂ 115-7°, 1.4440, 1.0325. The greatest bactericidal action is found in the acids containing 16-18 C atoms; the β-cyclopentylethylalkylacetic acids are slightly more effective than the isomeric cyclopentylalkylacetic acids; a similar slight difference could be detected in the cyclohexyl series. Cyclopentylnonylacetic acid and cyclopentylethylheptylacetic acid, isomeric with dihydrohydnocarpic acid, are far more bactericidal than the latter compound There is no significant difference in bactericidal effect between the cyclohexyl and cyclopentyl compounds of equal mol. weight or of equal length side chain, though the figures appear to favor the cyclohexyl compounds The bactericidal action is not affected markedly by the presence of the double bond.

Journal of the American Chemical Society published new progress about 18928-94-4. 18928-94-4 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic cyclic hydrocarbon, name is (2-Bromoethyl)cyclopentane, and the molecular formula is C13H10N2S, SDS of cas: 18928-94-4.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Pujala, Brahmam published the artcileDiscovery of Pyrazolopyrimidine Derivatives as Novel Dual Inhibitors of BTK and PI3Kδ, COA of Formula: C7H8BBrO3, the publication is ACS Medicinal Chemistry Letters (2016), 7(12), 1161-1166, database is CAplus and MEDLINE.

The aberrant activation of B-cells has been implicated in several types of cancers and hematol. disorders. BTK and PI3Kδ are kinases responsible for B-cell signal transduction, and inhibitors of these enzymes have demonstrated clin. benefit in certain types of lymphoma. Simultaneous inhibition of these pathways could result in more robust responses or overcome resistance as observed in single agent use. The authors report a series of novel compounds that have low nanomolar potency against both BTK and PI3Kδ as well as acceptable PK properties that could be useful in the development of treatments against B-cell related diseases.

ACS Medicinal Chemistry Letters published new progress about 1256345-59-1. 1256345-59-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronic Acids,Boronic acid and ester,, name is (4-Bromo-3-methoxyphenyl)boronic acid, and the molecular formula is C7H8BBrO3, COA of Formula: C7H8BBrO3.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Zhao, Fengqian published the artcileCopper-Catalyzed Substrate-Controlled Carbonylative Synthesis of α-Keto Amides and Amides from Alkyl Halides, Related Products of bromides-buliding-blocks, the publication is Angewandte Chemie, International Edition (2022), 61(17), e202200062, database is CAplus and MEDLINE.

Controllable production of α-keto amides and amides from the same substrates is an attractive goal in the field of transition-metal-catalyzed (double-)carbonylation. A novel copper-catalyzed highly selective double carbonylation of alkyl bromides was developed. Moderate to good yields of α-keto amides were obtained as the only products. In the case of alkyl iodides, double- and mono-carbonylation can be achieved controllably under different conditions.

Angewandte Chemie, International Edition published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C13H10F2, Related Products of bromides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary