Month: October 2022

Tran, Van T.; Gurak, John A. Jr; Yang, Kin S.; Engle, Keary M. published the artcile< Activation of diverse carbon-heteroatom and carbon-carbon bonds via palladium(II)-catalyzed β-X elimination>, Safety of Benzo[d]isoxazol-3-ol, the main research area is quinolinyl carboxamide regioselective substitution ring opening; amino acid aminoquinoline amide gamma substituted regioselective stereoselective preparation; palladium catalyst regioselective directed substitution quinolinyl alkanecarboxamide; aminoquinoline amino acid amide regioselective gamma substitution; tandem substitution ring opening closing reaction quinolinyl heterocyclylalkanecarboxamide; directed activation substitution reaction quinolinyl carboxamide beta elimination.

γ-Substituted N-(8-quinolinyl) alkanecarboxamides and cycloalkanecarboxamides such as I underwent regioselective substitution reactions with nucleophiles such as 1-methyl- and 1,2-dimethylindoles in the presence of Pd(OAc)2 and 1-adamantanecarboxylic acid (1-AdCO2H) to yield substitution products such as II (R = H, Me). The substitutions occurred using elimination reactions of the β-palladated carboxamides as a key step; a β-palladation product was isolated and its structure determined by X-ray crystallog. The substitution reactions occurred at alkyl C(sp3)-oxygen, nitrogen, carbon, fluorine and sulfur bonds with high regioselectivity. The method was used for substitution reactions of γ-substituted amino acids such as the 8-aminoquinolinyl amide of L-methionine and its sulfoxide to give functionalized amino acids in 60-98% ee. Unstrained 8-aminoquinolinyl heterocyclylalkanecarboxamides underwent regioselective γ-substitution reactions with ring opening if a heteroatom was in the γ-position; if the heteroatom was in an appropriate position, lactonization and lactamization reactions also occurred with loss of the aminoquinoline moieties.

Nature Chemistry published new progress about Amino amides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 21725-69-9 belongs to class isoxazole, and the molecular formula is C7H5NO2, Safety of Benzo[d]isoxazol-3-ol.

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Branca, C.; Ricci, A.; Fermi, P.; Bassi, M. published the artcile< Activity of 1,2-benzisoxazole-3-one and indole-2,3-dione on plant regeneration in vitro and on cell elongation>, Computed Properties of 21725-69-9, the main research area is benzisoxazoleone indoledione auxin tomato pea.

The morphogenetic and cell elongating activity of 1,2-benzisoxazole-3-one (I), a compound similar 1,2-benzisoxazole-3-acetic acid but lacking the lateral carbon chain, was tested. For comparison, the activity of indole-2,3-dione, was tested. The tests were made on the regeneration of tomato (Lycopersicon esculentum) from cytoledons and on pea (Pisum sativum var. Alaska) stem elongation. I retains part of the high shoot inducing activity of 1,2-benzoisoxazole-3-acetic acid, while indole-2,3-dione is inactive. Both compounds have no effect on root induction or cell elongation.

Plant Cell Reports published new progress about Plant elongation. 21725-69-9 belongs to class isoxazole, and the molecular formula is C7H5NO2, Computed Properties of 21725-69-9.

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Matuszak, Nicolas; Es Saadi, Bouazza; Labar, Geoffray; Marchand-Brynaert, Jacqueline; Lambert, Didier M. published the artcile< Benzisothiazolinone as a useful template for the design of new monoacylglycerol lipase inhibitors: Investigation of the target residues and comparison with octhilinone>, COA of Formula: C7H5NO2, the main research area is benzisothiazolinone preparation monoacylglycerol lipase inhibitor.

The regulation of 2-arachidonoylglycerol (2-AG) levels is a major issue as 2-AG has been proven to participate in numerous physiopathol. phenomena such as neuroprotection or analgesia. Octhilinone, a cysteine-reagent compound, has recently been shown to inhibit in the nanomolar range monoacylglycerol lipase (MAGL), the major enzyme responsible for the degradation of 2-AG. Here, we further investigate the mechanism by which octhilinone and its benzisothiazolinone analog inhibit human MAGL. We also provide new information on the structural requirements for MAGL inhibition by these compounds Finally, we describe for N-octylbenzisothiazolinone a mode of inhibition which is partially different from that described for octhilinone, especially with regard to the targeted cysteine residues in the vicinity of the catalytic site.

Bioorganic & Medicinal Chemistry Letters published new progress about Alkylation. 21725-69-9 belongs to class isoxazole, and the molecular formula is C7H5NO2, COA of Formula: C7H5NO2.

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Kaplan, Anna; Gaschler, Michael M.; Dunn, Denise E.; Colligan, Ryan; Brown, Lewis M.; Palmer, Arthur G. III; Lo, Donald C.; Stockwell, Brent R. published the artcile< Small molecule-induced oxidation of protein disulfide isomerase is neuroprotective>, Synthetic Route of 21725-69-9, the main research area is protein disulfide isomerase oxidation neuroprotective pharmacokinetics; drug; inhibitor; neuroprotection; protein disulfide isomerase; small molecule.

Protein disulfide isomerase (PDI) is a chaperone protein in the endoplasmic reticulum that is up-regulated in mouse models of, and brains of patients with, neurodegenerative diseases involving protein misfolding. PDI’s role in these diseases, however, is not fully understood. Here, the authors report the discovery of a reversible, neuroprotective lead optimized compound I, that acts as a modulator of PDI. I was identified using a high-throughput screen of ∼10,000 lead-optimized compounds for potent rescue of viability of PC12 cells expressing mutant huntingtin protein, followed by an evaluation of compounds on PDI reductase activity in an in vitro screen. Isothermal titration calorimetry and fluorescence experiments revealed that binding to PDI was reversible with a Kd of 62 nM, suggesting I to be the most potent PDI inhibitor reported to date. Using 2D heteronuclear single quantum correlation NMR experiments, the authors were able to map the binding site of I as being adjacent to the active site and to observe that binding of I forces PDI to adopt an oxidized conformation. Furthermore, the authors found that I-induced oxidation of PDI has a neuroprotective effect not only in cell culture, but also in corticostriatal brain slice cultures. I exhibited high stability in mouse liver microsomes and blood plasma, low intrinsic microsome clearance, and low plasma-protein binding. These results suggest that I is a promising lead compound to evaluate the potential therapeutic effects of modulating PDI in animal models of disease.

Proceedings of the National Academy of Sciences of the United States of America published new progress about Homo sapiens. 21725-69-9 belongs to class isoxazole, and the molecular formula is C7H5NO2, Synthetic Route of 21725-69-9.

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Yang, Yutao; Huo, Fangjun; Yin, Caixia; Xu, Ming; Hu, Ying; Chao, Jianbin; Zhang, Yongbin; Glass, Timothy E.; Yoon, Juyoung published the artcile< A novel method for the synthesis of 1,2-benzisoxazoline-3-one and its application to hypochlorite recognition>, Electric Literature of 21725-69-9, the main research area is benzisoxazolineone synthesis hypochlorite determination imaging.

The reaction of salicylhydroxamic acid with hypochlorite produces 1,2-benzisoxazoline-3-one, a heterocycle that contains a fluorophore. As a result, this reaction was used as the basis for a new, selective and sensitive fluorescence system for the recognition of hypochlorite. The effectiveness of the method was demonstrated by its use to detect hypochlorite in a disinfectant solution as well as to image hypochlorite in cells.

Journal of Materials Chemistry B: Materials for Biology and Medicine published new progress about Biological imaging. 21725-69-9 belongs to class isoxazole, and the molecular formula is C7H5NO2, Electric Literature of 21725-69-9.

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Kaplan, Anna; Gaschler, Michael M.; Dunn, Denise E.; Colligan, Ryan; Brown, Lewis M.; Palmer, Arthur G. III; Lo, Donald C.; Stockwell, Brent R. published the artcile< Small molecule-induced oxidation of protein disulfide isomerase is neuroprotective>, Synthetic Route of 21725-69-9, the main research area is protein disulfide isomerase oxidation neuroprotective pharmacokinetics; drug; inhibitor; neuroprotection; protein disulfide isomerase; small molecule.

Protein disulfide isomerase (PDI) is a chaperone protein in the endoplasmic reticulum that is up-regulated in mouse models of, and brains of patients with, neurodegenerative diseases involving protein misfolding. PDI’s role in these diseases, however, is not fully understood. Here, the authors report the discovery of a reversible, neuroprotective lead optimized compound I, that acts as a modulator of PDI. I was identified using a high-throughput screen of ∼10,000 lead-optimized compounds for potent rescue of viability of PC12 cells expressing mutant huntingtin protein, followed by an evaluation of compounds on PDI reductase activity in an in vitro screen. Isothermal titration calorimetry and fluorescence experiments revealed that binding to PDI was reversible with a Kd of 62 nM, suggesting I to be the most potent PDI inhibitor reported to date. Using 2D heteronuclear single quantum correlation NMR experiments, the authors were able to map the binding site of I as being adjacent to the active site and to observe that binding of I forces PDI to adopt an oxidized conformation. Furthermore, the authors found that I-induced oxidation of PDI has a neuroprotective effect not only in cell culture, but also in corticostriatal brain slice cultures. I exhibited high stability in mouse liver microsomes and blood plasma, low intrinsic microsome clearance, and low plasma-protein binding. These results suggest that I is a promising lead compound to evaluate the potential therapeutic effects of modulating PDI in animal models of disease.

Proceedings of the National Academy of Sciences of the United States of America published new progress about Homo sapiens. 21725-69-9 belongs to class isoxazole, and the molecular formula is C7H5NO2, Synthetic Route of 21725-69-9.

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Yang, Yutao; Huo, Fangjun; Yin, Caixia; Xu, Ming; Hu, Ying; Chao, Jianbin; Zhang, Yongbin; Glass, Timothy E.; Yoon, Juyoung published the artcile< A novel method for the synthesis of 1,2-benzisoxazoline-3-one and its application to hypochlorite recognition>, Electric Literature of 21725-69-9, the main research area is benzisoxazolineone synthesis hypochlorite determination imaging.

The reaction of salicylhydroxamic acid with hypochlorite produces 1,2-benzisoxazoline-3-one, a heterocycle that contains a fluorophore. As a result, this reaction was used as the basis for a new, selective and sensitive fluorescence system for the recognition of hypochlorite. The effectiveness of the method was demonstrated by its use to detect hypochlorite in a disinfectant solution as well as to image hypochlorite in cells.

Journal of Materials Chemistry B: Materials for Biology and Medicine published new progress about Biological imaging. 21725-69-9 belongs to class isoxazole, and the molecular formula is C7H5NO2, Electric Literature of 21725-69-9.

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Ueda, Mitsuru; Oikawa, Hideaki published the artcile< 1,2-Benzisoxazol-3-yl diphenyl phosphate: a new, reactive activating agent for the synthesis of amides, esters, and peptides via condensation>, SDS of cas: 21725-69-9, the main research area is benzisoxazolyl phosphate preparation condensation agent; amidation agent benzisoxazolyl phosphate; esterification agent benzisoxazolyl phosphate; peptide coupling agent benzisoxazolyl phosphate.

Title agent I was prepared and used to activate carboxylic acids (e.g., benzoic, hexanoic, and cinnamic acids) prior to amidation or esterification. One- and two-step procedures are given. I was also shown to be useful as a peptide-forming reagent; eleven protected dipeptides esters were prepared

Journal of Organic Chemistry published new progress about Amidation. 21725-69-9 belongs to class isoxazole, and the molecular formula is C7H5NO2, SDS of cas: 21725-69-9.

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Yevich, Joseph P.; New, James S.; Smith, David W.; Lobeck, Walter G.; Catt, John D.; Minielli, Joseph L.; Eison, Michael S.; Taylor, Duncan P.; Riblet, Leslie A.; Temple, Davis L. Jr. published the artcile< Synthesis and biological evaluation of 1-(1,2-benzisothiazol-3-yl)- and (1,2-benzisoxazol-3-yl)piperazine derivatives as potential antipsychotic agents>, Related Products of 21725-69-9, the main research area is antipsychotic benzisothiazolylpiperazine benzisoxazolylpiperazine preparation; piperazine benzisothiazolyl benzisoxazolyl.

The title compounds e.g. I [R = H, 2-benzothiazolyl, 4-(7,9-dioxo-8-azaspiro[4.5]decane-8-yl)butyl, p-FC6H4CO(CH2)3; X = S, O], were prepared and exhibited potential antipsychotic activity on the basis of their potent affinity for dopaminergic rat membrane sites labeled with [3H]spiperone and their attenuation of conditioned avoidance responding and apomorphine-induced stereotypy in rats. Thus, 3-chloro-1,2-benzisoxazole was treated with piperazine to give I (R = H, X = S), which was treated with 8-(4-chlorobutyl)-8-azaspiro[4.5]decane-7,9-dione to give I [R = 4-(7,9-dioxo-8-azaspiro[4.5]decane-8-yl)butyl, X = S] (II). Structure-activity relationships within the series are discussed. II was active in the Sidman avoidance paradigm and blocked amphetamine-induced stereotyped behavior in dogs for up to 7 h. The compound’s lack of typical neuroleptic-like effects in the rat catalepsy test coupled with its failure to produce dopamine receptor supersensitivity following chronic administration suggests that it should not cause the movement disorders commonly associated with antipsychotic therapy. II is currently undergoing clin. evaluation in schizophrenic patients.

Journal of Medicinal Chemistry published new progress about Antipsychotics. 21725-69-9 belongs to class isoxazole, and the molecular formula is C7H5NO2, Related Products of 21725-69-9.

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

He, Jie; Li, Dongdong; Xiong, Kun; Ge, Yongjie; Jin, Hongwei; Zhang, Guozhou; Hong, Mengshi; Tian, Yongliang; Yin, Jin; Zeng, Huihui published the artcile< Inhibition of thioredoxin reductase by a novel series of bis-1,2-benzisoselenazol-3(2H)-ones: Organoselenium compounds for cancer therapy>, Category: isoxazole, the main research area is anticancer thioredoxin reductase inhibitor benzisoselenazolone preparation SAR.

Thioredoxin reductase (TrxR) is critical for cellular redox regulation and is involved in tumor proliferation, apoptosis and metastasis. Its C-terminal redox-active center contains a cysteine (Cys497) and a unique selenocysteine (Sec498), which are exposed to solvent and easily accessible. Thus, it is becoming an important target for anticancer drugs. Selective inhibition of TrxR by 1,2-(bis-1,2-benzisoselenazol-3(2H)-one)ethane (4a) prevents proliferation of several cancer cell lines both in vivo and in vitro. Using the structure of 4a as a starting point, a series of novel bis-1,2-benzisoselenazol-3(2H)-ones was designed, prepared and tested to explore the structure-activity relationships (SARs) for this class of inhibitor and to improve their potency. Notably, 1,2-(5,5′-dimethoxybis(1,2-benzisoselenazol-3(2H)-one))ethane (12) was found to be more potent than 4a in both in vitro and in vivo evaluation. Its binding sites were confirmed by biotin-conjugated iodoacetamide assay and a SAR model was generated to guide further structural modification.

Bioorganic & Medicinal Chemistry published new progress about Antitumor agents. 21725-69-9 belongs to class isoxazole, and the molecular formula is C7H5NO2, Category: isoxazole.

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem