Tag: M.W=100-150

Tomita, Kazuo; Sugai, Soji; Kobayashi, Tomiko; Murakami, Tadashi published the artcile< Studies on isoxazoles. VIII. Versatile syntheses and chemical properties of 3-chloroisoxazolium chlorides>, Quality Control of 21725-69-9, the main research area is isoxazolinone chlorination; chloroisoxazolium chloride preparation pyrolysis; isoxazolinethione; acid esterification amidation isoxazolium chloride.

The reaction of 4-isoxazolin-3-ones with COCl2 or ClCO2CCl3 gave 3-chloroisoxazolium chlorides in good yields, and these were converted to 4-isoxazoline-3-thiones on treatment with NaSH. Pyrolysis of 3-chloro-2-methylisoxazolium chlorides afforded 3-chloroisoxazoles. In the presence of Bu3N, 3-chloro-2-methyl-5-phenylisoxazolium chloride condensed carboxylic acids with alcs. or amines to give the corresponding esters or amides in high yields, together with 2-methyl-5-phenyl-4-isoxazolin-3-one.

Chemical & Pharmaceutical Bulletin published new progress about Amidation. 21725-69-9 belongs to class isoxazole, and the molecular formula is C7H5NO2, Quality Control of 21725-69-9.

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Slawik, Tomasz; Paw, Beata published the artcile< Synthesis of 3-(3-oxo-1,2-benzisoxazol-2-yl)propionic acids derivatives>, Computed Properties of 21725-69-9, the main research area is oxo benzisoxazolepropanamide preparation; hydroxy benzisoxazolepropanamide preparation.

In the reaction of 3-hydroxy-1,2-benzisoxazole (1,2-benzisoxazol-3(2H)-one) and its derivatives with 3-bromopropionic acid only N-substituted products were obtained. Esters and amides of these acids and N-dibenzylaminomethyl- and N-hydroxymethylamides were also synthesized.

Acta Poloniae Pharmaceutica published new progress about 21725-69-9. 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

Smalley, R. K. published the artcile< Product class 10: 1,2-benzisoxazoles and related compounds>, Electric Literature of 21725-69-9, the main research area is review benzisoxazole preparation.

A review presents various methods of ring-closure reaction and substituent modification for the synthesis of 1,2-benzisoxazoles and related compounds

Science of Synthesis published new progress about Aromatization. 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

Zhang, Xuqing; Qiu, Yuhong; Li, Xiaojie; Bhattacharjee, Sheela; Woods, Morgan; Kraft, Patricia; Lundeen, Scott G.; Sui, Zhihua published the artcile< Discovery and structure-activity relationships of a novel series of benzopyran-based KATP openers for urge urinary incontinence>, SDS of cas: 21725-69-9, the main research area is hydroxybenzopyran stereoselective preparation sulfonylurea receptor modulator potassium channel opener; structure hydroxybenzopyran potassium channel opening activity selectivity sulfonylurea receptor.

Substituted hydroxybenzopyrans such as hydroxybenzopyranyl benzoisoxazolone I are prepared as selective modulators of sulfonylurea receptors (SUR) in ATP-sensitive potassium channels for use as potassium channel openers for treatment of urinary incontinence. The structure-activity relationships of 4-substituted benzopyranols are evaluated. I shows EC50 values of 0.67 μM in SUR2B-containing cells, 99.8 μM in SUR1-containing cells, and 1.67 μM in SUR2A-containing cells; in two rat models of myogenic bladder overactivity, I inhibits spontaneous bladder contractions.

Bioorganic & Medicinal Chemistry published new progress about ATP-sensitive potassium channels Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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

Domagalina, E.; Slawik, T. published the artcile< Thermoanalytical studies of organic compounds. Part V. Rearrangement of acylated 3-hydroxy-1,2-benzisoxazoles>, Safety of Benzo[d]isoxazol-3-ol, the main research area is benzisoxazole acyl thermal decomposition; benzoxazolinone acyl.

Thermal anal. of new benzoyl- and methoxy- and ethoxycarbonyl-3-hydroxybenzisoxazole (e.g., I) was carried out derivatog. In the serial stages of tautomeric, isomeric and decarboxylic transformation, new N-acylated benzisoxazolin-3-ones and -2-ones and 3-alkylbenzoxazolin-2-ones were obtained.

Journal of Thermal Analysis published new progress about Thermal decomposition. 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

Yoshji, Kiyotaka; Ohba, Yoshihiro; Nishiwaki, Tarozaemon published the artcile< β-Ribo- and α-arabinonucleosides containing the 1,2-benzisoxazole and 1,2-benzisothiazole rings>, HPLC of Formula: 21725-69-9, the main research area is benzisoxazole containing ribonucleoside arabinonucleoside; benzisothiazole containing ribonucleoside; ribofuranose condensation benzisoxazole benzisothiazole; arabinofuranose condensation benzisoxazole.

The reaction of the silylated base of 1,2-benzisoxazol-3(2H)-one (I, R = R1 = H, X = O), its 7-Me derivative I (R = Me, R1 = H, X = O), and the 5-methylbenzisothiazolone I (R = H, R1 = Me, X = S), resp., with 1-O-acetyl-2,3,5-tri-O-benzoyl-β-D-ribofuranose followed by basic deprotection gave the corresponding β-D-ribonucleosides II. Similarly, 1-O-acetyl-2,3,5-tri-O-benzoyl-α-D-arabinofuranose reacted with I (R = R1 = H, X = O) in the presence of stannic chloride, to afford the corresponding α-arabinonucleoside III. Structural proofs for these nucleosides are provided from elemental analyses and 1H and 13C NMR spectra.

Journal of Heterocyclic Chemistry published new progress about Glycosylation. 21725-69-9 belongs to class isoxazole, and the molecular formula is C7H5NO2, HPLC of Formula: 21725-69-9.

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Szilagyi, Bence; Kovacs, Peter; Ferenczy, Gyorgy G.; Racz, Anita; Nemeth, Krisztina; Visy, Julia; Szabo, Pal; Ilas, Janez; Balogh, Gyorgy T.; Monostory, Katalin; Vincze, Istvan; Tabi, Tamas; Szoko, Eva; Keseru, Gyorgy M. published the artcile< Discovery of isatin and 1H-indazol-3-ol derivatives as D-amino acid oxidase (DAAO) inhibitors>, COA of Formula: C7H5NO2, the main research area is isatin indazolol derivative preparation amino acid oxidase inhibitor schizophrenia; Binding thermodynamics; Optimization; Protonation state; d-Amino acid oxidase.

D-Amino acid oxidase (DAAO) is a potential target in the treatment of schizophrenia as its inhibition increases brain D-serine level and thus contributes to NMDA receptor activation. Inhibitors of DAAO were sought testing [6+5] type heterocycles and identified isatin derivatives as micromolar DAAO inhibitors. A pharmacophore and structure-activity relationship anal. of isatins and reported DAAO inhibitors led the authors to investigate 1H-indazol-3-ol derivatives and nanomolar inhibitors were identified. The series was further characterized by pKa and isothermal titration calorimetry measurements. Representative compounds exhibited beneficial properties in in vitro metabolic stability and PAMPA assays. 6-Fluoro-1H-indazol-3-ol (37) significantly increased plasma D-serine level in an in vivo study on mice. These results show that the 1H-indazol-3-ol series represents a novel class of DAAO inhibitors with the potential to develop drug candidates.

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

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Sieser, Janice E.; Singer, Robert A.; McKinley, Jason D.; Bourassa, Dennis E.; Teixeira, John J.; Long, James published the artcile< Synthesis of a bicyclic piperazine from l-aspartic acid and application of a fluoride-promoted SNAr coupling>, Application In Synthesis of 21725-69-9, the main research area is benzoisoxazolyloctahydropyridopyrazinylmethanol preparation chem resolution nucleophilic aromatic substitution.

The process development is reported of a pivotal C-N bond formation involving ((7R,9aS)-octahydro-1H-pyrido[1,2-a]pyrazin-7-yl)methanol I undergoing nucleophilic aromatic substitution with 3-chlorobenzo[d]isoxazole to furnish ((7R,9aS)-2-(benzo[d]isoxazol-3-yl)octahydro-1H-pyrido[1,2-a]pyrazin-7-yl)methanol II(R = H) as a key intermediate for a family of compounds II(R =aryl). Essential to the success of the coupling is the use of fluoride in combination with a phase transfer catalyst. The development of an alternative route to bicyclic piperazine II (R = H) that uses L-aspartic acid as a starting material to avoid the need for a classical salt resolution is described.

Organic Process Research & Development published new progress about Cyclization. 21725-69-9 belongs to class isoxazole, and the molecular formula is C7H5NO2, Application In Synthesis of 21725-69-9.

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Uno, Hitoshi; Kurokawa, Mikio published the artcile< Studies on 3-substituted 1,2-benzisoxazole derivatives. IV. Rearrangement of N-substituted 2H-1,2-benzisoxazolin-3-one to 2-substituted 2H-1,3-benzoxazin-4-one>, Recommanded Product: Benzo[d]isoxazol-3-ol, the main research area is benzoxazinone; benzisoxazolinone ring expansion rearrangement; alkylation hydroxybenzisoxazole.

The base catalyzed ring expansion of 2-substituted 2H-1,2-benzisoxazolin-3-ones I (R = Ph, CO2Me, COPh, COMe, CCH, R1 = H; R = R1 = Ph; R = CO2Et, R1 = Me) to 2-substituted 2H-1,3-benzoxazin-4-ones II occurred during the alkylation of hydroxy-1,2-benzisoxazole.

Chemical & Pharmaceutical Bulletin published new progress about Rearrangement. 21725-69-9 belongs to class isoxazole, and the molecular formula is C7H5NO2, Recommanded Product: Benzo[d]isoxazol-3-ol.

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Anand, M.; Dhanasekaran, V.; Arulprakash, G.; Guhanathan, S. published the artcile< Synthesis of 2-allylbenzo[d]isoxazol-3-(2H)-ones>, Application In Synthesis of 21725-69-9, the main research area is benzoisoxazolone allylation allyl bromide; allyl benzoisoxazolone preparation.

The reaction of Me salicylate with hydroxylamine hydrochloride provided the resp. N,2-dihydroxybenzamide, which was further treated with thionyl chloride in THF and triethylamine in 1,4-dioxan to give benzo[d]isoxazol-3-(2H)-one (I). The compound I was further treated with various allyl bromides to give the title compounds 2-allylbenzo[d]isoxazol-3-(2H)-ones.

Indian Journal of Heterocyclic Chemistry published new progress about Allylation. 21725-69-9 belongs to class isoxazole, and the molecular formula is C7H5NO2, Application In Synthesis of 21725-69-9.

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem