Heterocyclic Building Blocks-Thiazolidine

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1438-16-0,3-Aminorhodanine,as a common compound, the synthetic route is as follows.

EXAMPLE 30 A solution of rhodanine-3-carbamoylsulphonyl chloride which is obtained if a solution of 3.11 g of 3-aminorhodanine in 50 ml of acetonitrile is added to a solution of 1.8 ml of chlorosulphonylisocyanate in 50 ml acetonitrile and the mixture is stirred for 40 minutes at 25 C, is reacted, analogously to Example 5, with a silyl ester solution as in Example 5 (approx. 1.5 mmols of silyl ester), and worked up. The resulting crude product, in acetone solution, is decolourised with active charcoal and then converted by means of sodium alpha-ethylhexanoate into the sodium salt of 6-[D-alpha-(rhodanine-3-carbamylsulphamylamino)-phenylacetamido]-penicillanic acid. In a thin layer chromatogram on silica gel, Rf52 = 0.56; Rf96 = 0.76; Rf100 = 0.20; Rf110 = 0.28. [alpha]D20 = + 110 +- 1 (c = 1 in 0.5 N NaHCO3).

1438-16-0, As the paragraph descriping shows that 1438-16-0 is playing an increasingly important role.

Reference£º
Patent; Ciba-Geigy Corporation; US3996208; (1976); A;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.7025-19-6,3-(4-Oxo-2-thioxothiazolidin-3-yl)propanoic acid,as a common compound, the synthetic route is as follows.,7025-19-6

The above-prepared compound A29 and 1.1 equivalents of rhodamine 3-propionic acid were dissolved in ethanol, one equivalent of pyridine was added, and the reaction was carried out at 80 C. for 4 hours. After the reaction was completed, the mixture was cooled to room temperature to precipitate a yellow solid, which was filtered by suction and used as a filter cake. After washing with dilute hydrochloric acid, washing with water, infrared drying, and recrystallization from ethanol gave a yellow solid with a yield of 81%.

As the paragraph descriping shows that 7025-19-6 is playing an increasingly important role.

Reference£º
Patent; Guangdong University of Technology; Du Zhiyun; Li Penghui; Jiang Hong; Zhang Wenjin; Chen Huixiong; Dong Changzhi; Zheng Xi; Zhang Kun; (35 pag.)CN107698579; (2018); A;,
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As a common heterocyclic compound, it belong thiazolidine compound,Thiazolidin-2-one,2682-49-7,Molecular formula: C3H5NOS,mainly used in chemical industry, its synthesis route is as follows.,2682-49-7

[0050] To a solution of 2-thiazolidinone (4.15 g, 40.18 mmol) in acetonitrile (60 ml) were added potassium carbonate (13.3 g 96.2 mmol), N,N-dimethyl-3-aminopropyl chloride hydrochloride (7.63 g, 48.3 mmol), and 18-crown-6 (catalytic amount). The mixture was refluxed for 18 hours, solvent removed in vacuo, then redissolved in dichloromethane and 1 M potassium chloride (40 ml each). The aqueous phase was isolated and extracted twice with 30 ml portions of dichloromethane. The combined organic fraction was washed with saturated sodium chloride (50 ml), dried over sodium sulfate, filtered, and dried in vacuo. The crude product was purified via silica gel chromatography, using a 10:1 ratio of silica gel A, 200-425 mesh, and eluting with 5% methanol in chloroform, yielding 1.15 g (15%) pure product.

With the synthetic route has been constantly updated, we look forward to future research findings about Thiazolidin-2-one,belong thiazolidine compound

Reference£º
Patent; Roberts, Jeannette C.; Wilmore, Britta H.; Cassidy, Pamela B.; Dominick, Pamela K.; Short, Megan D.; US2003/225255; (2003); A1;,
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1438-16-0, 3-Aminorhodanine is a thiazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,1438-16-0

General procedure: A mixture of isothiocyanatobenzenesulfonamide 2 [32](0.01mol) and heterocyclic amine (0.01mol) in dioxane (30mL) containing triethylamine (0.1mL) was refluxed for 1h. The solvent was evaporated under reduced pressure and the solid obtained was filtered, washed with petroleum ether (bp 40-60C) and crystallized from ethanol to afford the thiourea derivatives.

As the paragraph descriping shows that 1438-16-0 is playing an increasingly important role.

Reference£º
Article; Ghorab, Mostafa M.; Alsaid, Mansour S.; El-Gaby, Mohamed S.A.; Safwat, Nesreen A.; Elaasser, Mahmoud M.; Soliman, Aiten M.; European Journal of Medicinal Chemistry; vol. 124; (2016); p. 299 – 310;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1438-16-0,3-Aminorhodanine,as a common compound, the synthetic route is as follows.,1438-16-0

General procedure: A mixture of aminorhodanine (1 mmol), isatin (1 mmol) and 5 muL of acetic acid in 2mL of distilled ethanol was placed in a cylindrical quartz reactor (Phi = 4 cm). The reactor was introducedinto a monomode microwave (Anton Paar) apparatus, for 5 min at100 C and 50 Watts. The crude reaction mixture was allowed tocool down at room temperature and ethanol (10 mL) or mixture of H2O/EtOH (10 mL) was directly added in the cylindrical quartzreactor. The resulting precipitated product was filtered off and waspurified by recrystallization from ethanol if necessary.

1438-16-0 3-Aminorhodanine 74033, athiazolidine compound, is more and more widely used in various fields.

Reference£º
Article; Khaldoun, Khadidja; Safer, Abdelmounaim; Boukabcha, Nourdine; Dege, Necmi; Ruchaud, Sandrine; Souab, Mohamed; Bach, Stephane; Chouaih, Abdelkader; Saidi-Besbes, Salima; Journal of Molecular Structure; vol. 1192; (2019); p. 82 – 90;,
Thiazolidine – Wikipedia
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As a common heterocyclic compound, it belong thiazolidine compound,(R)-2-Oxothiazolidine-4-carboxylic acid,19771-63-2,Molecular formula: C4H5NO3S,mainly used in chemical industry, its synthesis route is as follows.,19771-63-2

16(a) (4R)-N-(2-Hydroxyethyl)-2-oxothiazolidine-4-carboxamide 0.9 ml of oxalyl chloride and one drop of N,N-dimethylformamide were added to a suspension of 1.0 g of (4R)-2-oxothiazolidine-4-carboxylic acid in 20 ml of benzene, and the resulting mixture was stirred at room temperature for 1.5 hours. At the end of this time, the solvent was removed by distillation under reduced pressure. A solution of the residual pale yellow oil dissolved in 10 ml of methylene chloride was then added dropwise to a solution of 1.25 g of 2-ethanolamine in 25 ml of methylene chloride, whilst ice-cooling, and the mixture was stirred for 1.5 hours, whilst ice-cooling. The solvent was then removed by distillation under reduced pressure, and the resulting residue was purified by column chromatography through silica gel, using a 9:1 by volume mixture of methylene chloride and methanol as the eluent. The colorless crystals thus obtained were further recrystallized from ethyl acetate, to give 0.65 g of the title compound as colorless plates, melting at 116-118 C. Nuclear Magnetic Resonance Spectrum (CDCl3 +hexadeuterated dimethyl sulfoxide) delta ppm:

With the synthetic route has been constantly updated, we look forward to future research findings about (R)-2-Oxothiazolidine-4-carboxylic acid,belong thiazolidine compound

Reference£º
Patent; Sankyo Company, Limited; US5298516; (1994); A;,
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As a common heterocyclic compound, it belong thiazolidine compound,3-Aminorhodanine,1438-16-0,Molecular formula: C3H4N2OS2,mainly used in chemical industry, its synthesis route is as follows.,1438-16-0

General procedure: A mixture of aminorhodanine (1 mmol), isatin (1 mmol) and 5 muL of acetic acid in 2mL of distilled ethanol was placed in a cylindrical quartz reactor (Phi = 4 cm). The reactor was introducedinto a monomode microwave (Anton Paar) apparatus, for 5 min at100 C and 50 Watts. The crude reaction mixture was allowed tocool down at room temperature and ethanol (10 mL) or mixture of H2O/EtOH (10 mL) was directly added in the cylindrical quartzreactor. The resulting precipitated product was filtered off and waspurified by recrystallization from ethanol if necessary.

With the synthetic route has been constantly updated, we look forward to future research findings about 3-Aminorhodanine,belong thiazolidine compound

Reference£º
Article; Khaldoun, Khadidja; Safer, Abdelmounaim; Boukabcha, Nourdine; Dege, Necmi; Ruchaud, Sandrine; Souab, Mohamed; Bach, Stephane; Chouaih, Abdelkader; Saidi-Besbes, Salima; Journal of Molecular Structure; vol. 1192; (2019); p. 82 – 90;,
Thiazolidine – Wikipedia
Thiazolidine – ScienceDirect.com

As a common heterocyclic compound, it belong thiazolidine compound,(S)-4-Phenylthiazolidine-2-thione,185137-29-5,Molecular formula: C9H9NS2,mainly used in chemical industry, its synthesis route is as follows.,185137-29-5

Add 1000 ml of dichloromethane and 500 ml (3.6 mol) of triethylamine to a 5-liter four-necked flask.Phenylthiooxazolidinone 195g (1mol), propionic acid 80g (1.1mol),Add 1000g (1mol) of 2-chloropyridine p-toluenesulfonic acid methyl salt to 1000mlThe dichloromethane solution was added and stirred at 25 C for 5 hours.TLC showed complete reaction, adding water to extract the reaction, followed by water,Saturated brine, the organic phase was washed with anhydrous sodium sulfate and concentrated.Recrystallization gave 240 g of product with a yield of 95.6%.HPLC purity >99%.

With the synthetic route has been constantly updated, we look forward to future research findings about (S)-4-Phenylthiazolidine-2-thione,belong thiazolidine compound

Reference£º
Patent; Shanghai Lark Pharmaceutical Technology Co., Ltd.; Shen Xin; Yang Jidong; Hu Xiaochuan; Li Feng; (6 pag.)CN109020913; (2018); A;,
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7025-19-6,7025-19-6, 3-(4-Oxo-2-thioxothiazolidin-3-yl)propanoic acid is a thiazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: A mixture of the selected aldehyde (0.75 mmol), 3-(2?- hydroxycarbonylethyl)-2-thioxothiazolidin-4-one (0.75 mmol, 159 mg) and anhydrous sodium acetate (2.25 mmol, 187 mg) in glacial acetic acid (0.75 mL) was thoroughly mixed in an appropriate 10 mL thick-walled glass vial. This was tightly sealed with a Teflon cap and the reaction mixture was stirred and heated at 140 C for 5 minutes, under focused microwave irradiation, with an initial power setting of 75 W. After cooling to room temperature, the yellow solid that precipitated from the crude product mixture was washed with distilled water, filtered under reduced pressure, recrystallized from dichloromethane and dried at room temperature under vacuum, yielding the desired compound as a bright-yellow solid. See, e.g., Figure 1. Yield: 83%, 215 mg; mp (C): 216-217; FT-JR (v, cm?): 3512, 3012, 1691, 1585, 1520, 1441, 1429, 1386,1314, 1253, 1218, 1171, 1152, 1106, 1075, 1025, 1005, 993, 937, 916, 873, 845, 792,734, 710, 622, 597, 566, 557, 536, 500; UV-vis (CH3OH): Xfflax, nm (relative absorbance, = 283 (70.3), 388 (100), 453 (17.2); ?H NMR (400 MHz, (CD3)2SO/CCL): oe, ppm =7.67 (1H, s, CH), 7.19 (2H, d, J= 7.6 Hz, ArH), 4.27 (2H, t, J= 7.8 Hz,NCH2CH2CO2H), 2.61 (2H, t, J= 7.8 Hz, NCH2CH2CO2H); ?3C NMR (100 MHz,(CD3)2SO/CCL): oe,ppm= 191.9, 171.1, 166.3, 152.3 (dd,J= 243.3 and 7.6 Hz), 137.1(t, J= 16.1 Hz), 131.4, 122.9 (t, J= 8.6 Hz), 120.9, 113.9 (dd, J= 15.2 and 7.4 Hz), 39.7,30.6; HR-MS (EJ): mlz = 344.9946 (M, C,3H9F2N0452 required 344.9941).

7025-19-6 3-(4-Oxo-2-thioxothiazolidin-3-yl)propanoic acid 81492, athiazolidine compound, is more and more widely used in various fields.

Reference£º
Patent; BSIM2 ? BIOMOLECULAR SIMULATIONS LDA; PONTES MEIRELES FERREIRA DE BRITO, Rui Manuel; VIEIRA SIMOES, Carlos Jose; DE VASCONCELOS DIAS DE PINHO MELO, Teresa Margarida; DA SILVA VICTOR, Bruno Lourenco; LOURENCO DE ALMEIDA, Zaida Catarina; CABRAL LOPES, Ana Lucia; OLIVEIRA NASCIMENTO, Bruno Filipe; (182 pag.)WO2016/80853; (2016); A1;,
Thiazolidine – Wikipedia
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As a common heterocyclic compound, it belong thiazolidine compound,3-(4-Oxo-2-thioxothiazolidin-3-yl)propanoic acid,7025-19-6,Molecular formula: C6H7NO3S2,mainly used in chemical industry, its synthesis route is as follows.,7025-19-6

General procedure: To a solution of 1,3-diaryl-4-formylpyrazoles 4 (1.0 mmol) and rhodanine analogs 5 (1.0 mmol) in absolute ethanol (8.0 mL) was added drops of acetic acid and piperidine. The reaction mixture was stirred at 40-50 C, until the completion of the reaction as evidenced by TLC. After the solution was cooled, the resulting reaction mixture was ltered off and crude product was purified by 95% ethanol to afford pure products 6-29. The yield, melting point and spectral data of each compound are given below.

With the synthetic route has been constantly updated, we look forward to future research findings about 3-(4-Oxo-2-thioxothiazolidin-3-yl)propanoic acid,belong thiazolidine compound

Reference£º
Article; Xu, Li-Li; Zheng, Chang-Ji; Sun, Liang-Peng; Miao, Jing; Piao, Hu-Ri; European Journal of Medicinal Chemistry; vol. 48; (2012); p. 174 – 178;,
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