Heterocyclic Building Blocks-piperidine

177-11-7, 1,4-Dioxa-8-azaspiro[4.5]decane is a piperidines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a stirred solution of 2,6-dimethylbenzoic acid (2.5Og, 16.6mmol) in DCM (90ml) was added HOBT (2.29g, 16.6mmol), WSCDI (3.8Og, 19.9mmol), N-methylmorpholine (3.66ml, 33mmol) and 1 ,4- dioxa-8-azaspiro(4.5)decane (2.38g, 16.6mmol). This was stirred for 16h at RT and then the reaction was quenched by adding 1M aqueous sodium hydroxide solution (20ml). The organic layer was separated, dried over magnesium sulfate and then evaporated to leave an orange oil. Purification by column chromatography (silica, eluting with MeOH in DCM 0 – 2%) afforded the title compound as a colourless oil (3.6Og, 79%). LRMS: m/z APCI+276 [MH+]., 177-11-7

As the paragraph descriping shows that 177-11-7 is playing an increasingly important role.

Reference£º
Patent; PFIZER LIMITED; WO2007/116313; (2007); A2;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.21987-29-1,4,4-Difluoropiperidine,as a common compound, the synthetic route is as follows.

Synthesis of methyl (3R)-4-[6-(4,4-difluoropiperidin-l-yl)-2-(methylsulfanyl)pyrimidin- 4-yl]-3-methylmorpholine: Into a 40-mL microwave and maintained with an inert atmosphere of nitrogen, was placed (3R)-4-[6-chloro-2-(methylsulfanyl)pyrimidin-4-yl]-3-methylmorpholine (1 g, 3.85 mmol, 1 equiv), 4,4-difluoropiperidine (932.7 mg, 7.70 mmol, 2.0 equiv), Pd2(dba)3 (352.5 mg, 0.38 mmol, 0.10 equiv), XantPhos (445.5 mg, 0.77 mmol, 0.20 equiv), Cs2C03 (2.5 g, 7.70 mmol, 2.00 equiv), dioxane(10 ml). The resulting solution was stirred for 1 hr at 90 ¡ãC. The solids were filtered out. The combined organic layer was concentrated. The residue was applied onto a silica gel column with ethyl acetate/petroleum ether (1 :3). This resulted in 180 mg (13.57 percent) of (3R)-4-[6-(4,4-difluoropiperidin- l-yl)-2-(methylsulfanyl)pyrimidin-4-yl]-3- methylmorpholine as a white solid. LC-MS-BLV-CY-232-2: (ES, m/z): 345 [M+H]+. H-NMR- BLV-CY-232-2: (300 MHz, d6-DMSO, ppm): delta 5.73 (s, 1H), 4.42-4.31 (m, 1H), 3.97-3.87 (m, 2H), 3.71-3.68 (m, 5H), 3.56 (dd, 7 = 11.4, 2.9 Hz, 1H), 3.41 (td, 7 = 11.8, 2.8 Hz, 1H), 3.04 (td, 7 = 12.8, 3.6 Hz, 1H), 2.38 (s, 3H), 2.02-1.89 (m, 4H), 1.13 (d, 7 = 6.7 Hz, 3H)., 21987-29-1

The synthetic route of 21987-29-1 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; BLUEVALLEY PHARMACEUTICAL LLC; LI, Xiang; (99 pag.)WO2019/50889; (2019); A1;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.148763-41-1,Methyl N-Boc-piperidine-3-carboxylate,as a common compound, the synthetic route is as follows.

Step-1: Preparation of intermediate-43a; To a stirred solution of intermediate 42 (750 mg, 3.08 mmol) in THF (10 mL) was added a solution of lithium aluminum hydride in THF (1 M in THF, 2.16 mL) at 0 C. The reaction mass was stirred at 0 C. for 2 h. The reaction mass was quenched with sodium sulfate decahydrate. The reaction mass was filtered through a bed of celite and washed with ethyl acetate. The filtrate was evaporated to dryness. The residue was purified by flash column chromatography to afford intermediate 43a (660 mg, >99%)., 148763-41-1

The synthetic route of 148763-41-1 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; H. LUNDBECK A/S; US2011/92475; (2011); A1;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.92235-39-7,(S)-tert-Butyl (2-oxopiperidin-3-yl)carbamate,as a common compound, the synthetic route is as follows.

92235-39-7, A. Preparation of 1,1-dimethylethyl [(3S)-1-[2-oxo-2-(1-pyrrolidinyl)ethyl]-2-oxo-3-piperidinyl]carbamate. Lithium bis(trimethylsilyl)amide (1 N in THF, 18.9 mL, 18.9 mmol) in THF (9 mL) was added dropwise over 35 min to a solution of 1,1-dimethylethyl ((3S)-2-oxo-3-piperidinyl)carbamate (2.0 g, 9.3 mmol) in THF (160 mL) stirring at ambient temperature under argon. After stirring at ambient temperature for 15 min the reaction was cooled to 0 C. and a solution of 1-(bromoacetyl)pyrrolidine (2.0 g, 10.4 mmol) in THF (27 mL) was then added over 60 min. After stirring at 0 C. for 2 h, the reaction was quenched with 10% KHSO4 and transferred to a separatory funnel with ethyl acetate. The mixture was washed with 10% KHSO4 and brine, dried over magnesium sulfate and concentrated in vacuo to afford 4.0 g of crude product. Column chromatography (silica, acetonitrile) afforded 1,1-dimethylethyl [(3S)-1-[2-oxo-2-(1-pyrrolidinyl)ethyl]-2-oxo-3-piperidinyl]carbamate (2.0 g, 66%): 1H-NMR (CDCl3) delta 5.36 (m, 1H), 4.14 (d, J=14.1 Hz, 1H), 4.00 (m, 1 H), 3.71 (d, J=14.1 Hz, 1 H), 3.41-3.24 (m, 6 H), 2.31 (m, 1 H), 1.91-1.70 (m, 6 H), 1.61 (m, 1 H), 1.42 (s, 9 H); 13C-NMR (CDCl3) delta 170.0, 165.6, 155.6, 79.0, 51.5, 49.3, 48.6, 45.6, 45.5, 28.1, 27.6, 25.9, 23.8, 20.6.

The synthetic route of 92235-39-7 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Stein, Philip D.; O’Connor, Stephen P.; Shi, Yan; Li, Chi; US2002/25957; (2002); A1;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.135634-18-3,(2,4-Difluorophenyl)(piperidin-4-yl)methanone oxime hydrochloride,as a common compound, the synthetic route is as follows.

Potassium hydroxide (27 g) was added to 600 mL of methanol and added(2,4-difluorophenyl) – (4-piperidinyl) methanone oxime hydrochloride (55 g)Heating reaction for about 2.5 hours. Cold to room temperature, add appropriate amount of anhydrous MgSO4, stirring about 1h. The filtrate was concentrated under reduced pressure. Join500 mL of acetone, stirred at room temperature for about 0.5 h, filtered, the filtrate stirred into the hydrochloric acid to pH = 2 ~ 3, filter, dry, white solidBody 35g. The methanol content is 0.4%.

135634-18-3, The synthetic route of 135634-18-3 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Beijing Pharmaceutical Group Co., Ltd.; Wang Qichang; Liu Moyi; Liu Qingliang; Zou Jiang; Yang Yan; (9 pag.)CN106831742; (2017); A;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.324769-03-1,(3S,5R)-1-Benzyl-3,5-dimethylpiperidin-4-one,as a common compound, the synthetic route is as follows.

Phenyllithium in diisopropyl ether (2 M, 34.5 mL, 690 mmol) was added dropwise to a stirred solution of (3R,5S)-1-benzyl-3,5-dimethylpiperidin-4-one, from preparation 14 (10.0 g, 46 mmol) in anhydrous diethyl ether (150 mL) at -78 C. The mixture was stirred for a further 30 minutes at -78 C., before saturated aqueous ammonium chloride solution (10 mL) was added and the mixture was allowed to warm to room temperature. The organic layer was separated, washed with water (3¡Á200 mL) and dried over sodium sulfate, and then filtered. The solvent was then evaporated to give the crude (3R,4s,5S)-1-benzyl-3,5-dimethyl-4-phenylpiperidin-4-ol (12.8 g) as a white solid. The crude compound was >95% pure by 1H NMR and used directly in preparation 21. LC-MS (ESI+): 296 (M+H); 11H NMR (400 MHz, CD3OD) delta 0.51 (d, 6H), 2.18 (m, 2H), 2.30 (m, 2H), 2.42 (m, 2H), 3.6 (s, 2H), 7.15 (m, 1H), 7.35 (m, 9H)., 324769-03-1

As the paragraph descriping shows that 324769-03-1 is playing an increasingly important role.

Reference£º
Patent; Pfizer Inc; US2005/176772; (2005); A1;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1022150-11-3,(R)-tert-Butyl 3-(4-amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)piperidine-1-carboxylate,as a common compound, the synthetic route is as follows.

Compound (IV) (Pgi = Pg2 = Boc) (2.93 g, 5 mmol) was dissolved in MeOH (15 ml), then 33% HC1 (3 ml) was added, and the reaction mass was heated at 50C for 4 st with intensive stirring (note: a foam is forming during the reaction due to isolation of gaseous by-products). After completion of the reaction the resulting solution was cooled to room temperature and evaporated to dryness (note: the vapor contains HC1). Saturated Na2CO3 solution (5 ml) was added to the dry residue and the mixture was extracted with EtOAc (3 x 10 ml). The extract was dried over Na2SO4 and evaporated in vacuum. Yield 1.89 g (98%), white amorphous mass., 1022150-11-3

As the paragraph descriping shows that 1022150-11-3 is playing an increasingly important role.

Reference£º
Patent; LATVIAN INSTITUTE OF ORGANIC SYNTHESIS; LEBEDEVS, Antons; PONOMARJOVS, Jurijs; VARACEVA, Larisa; CERNAKS, Dmitrijs; CERNOBROVIJS, Aleksandrs; LAVRINOVICS, Edvards; (15 pag.)WO2017/39425; (2017); A1;,
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Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In a patent, 160809-38-1, molecular formula is C16H21NO4, introducing its new discovery., 160809-38-1

CASPASE INHIBITOR AND PHARMACEUTICAL COMPOSITION, USE AND THERAPEUTIC METHOD THEREOF

Disclosed are a class of compounds as a caspase inhibitor, and in particular the compound as shown in formula (I) or a pharmaceutically acceptable salt thereof, and the use of the compound in treating caspase-related diseases.

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Chemistry is traditionally divided into organic and inorganic chemistry. 183483-09-2. The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent£¬Which mentioned a new discovery about 183483-09-2

HETEROCYCLIC ANALGESIC COMPOUNDS AND METHODS OF USE THEREOF

One aspect of the present invention relates to novel heterocyclic compounds. A second aspect of the present invention relates to the use of the novel heterocyclic compounds as ligands for various cellular receptors, including opiate receptors, other G-protein-coupled receptors, and ion channels. An additional aspect of the present invention relates to the use of the novel heterocyclic compounds as analgesics.

The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 183483-09-2 is helpful to your research. 183483-09-2

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Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent£¬Which mentioned a new discovery about 287192-97-6, molcular formula is C12H19NO2, introducing its new discovery. , 287192-97-6

2,5-DIOXOIMIDAZOLIDIN-4-YL ACETAMIDES AND ANALOGUES AS INHIBITORS OF METALLOPROTEINASE MMP12

The invention provides compounds of formula (I) in which L, X, Y, Z1, Z2, R1, R2, R3 and G2 have the meanings defined in the specification; processes for their preparation; pharmaceutical compositions containing them; a process for preparing the pharmaceutical compositions; and their use in therapy. The compounds of the invention are inhibitors of metalloproteinase MMP12 and are among other things useful for the treatment of obstructive airways diseases, such as asthma and chronic obstructive pulmonary disease (COPD).

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