Category: piperidines

Liu, Xuwen published the artcileSynthesis and structure-activity relationships of thieno[2,3-d]pyrimidines as atypical protein kinase C inhibitors to control retinal vascular permeability and cytokine-induced edema, COA of Formula: C10H20N2O2, the main research area is structure preparation thieno pyrimidine derivative aPKC retinal vascular permeability; Blinding eye diseases; Homology model; SAR; Thieno[2,3-d]pyrimidine inhibitors; Tumor necrosis factor-α (TNFα); Vascular endothelial growth factor (VEGF); Vascular permeability; atypical protein kinase C (aPKC).

Studies demonstrate that small mol. targeting of atypical protein kinase C (aPKC) may provide an effective means to control vascular permeability, prevent edema, and reduce inflammation providing novel and important alternatives to anti-VEGF therapies for certain blinding eye diseases. Based on a literature tricyclic thieno[2,3-d]pyrimidine lead (1), an ATP-competitive inhibitor of the aPKC iota (ι) and aPKC zeta (ζ) isoforms, we have synthesized a small series of compounds in 1-2 steps from a readily available chloro intermediate. A single pyridine congener was also made using 2D NMR to assign regiochem. Within the parent pyrimidine series, a range of potencies was observed against aPKCζ whereas the pyridine congener was inactive. Selected compounds were also tested for their effect toward VEGF-induced permeability in BREC cells. The most potent of these (7l) was further assayed against the aPKCι isoform and showed a favorable selectivity profile against a panel of 31 kinases, including kinases from the AGC superfamily, with a focus on PKC isoforms and kinases previously shown to affect permeability. Further testing of 7l in a luciferase assay in HEK293 cells showed an ability to prevent TNF-α induced NFκB activation while not having any effect on cell survival. Intravitreal administration of 7l to the eye yielded a complete reduction in permeability in a test to determine whether the compound could block VEGF- and TNFα-induced permeability across the retinal vasculature in a rat model. The compound in mice displayed good microsomal stability and in plasma moderate exposure (AUC and Cmax), low clearance, a long half-life and high oral bioavailability. With IV dosing, higher levels were observed in the brain and eye relative to plasma, with highest levels in the eye by either IV or PO dosing. With a slow oral absorption profile, 7l accumulates in the eye to maintain a high concentration after dosing with higher levels than in plasma. Compound 7l may represent a class of aPKC inhibitors for further investigation.

Bioorganic & Medicinal Chemistry published new progress about Anti-inflammatory agents. 73874-95-0 belongs to class piperidines, name is tert-Butyl piperidin-4-ylcarbamate, and the molecular formula is C10H20N2O2, COA of Formula: C10H20N2O2.

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Freifelder, Morris published the artcileNuclear magnetic resonance spectra of some N-substituted methylamines. II. Effect of acidic conditions, Quality Control of 1690-74-0, the main research area is .

cf. CA 64, 4478f. The N.M.R. spectra of a number of N-substituted methylamines in acidic media are examined Among those studied–RNHCH3 (R is alkyl, aralkyl, cyclic, or cycloalkyl)–the N-methyl signal is a triplet (J = 5.5 cps.) when the spectra are run in various solvents to which hydrochloric acid is added to pH 1.0 or below. Under similar conditions, the spectra of tertiary N-methylamines, where one of the above R groups is substituted for H, show the N-methyl signal as a doublet (J = 4-5.5 cps.). Splitting of the signal among saturated N-methyl heterocycles is observed in strongly acidified solvent only when one N atom is part of the heterocyclic system. In neutral solvent, the spectra of the aforementioned compounds show a single peak for the N-methyl protons in every instance. In the piperazine series, if one ring N is acylated and the spectrum of the 1-acyl-4-methylpiperazine is ran in trifluoroacetic acid, the N-methyl signal is seen as a doublet, otherwise a single peak is noted among other N-methylpiperazines. An attempt is made to classify N-substituted methylamines by means of the N-methyl signal in their spectra in neutral solvent and various acidic media.

Journal of Organic Chemistry published new progress about NMR (nuclear magnetic resonance). 1690-74-0 belongs to class piperidines, name is Methyl 1-methylpiperidine-2-carboxylate, and the molecular formula is C8H15NO2, Quality Control of 1690-74-0.

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Desai, Umang published the artcileA comparison of evolution of adhesion mechanisms and strength post damp-heat aging for a range of VA content in EVA encapsulant with photovoltaic backsheet, Application In Synthesis of 52829-07-9, the main research area is ethylene vinyl acetate film fabrication adhesion strength.

Ethylene vinyl acetate (EVA) is an effective encapsulant to adhere various layers in the photovoltaic (PV) module. In this study, we have fabricated EVA films containing different vinyl acetate (VA) content (18%, 24%, 33% and 40%) and laminated between two layers of backsheet (BS). These laminates have been subjected to damp-heat (DH) ageing at 85OC and 85% relative humidity (RH) for 1000 h to evaluate the change in adhesion strength at EVA/BS interface using the T-peel test. The adhesion strength for EVA containing 18% VA content has been found to improve but it deteriorates for EVA with 33 and 40% VA content after ageing. However, adhesion strength for EVA containing 24% VA content is found unaffected after ageing. The degree of crosslinking and VA content have been determined through gel content measurement and thermo-gravimetric anal. (TGA) resp. The degree of crosslinking and VA content increases significantly in EVA18 but decreases in EVA40 due to DH ageing. The chem. changes have been examined by the Fourier transform IR spectroscopy (FTIR) and the XPS. The failure mode (cohesive or delamination) at the interface and its correlation with the adhesion strength has been explored using XPS. The failure mode at the EVA18/BS interface alters from delamination type in pristine condition to the cohesive type due to DH ageing. However, the failure mode for EVA24 and EVA40 is found to be cohesive in both the pristine and aged condition.

Solar Energy published new progress about Adhesion, physical, interfacial. 52829-07-9 belongs to class piperidines, name is Bis(2,2,6,6-tetramethylpiperidin-4-yl) decanedioate, and the molecular formula is C28H52N2O4, Application In Synthesis of 52829-07-9.

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Slouf, Miroslav published the artcileProoxidant activity of phenolic stabilizers in polyolefins during accelerated photooxidation, Recommanded Product: Bis(2,2,6,6-tetramethylpiperidin-4-yl) decanedioate, the main research area is prooxidant phenolic stabilizer polyolefin accelerated photooxidation.

Polymer plaques made of high d. polyethylene (HDPE) and of two types of cycloolefin copolymer (COC) differing in glass transition temperature, were stabilized with 0.2 or 1.0 weight % of natural (α-tocopherol) or synthetic (Irganox 1010) phenolic stabilizer or hindered amine stabilizer (Tinuvin 770) and aged using accelerated weathering technique (WOM). The efficiency of the phenolic stabilizers was compared among themselves and with well-established Tinuvin770. Concentration profiles of radicals generated inside polymer plaques during WOM exposure were determined by ESRI, profiles of oxidation products and crystallinity inside the HDPE plaques were determined by IR microspectroscopy, oxidation products in COC copolymers were identified using ATR, the changes of local mech. properties of the polymer plaques were characterized using microindentation hardness testing, and their morphol. was studied by light and/or SEM. All the techniques evidenced high stability of neat COC against photooxidation processes, whereas neat HDPE exhibited fast photooxidation of the surface layers. Tinuvin770 was found to provide long term protection to both HDPE and COC against photodegradation In contrast, the same polymers stabilized with the natural phenolic antioxidant α-tocopherol (the most active component of vitamin E) or synthetic phenolic antioxidant Irganox1010 exhibited an increase in the surface oxidation in comparison with the neat polymers during WOM exposure, proving prooxidant activity of phenolic stabilizers during WOM exposure in all polymers studied. The prooxidant activity α-tocopherol was stronger in comparison with Irganox1010. We conclude that neither of the two phenolic stabilizers was able to provide long term protection of the investigated polymers against photooxidation

Polymer Degradation and Stability published new progress about Aging of materials, accelerated. 52829-07-9 belongs to class piperidines, name is Bis(2,2,6,6-tetramethylpiperidin-4-yl) decanedioate, and the molecular formula is C28H52N2O4, Recommanded Product: Bis(2,2,6,6-tetramethylpiperidin-4-yl) decanedioate.

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Christmann, Julien published the artcilePhotostabilization of polyethylene by a hindered amine light stabilizer in blooming conditions and impact of MDO processing, HPLC of Formula: 52829-07-9, the main research area is polyethylene light stabilizer MDO processing photostabilization property.

The effect of machine direction orientation (MDO) processing on the photostabilization of LLDPE samples containing Tinuvin 770 was studied. The amount of Tinuvin 770 in the processed samples was deliberately chosen at a level higher than the reported solubility at ambient temperature for two main reasons: the first reason was to assess the equilibrium between the soluble and nonsol. forms of this additive and the impact of the MDO process, and the second was to demonstrate the role of a higher temperature in accelerated artificial photoaging on the protective role played by the nonsol. part. The results reported in this article show that at room temperature, a nonnegligible amount of Tinuvin 770 precipitates at the surface, which is commonly termed blooming. However, the additive that bloomed at the surface can be dissolved within the polymer with increasing temperature, which is the case in the conditions of accelerated artificial photoaging but not the case of natural outdoor weathering. Such phys. phenomena are responsible for a possible bias brought by temperature during accelerated photoaging, which can affect aging tests. This questions the representativeness of accelerated aging at higher temperatures for polymers containing a blooming stabilizer.

Polymer Degradation and Stability published new progress about Aging of materials, accelerated. 52829-07-9 belongs to class piperidines, name is Bis(2,2,6,6-tetramethylpiperidin-4-yl) decanedioate, and the molecular formula is C28H52N2O4, HPLC of Formula: 52829-07-9.

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Du, Qianming published the artcileDiscovery of phosphonamidate IDO1 inhibitors for the treatment of non-small cell lung cancer, SDS of cas: 73874-95-0, the main research area is phosphonamidate IDO1 inhibitor preparation antitumor human lung non small; Epacadostat; IDO1 inhibitors; IDO2; Phosphonamidate ester; TDO.

Targeting indoleamine 2,3-dioxygenase 1 (IDO1) has been identified as an attractive approach for the development of cancer immunotherapy. In this study, a series of phosphonamidate ester containing compounds were designed, synthesized and evaluated for their inhibitory activities against IDO1. Among them, compounds 16, 17, and 26 with good IDO1 inhibitory (HeLa IDO1 IC50 = 10-21 nM, hIDO1 IC50 = 78-121 nM) activities were selected for further investigation and showed good physicochem. properties. Furthermore, based on comparable PK profile and excellent IDO2/TDO inhibitory potency, representative compound 16 was selected for further bio-evaluation and characterized with good efficacy in suppressing lung metastasis (77% inhibition rate) of Lewis cells in vivo. Thus, compound 16 could be a potential and efficacious agent for further evaluation.

European Journal of Medicinal Chemistry published new progress about Antitumor agents (cervix, lung). 73874-95-0 belongs to class piperidines, name is tert-Butyl piperidin-4-ylcarbamate, and the molecular formula is C10H20N2O2, SDS of cas: 73874-95-0.

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Tanaka, Akito published the artcileStudies on anti-platelet agents. IV. A series of 2-substituted 4,5-bis(4-methoxyphenyl)pyrimidines as novel anti-platelet agents, Formula: C12H20Cl2N2, the main research area is pyrimidine bismethoxyphenyl antiplatelet agent; vasodilatory activity pyrimidine bismethoxyphenyl; cyclooxygenase inhibitor pyrimidine bismethoxyphenyl.

The syntheses and structure-activity relationships of a series of 2-substituted 4,5-bis(4-methoxyphenyl)pyrimidines, designed on the basis of structural analyses of several cyclooxygenase (CO) inhibitors, and their derivatives as anti-platelet agents based on CO inhibition are described. Among them, 4,5-bis(4-methoxyphenyl)-2-morpholinopyrimidine and 4,5-bis(4-methoxyphenyl)-2-(3,5-dimethylmorpholin-4-yl)pyrimidine showed potent inhibitory activity on malondialdehyde, formed by the CO-catalyzed oxygenation of arachidonic acid (A.A.) in prostanoids, production in vitro (73.4% inhibition at 10-8 M and IC50 = 1.4 × 10-8 M, resp.). Certain compounds were also examined in ex vivo studies. Of these compounds, 4,5-bis(4-methoxyphenyl)-2-(1-methyl-1,2,3,6,-tetrahydropyrid-4-yl)pyrimidine (11a) exhibited potent and long-lasting anti-platelet activity ex vivo, i.e., 11a showed 97% inhibition of platelet aggregation induced by A.A. even 24 h after oral administration of 3.2 mg/kg in guinea pigs, and 60-70% inhibition at 6 h after lower doses (1.0 mg/kg). The ex vivo activity of 11a is more than three times that of aspirin (aspirin showed 81% inhibitory activity on platelet aggregation induced by A.A. at 6 h after oral administration at 10 mg/kg is this study). Compound 11a also showed vasodilatory activity (ED50 = 5.3 × 10-6 M, while aspirin has no vasodilatory activity at 6.0 × 10-4 M).

Chemical & Pharmaceutical Bulletin published new progress about Platelet aggregation inhibitors. 1205-72-7 belongs to class piperidines, name is 1-Benzylpiperidin-4-amine dihydrochloride, and the molecular formula is C12H20Cl2N2, Formula: C12H20Cl2N2.

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Tata, James R. published the artcileThe synthesis and activity of spiroindane growth hormone secretagogues, Synthetic Route of 137419-24-0, the main research area is spiroindane preparation growth hormone secretagogue structure.

The synthesis and activities of a series of spiroindane growth hormone secretagogues is reported. Modification of the benzylic position of the spiroindane has resulted in a dramatic increase in potency resulting in sub-nanomolar peptidomimetic growth hormone secretagogues. In vivo data demonstrating the good oral activity of these analogs is reported.

Bioorganic & Medicinal Chemistry Letters published new progress about Structure-activity relationship. 137419-24-0 belongs to class piperidines, name is tert-Butyl spiro[indene-1,4′-piperidine]-1′-carboxylate, and the molecular formula is C18H23NO2, Synthetic Route of 137419-24-0.

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Ren, Chaowei published the artcileStructure-based discovery of SIAIS001 as an oral bioavailability ALK degrader constructed from Alectinib, Name: tert-Butyl piperidin-4-ylcarbamate, the main research area is anaplastic lymphoma kinase alectinib preparation anticancer oral bioavailability; Alectinib; Anaplastic large-cell lymphomas; Anaplastic lymphoma kinase; CRBN; Oral bioavailability; Proteolysis targeting chimeras.

Fusion proteins of the anaplastic lymphoma kinase (ALK) are promising therapeutic targets for cancer and other human diseases, especially for non-small cell lung cancer (NSCLC) and anaplastic large-cell lymphomas (ALCLs). Herein a structure-based design, synthesis, and evaluation of ALK PROTACs (proteolysis-targeting chimeras) based on Alectinib, as the warhead were described. CRBN ligands as the E3 ligase moiety were screened first, used to obtain a series of potent ALK degraders based on different CRBN ligands, and exemplified by SIAIS091 and SIAIS001 with lenalidomide/thalidomide-based linkers. Both of them induced effective ALK degradation at low nanomolar concentrations in cells, and showed much better growth inhibition effects than Alectinib. SIAIS091 or SIAIS001 also promoted cell cycle arrest in G1/S phase. Finally, SIAIS001 exhibited good oral bioavailability in Pharmacokinetics study.

European Journal of Medicinal Chemistry published new progress about Anaplastic large-cell lymphoma. 73874-95-0 belongs to class piperidines, name is tert-Butyl piperidin-4-ylcarbamate, and the molecular formula is C10H20N2O2, Name: tert-Butyl piperidin-4-ylcarbamate.

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Bongard, Jens published the artcileChemical Validation of DegS As a Target for the Development of Antibiotics with a Novel Mode of Action, Recommanded Product: tert-Butyl piperidin-4-ylcarbamate, the main research area is DegS drug target antibiotic preparation; antibiotics; drug discovery; small molecules; synergism; synthesis.

Despite the availability of hundreds of antibiotic drugs, infectious diseases continue to remain one of the most notorious health issues. In addition, the disparity between the spread of multidrug-resistant pathogens and the development of novel classes of antibiotics exemplify an important unmet medical need that can only be addressed by identifying novel targets. Herein we demonstrate, by the development of the first in vivo active DegS inhibitors based on a pyrazolo[1,5-a]-1,3,5-triazine scaffold, that the serine protease DegS and the cell envelope stress-response pathway σE represent a target for generating antibiotics with a novel mode of action. Moreover, DegS inhibition is synergistic with well-established membrane-perturbing antibiotics, thereby opening promising avenues for rational antibiotic drug design.

ChemMedChem published new progress about Antibacterial agent resistance. 73874-95-0 belongs to class piperidines, name is tert-Butyl piperidin-4-ylcarbamate, and the molecular formula is C10H20N2O2, Recommanded Product: tert-Butyl piperidin-4-ylcarbamate.

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem