- Precious-Metal-Free Heteroarylation of Azlactones: Direct Synthesis of α-Pyridyl, α-Substituted Amino Acid Derivatives
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A one-pot, three-component synthesis of α-pyridyl, α-substituted amino acid derivatives is described. The key transformation is a direct, precious-metal-free heteroarylation of readily available, amino acid derived azlactones with electrophilically activated pyridine N-oxides. The resulting intermediates can be used directly as efficient acylating agents for a range of nucleophiles, leading to the heteroarylated amino acid derivatives in a single vessel.
- Johnson, Tarn C.,Marsden, Stephen P.
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- ARYLMETHYLENE HETEROCYCLIC COMPOUNDS AS KV1.3 POTASSIUM SHAKER CHANNEL BLOCKERS
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A compound of Formula (I) or a pharmaceutically acceptable salt thereof is described, wherein the substituents are as defined herein. Pharmaceutical compositions comprising the same and method of using the same are also described.
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Paragraph 0249; 0250
(2021/04/17)
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- Exploiting the HSP60/10 chaperonin system as a chemotherapeutic target for colorectal cancer
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Over the past few decades, an increasing variety of molecular chaperones have been investigated for their role in tumorigenesis and as potential chemotherapeutic targets; however, the 60 kDa Heat Shock Protein (HSP60), along with its HSP10 co-chaperone, have received little attention in this regard. In the present study, we investigated two series of our previously developed inhibitors of the bacterial homolog of HSP60/10, called GroEL/ES, for their selective cytotoxicity to cancerous over non-cancerous colorectal cells. We further developed a third “hybrid” series of analogs to identify new candidates with superior properties than the two parent scaffolds. Using a series of well-established HSP60/10 biochemical screens and cell-viability assays, we identified 24 inhibitors (14%) that exhibited > 3-fold selectivity for targeting colorectal cancer over non-cancerous cells. Notably, cell viability EC50 results correlated with the relative expression of HSP60 in the mitochondria, suggesting a potential for this HSP60-targeting chemotherapeutic strategy as emerging evidence indicates that HSP60 is up-regulated in colorectal cancer tumors. Further examination of five lead candidates indicated their ability to inhibit the clonogenicity and migration of colorectal cancer cells. These promising results are the most thorough analysis and first reported instance of HSP60/10 inhibitors being able to selectively target colorectal cancer cells and highlight the potential of the HSP60/10 chaperonin system as a viable chemotherapeutic target.
- Ray, Anne-Marie,Salim, Nilshad,Stevens, Mckayla,Chitre, Siddhi,Abdeen, Sanofar,Washburn, Alex,Sivinski, Jared,O'Hagan, Heather M.,Chapman, Eli,Johnson, Steven M.
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- Synthesis of Novel Aryloxyethylamine Derivatives and Evaluation of Their in Vitro and in Vivo Neuroprotective Activities
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A series of aryloxyethylamine derivatives were designed, synthesized and evaluated for their biological activity. Their structures were confirmed by 1H-NMR, 13C-NMR, FT-IR and HR-ESI-MS. The preliminary screening of neuroprotection of compounds in vitro was detected by MTT, and the anti-ischemic activity in vivo was tested using bilateral common carotid artery occlusion in mice. Most of these compounds showed potential neuroprotective effects against the glutamate-induced cell death in differentiated rat pheochromocytoma cells (PC12 cells), especially for (4-fluorophenyl){1-[2-(4-methoxyphenoxy)ethyl]piperidin-4-yl}methanone, {1-[2-(4-methoxyphenoxy)ethyl]piperidin-4-yl}(4-methoxyphenyl)methanone, (4-bromophenyl){1-[2-(4-methoxyphenoxy)ethyl]piperidin-4-yl}methanone, {1-[2-(4-chlorophenoxy)ethyl]piperidin-4-yl}(4-chlorophenyl)methanone, (4-chlorophenyl)(1-{2-[(naphthalen-2-yl)oxy]ethyl}piperidin-4-yl)methanone, (4-chlorophenyl){1-[2-(4-methoxyphenoxy)ethyl]piperidin-4-yl}methanone and {1-[2-(4-bromophenoxy)ethyl]piperidin-4-yl}(4-chlorophenyl)methanone, which exhibited potent protection of PC12 cells at three doses (0.1, 1.0, 10 μM). Compounds (4-fluorophenyl){1-[2-(4-methoxyphenoxy)ethyl]piperidin-4-yl}methanone, (4-fluorophenyl){1-[2-(naphthalen-2-yloxy)ethyl]piperidin-4-yl}methanone, {1-[2-(4-methoxyphenoxy)ethyl]piperidin-4-yl}(4-methoxyphenyl)methanone and {1-[2-(4-chlorophenoxy)ethyl]piperidin-4-yl}(4-chlorophenyl)methanone possessed the significant prolongation of the survival time of mice subjected to acute cerebral ischemia and decreased the mortality rate at all five doses tested (200, 100, 50, 25, 12.5 mg/kg) and had significant neuroprotective activity. In addition, (4-fluorophenyl){1-[2-(4-methoxyphenoxy)ethyl]piperidin-4-yl}methanone, {1-[2-(4-methoxyphenoxy)ethyl]piperidin-4-yl}(4-methoxyphenyl)methanone and {1-[2-(4-chlorophenoxy)ethyl]piperidin-4-yl}(4-chlorophenyl)methanone possessed outstanding neuroprotection in vitro and in vivo. These compounds can be used as a promising neuroprotective agents for future development of new anti-ischemic stroke agents. Basic structure–activity relationships are also presented.
- Gao, Yarong,Qi, Changyong,Wu, Bin,Xu, Yi,Zhong, Yan
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- Structural and Functional Study of the Klebsiella pneumoniae VapBC Toxin-Antitoxin System, including the Development of an Inhibitor That Activates VapC
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Klebsiella pneumoniae is one of the most critical opportunistic pathogens. TA systems are promising drug targets because they are related to the survival of bacterial pathogens. However, structural information on TA systems in K. pneumoniae remains lacking; therefore, it is necessary to explore this information for the development of antibacterial agents. Here, we present the first crystal structure of the VapBC complex from K. pneumoniae at a resolution of 2.00 ?. We determined the toxin inhibitory mechanism of the VapB antitoxin through an Mg2+ switch, in which Mg2+ is displaced by R79 of VapB. This inhibitory mechanism of the active site is a novel finding and the first to be identified in a bacterial TA system. Furthermore, inhibitors, including peptides and small molecules, that activate the VapC toxin were discovered and investigated. These inhibitors can act as antimicrobial agents by disrupting the VapBC complex and activating VapC. Our comprehensive investigation of the K. pneumoniae VapBC system will help elucidate an unsolved conundrum in VapBC systems and develop potential antimicrobial agents.
- Kang, Sung-Min,Jin, Chenglong,Kim, Do-Hee,Lee, Yuno,Lee, Bong-Jin
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p. 13669 - 13679
(2020/12/02)
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- Organic electroluminescent compound and applications thereof
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The invention provides an organic electroluminescent compound and applications thereof, wherein the organic electroluminescent compound has a structure represented by a formula I, and is a novel smallmolecular compound containing a benzimidazole group and a heterocycloalkyl group. According to the invention, the service life LT95 of the OLED device containing the organic electroluminescent compound at 90 DEG C is remarkably prolonged, the application requirement of the OLED device at a high temperature can be fully met, and the organic electroluminescent compound has wide application prospect.
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Paragraph 0077; 0094-0095
(2020/04/22)
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- Optimization of a Benzoylpiperidine Class Identifies a Highly Potent and Selective Reversible Monoacylglycerol Lipase (MAGL) Inhibitor
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Monoacylglycerol lipase (MAGL) is the enzyme degrading the endocannabinoid 2-arachidonoylglycerol, and it is involved in several physiological and pathological processes. The therapeutic potential of MAGL is linked to several diseases, including cancer. The development of MAGL inhibitors has been greatly limited by the side effects associated with the prolonged MAGL inactivation. Importantly, it could be preferable to use reversible MAGL inhibitors in vivo, but nowadays only few reversible compounds have been developed. In the present study, structural optimization of a previously developed class of MAGL inhibitors led to the identification of compound 23, which proved to be a very potent reversible MAGL inhibitor (IC50 = 80 nM), selective for MAGL over the other main components of the endocannabinoid system, endowed of a promising antiproliferative activity in a series of cancer cell lines and able to block MAGL both in cell-based as well as in vivo assays.
- Granchi, Carlotta,Lapillo, Margherita,Glasmacher, Sandra,Bononi, Giulia,Licari, Cristina,Poli, Giulio,El Boustani, Maguie,Caligiuri, Isabella,Rizzolio, Flavio,Gertsch, Jürg,Macchia, Marco,Minutolo, Filippo,Tuccinardi, Tiziano,Chicca, Andrea
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p. 1932 - 1958
(2019/02/26)
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- 1-aryloxy ethyl piperidine-4-yl benzophenone derivative as well as preparation method and application thereof
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The invention discloses a 1-aryloxy ethyl piperidine-4-yl benzophenone derivative as well as a preparation method and application thereof. The compound is a free alkali or salt with a compound of a formula (I) shown in the specification; the salt is one of hydrochloride, hydrobromide, sulfate, trifluoroacetate, tartrate, lactate or mesylate; in the formula, R1 independently represents H, halogen,alkyl, halogen-substituted alkyl, nitryl, amino, nitrile, hydroxyl, alkoxy, aryl alkoxy, heterocyclic alkoxy, aryl, substituted heterocyclic ring or substituted aryl; and R2 is independently selectedfrom H, halogen, alkyl, halogen substituted alkyl, nitryl, amino, nitrile, hydroxyl, alkoxy, aryl alkoxy, heterocyclic alkoxy, aryl, substituted heterocyclic ring or substituted aryl. The 1-aryloxy ethyl piperidine-4-yl benzophenone derivative is applied to preparation of medicines for treating cerebral arterial thrombosis.
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- Design and Synthesis of Natural Product Inspired Libraries Based on the Three-Dimensional (3D) Cedrane Scaffold: Toward the Exploration of 3D Biological Space
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A chemoinformatic method was developed to extract nonflat scaffolds embedded in natural products within the Dictionary of Natural Products (DNP). The cedrane scaffold was then chosen as an example of a nonflat scaffold that directs substituents in three-dimensional (3D) space. A cedrane scaffold that has three orthogonal handles to allow generation of 1D, 2D, and 3D libraries was synthesized on a large scale. These libraries would cover more than 50% of the natural diversity of natural products with an embedded cedrane scaffold. Synthesis of three focused natural product-like libraries based on the 3D cedrane scaffold was achieved. A phenotypic assay was used to test the biological profile of synthesized compounds against normal and Parkinson's patient-derived cells. The cytological profiles of the synthesized analogues based on the cedrane scaffold revealed that this 3D scaffold, prevalidated by nature, can interact with biological systems as it displayed various effects against normal and Parkinson's patient-derived cell lines.
- Tajabadi, Fatemeh Mazraati,Pouwer, Rebecca H.,Liu, Miaomiao,Dashti, Yousef,Campitelli, Marc R.,Murtaza, Mariyam,Mellick, George D.,Wood, Stephen A.,Jenkins, Ian D.,Quinn, Ronald J.
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p. 6609 - 6628
(2018/07/25)
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- Substituted N - ((1 °, 3° - [...] - 4° - yl) - methyl) - 4 - benzoyl piperidine compound and use thereof
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The invention discloses a substituted N-((1', 3'-azole-4'-yl)-methyl)-4-benzoyl-hexahydropyridine compound represented by formula I, a preparation method thereof, and applications of the substituted N-((1', 3'-oxazole-4'-yl)-methyl)-4-benzoyl-hexahydropyridine compound in preparation of antituberculous drugs. The substituted N-((1', 3'-azole-4'-yl)-methyl)-4-benzoyl-hexahydropyridine compound possesses activity on mycobacterium tuberculosis-susceptible strains, and also possesses activity on strains with tolerance on traditional first-line antituberculous drugs such as isoniazide and rifampicin, and is a novel mycobacterium tuberculosis resistant compound with a promising application prospect.
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- Derisking the Cu-Mediated 18F-Fluorination of Heterocyclic Positron Emission Tomography Radioligands
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Molecules labeled with fluorine-18 (18F) are used in positron emission tomography to visualize, characterize and measure biological processes in the body. Despite recent advances in the incorporation of 18F onto arenes, the development of general and efficient approaches to label radioligands necessary for drug discovery programs remains a significant task. This full account describes a derisking approach toward the radiosynthesis of heterocyclic positron emission tomography (PET) radioligands using the copper-mediated 18F-fluorination of aryl boron reagents with 18F-fluoride as a model reaction. This approach is based on a study examining how the presence of heterocycles commonly used in drug development affects the efficiency of 18F-fluorination for a representative aryl boron reagent, and on the labeling of more than 50 (hetero)aryl boronic esters. This set of data allows for the application of this derisking strategy to the successful radiosynthesis of seven structurally complex pharmaceutically relevant heterocycle-containing molecules.
- Taylor, Nicholas J.,Emer, Enrico,Preshlock, Sean,Schedler, Michael,Tredwell, Matthew,Verhoog, Stefan,Mercier, Joel,Genicot, Christophe,Gouverneur, Véronique
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supporting information
p. 8267 - 8276
(2017/06/27)
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- A α, α-diphenyl-4-piperidine methanol synthesis method
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The invention discloses a method for synthesis of alpha,alpha-diphenyl-4-piperidine methanol. The method comprises the steps: taking 4-piperidine formic acid as a raw material, carrying out a reaction with an acetylation reagent to obtain N-acetyl piperidine formic acid; firstly generating N-acetyl piperidine formyl chloride from the obtained N-acetyl piperidine formic acid, and then carrying out a Friedel-Crafts acylation reaction with benzene to generate N-acetyl-4-benzoyl piperidine; carrying out a Grignard reaction of the obtained N-acetyl-4-benzoyl piperidine with phenyl magnesium halide to obtain N-acetyl-alpha,alpha-diphenyl-4-piperidine methanol; and deacetylating the N-acetyl-alpha,alpha-diphenyl-4-piperidine methanol to obtain the alpha,alpha-diphenyl-4-piperidine methanol. The synthesis method has the characteristics of cheap and easily obtained raw materials, simple process steps, high reaction yield and low costs of raw materials, and is suitable for industrialized production.
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- Discovery of the disubstituted oxazole analogues as a novel class anti-tuberculotic agents against MDR- and XDR-MTB
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A high-throughput screening effort on 45,000 compounds resulted in the discovery of a disubstituted oxazole as a new structural class inhibitor of Mycobacterium tuberculosis (Mtb). In order to improve the activity and investigate the SAR of this scaffold, a series of disubstituted azole analogues have been designed and synthesized. The newly synthesized compounds 1a-y were evaluated for their in vitro anti-TB activity versus replicating, multi- and extensive drug resistant Mtb strains. All the compounds, except 1o, 1p and 1q, showed potent anti-TB activity with MIC of 1-64 mg/L. The test of broad spectrum panel revealed that this series are specific to Mtb. The cytotoxicity assessment indicated that the compounds were not cytotoxic against HEK 293 cells. The compounds could have a novel mechanism to anti-Mtb as they can inhibit drug sensitive and drug resistant Mtb.
- Li, Dongsheng,Gao, Nana,Zhu, Ningyu,Lin, Yuan,Li, Yan,Chen, Minghua,You, Xuefu,Lu, Yu,Wan, Kanglin,Jiang, Jian-Dong,Jiang, Wei,Si, Shuyi
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p. 5178 - 5181
(2015/11/09)
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- OXOQUINAZOLINYL-BUTANAMIDE DERIVATIVES
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Compounds of the formula I in which R1-R3 and Z have the meanings indicated in Claim 1, are inhibitors of Tankyrase, and can be employed, inter alia, for the treatment of diseases such as cancer, cardiovascular diseases, central nervous system injury and different forms of inflammation.
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Page/Page column 50
(2015/02/25)
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- PIPERIDINE UREA DERIVATIVES
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Compounds of the formula I in which R1-R3 have the meanings indicated in Claim 1, are inhibitors of Tankyrase, and can be employed, inter alia, for the treatment of diseases such as cancer, cardiovascular diseases, central nervous system injury and different forms of inflammation.
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Page/Page column 42
(2015/02/25)
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- Design, synthesis, and biological evaluation of novel piperidine-4- carboxamide derivatives as potent CCR5 inhibitors
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Based on a putative 'Y shape' pharmacophore model of CCR5 inhibitors, a series of novel piperidine-4-carboxamide derivatives were designed and synthesized using a group-reverse strategy. Among synthesized target compounds, 16g (IC50 = 25.73 nM) and 16i (IC50 = 25.53 nM) showed equivalent inhibitory activity against CCR5 to that of the positive control maraviroc (IC50 = 25.43 nM) in calcium mobilization assay. Selected compounds were further tested for their antiviral activity in HIV-1 single cycle assay. Two compounds, 16g and 16i, displayed antiviral activity with IC 50 values of 73.01 nM and 94.10 nM, respectively. Additionally, the pharmacokinetic properties and inhibitory potency against hERG of 16g were evaluated, providing a foundation for ongoing optimization.
- Hu, Suwen,Gu, Quan,Wang, Zhilong,Weng, Zhiyong,Cai, Yunrui,Dong, Xiaowu,Hu, Yongzhou,Liu, Tao,Xie, Xin
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p. 259 - 266
(2014/01/06)
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- Synthesis of novel 4(Diarylmethylene)piperidines
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An efficient sequence to the seven novel 4-(diarylmethylene)piperidines starting frotn the commercially available l-acetylpiperidine-4-carboxylic acid,is reported.
- Liu, Zong-Ying,Li, Zhuo-Rong,Jiang, Jian-Dong,Boykin, David W.
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experimental part
p. 401 - 405
(2010/08/22)
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- 5-HTX MODULATORS
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This invention relates to compounds which bind to serotonin receptors inside or outside the central nervous system, in particular compounds which bind to the 5-HT2 or 5-HT7 receptors, their preparation and use, compositions containing them, and methods of treatment using them.
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Page/Page column 17-18
(2008/06/13)
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- Benzofurans as suppressors of neurodegeneration
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A compound of the formula: wherein R1 and R2 each is H or a hydrocarbon group which may be substituted, or R1 and R2 form a 3- to 8-membered carbo or heterocyclic ring which may be substituted; R3 is H, a lower alkyl which may be substituted or an aromatic group which may be substituted; R4 is (1) an aromatic group which may be substituted, (2) an aliphatic hydrocarbon group substituted by an aromatic group which may be substituted, which hydrocarbon group may be further substituted or (3) an acyl; X and Y each is oxygen or sulfur which may be oxidized; and ring A is a benzene ring which may be further substituted, or a salt thereof, is useful for an agent for suppressing neurodegeneration.
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Page/Page column 42-43
(2010/10/20)
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- PROCESS FOR PREPARATION OF BENZYLPIPERIDINE COMPOUNDS
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According to the process as shown in the following scheme having a step for reacting Compound (I) with Compound (II) to produce Compound (III), benzylpiperidine compounds useful as synthesis starting materials of pharmaceutical agents, agricultural chemicals and the like can be produced conveniently by a short step: wherein R1 is a hydrogen atom or an amino-protecting group, R2 is a hydrogen atom, a hydrocarbon group optionally having substituents, an alkoxy group optionally having substituents or a heterocyclic group optionally having substituents, and R3 is a lower alkyl group.
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Page/Page column 34-35
(2010/02/07)
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- Syntheses and Binding Studies of New [(Aryl)(aryloxy)methyl]piperidine Derivatives and Related Compounds as Potential Antidepressant Drugs with High Affinity for Serotonin (5-HT) and Norepinephrine (NE) Transporters
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In a wide search program toward new, efficient, and fast-acting antidepressant drugs, we have prepared series of new compounds having an (aryl)(aryloxy)methyl moiety linked directly or through a methylene chain to different substituted and unsubstituted cycles (isoquinoline, piperazine, piperidine, tetrahydropyran, or cyclopentane). These compounds have been evaluated for their affinities for serotonin (5-HT) transporter (SERT) and 5-HT1A and 5-HT2A receptors. Racemic mixtures of 4-[(aryl)(aryloxy)methyl]piperidine derivatives showed much higher affinity values for SERT than fluoxetine and resulted in lack of affinity for 5-HT 1A and 5-HT2A receptors. Some of these racemic mixtures were resolved to their enantiomers and tested for binding to norepinephrine (NE) transporter (NET), dopamine (DA) transporter (DAT), and α2 receptor. Several of these enantiomers [(-)-15b, (-)-15j, (-)-15t, (+)-15u] displayed a dual binding profile with affinities for SERT and NET with K i i = 1.9 and 13.5 nM, respectively), and further pharmacological characterization is in progress for its evaluation as a antidepressant.
- Orjales, Aurelio,Mosquera, Ramón,Toledo, Antonio,Pumar, M. Carmen,García, Neftalí,Cortizo, Lourdes,Labeaga, Luis,Innerárity, Ana
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p. 5512 - 5532
(2007/10/03)
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- Benzothiazole derivatives with activity as adenosine receptor ligands
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The present invention relates to substituted benzothiazole derivitives and to their pharmaceutically acceptable salts useful for the treatment of diseases related to the adenosine receptor.
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- Subtype-selective NMDA receptor ligands and the use thereof
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The invention relates to subtype-selective NMDA receptor ligands and the use thereof for treating or preventing neuronal loss associated with stroke, ischemia, CNS trauma, hypoglycemia and surgery, as well as treating neuro-degenerative diseases including Alzheimer's disease, amyotrophic lateral sclerosis, Huntington's disease and Down's syndrome, treating or preventing the adverse consequences of the overstimulation of the excitatory amino acids, treating anxiety, psychosis, convulsions, aminoglycoside antibiotics-induced hearing loss, migraine headache, chronic pain, Parkinson's disease, glaucoma, CMV retinitis, urinary incontinence, opioid tolerance or withdrawal, and inducing anesthesia, as well as for enhancing cognition.
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- Dipeptides which promote release of growth hormone
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Compounds of formula (I) are growth hormone releasing peptide mimetics which are useful for the treatment and prevention of osteoporosis. STR1
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- 7-fused 2-(piperazinoalkyl) indole derivatives, intermediates and compositions thereof
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Pharmacologically active compounds having anti-allergic properties corresponding to the formula I STR1 which can be mono- or disubstituted in the phenyl ring and their acid addition salts and/or S-mono- or dioxides of sulfur-containing compounds of the formula I are described, together with processes and intermediates for their preparation.
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- Synthesis and Neuroleptic Activity of 3-(1-Substituted-4-piperidinyl)-1,2-benzisoxazoles
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The synthesis of a series of 3-(1-substituted-4-piperidinyl)-1,2-benzisoxazoles is described.The neuroleptic activity of the series was evaluated by utilizing the climbing mice assay and inhibition of spiroperidol binding.Structure-activity relationships were studied by variation of the substituent on the benzisoxazole ring with concomitant variation of four different 1-piperidinyl substituents.Maximum neuroleptic activity was realized when there was a 6-fluoro substituent on the benzisoxazole ring.The 1-piperidinyl substituent appeared less significant, although in most cases, the (1,3-dihydro-2-oxo-2H-benzimidazol-1-yl)propyl group imparted maximum potency.The most potent compound in both assays was 6-fluoro-3--4-piperidinyl>-1,2-benzisoxazole (11b).
- Strupczewski, Joseph T.,Allen, Richard C.,Gardner, Beth Ann,Schmid, Blaine L.,Stache, Ulrich,et al.
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p. 761 - 769
(2007/10/02)
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- Anti-hypertensive benzodioxan derivatives
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This invention relates to benzodioxanylalkylpiperidines, to processes for producing them and to the pharmaceutical compositions containing such compounds as active ingredient. This invention also relates to a method for treating hypertension in hypertensive mammals.
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- 4-Piperidinobutyrophenones
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4'-Fluoro-4-[4-(α-hydroxy-aralkyl)-piperidino]-butyrophenones, preferably those of the formula STR1 n = 1 to 7; R1, R2 = H, alkyl, alkoxy, halo or CF3 ; the 3,4-dehydro derivatives and salts thereof are neuroleptic agents.
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- 4-Piperidinobutyrophenones as neuroleptics
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4'-Fluoro-4-[4-(α-hydroxy-aralkyl)-piperidino]-butyrophenones, preferably those of the formula SPC1 m = 0 to 2, n = 0 to 7, (m+n) = 1 to 7, X = H or OH, R1, R2 = H, alkyl, alkoxy, halo or CF3, and salts thereof are neuroleptic agents.
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