60588-81-0Relevant articles and documents
Asymmetric Synthesis of Adjacent Tri- and Tetrasubstituted Carbon Stereocenters: Organocatalytic Aldol Reaction of an Hydantoin Surrogate with Azaarene 2-Carbaldehydes
Izquierdo, June,Demurget, Noémie,Landa, Aitor,Brinck, Tore,Mercero, Jose M.,Dinér, Peter,Oiarbide, Mikel,Palomo, Claudio
supporting information, p. 12431 - 12438 (2019/09/17)
A bifunctional amine/squaramide catalyst promoted direct aldol addition of an hydantoin surrogate to pyridine 2-carbaldehyde N-oxides to afford adducts bearing two vicinal tertiary/quaternary carbons in high diastereo- and enantioselectivity (d.r. up to >20:1; ee up to 98 %) is reported. Acid hydrolysis of adducts followed by reduction of the N-oxide group yields enantiopure carbinol-tethered quaternary hydantoin-azaarene conjugates with densely functionalized skeletons. DFT studies of the potential energy surface (B3LYP/6–31+G(d)+CPCM (dichloromethane)) of the reaction correlate the activity of different catalysts and support an intramolecular hydrogen-bond-assisted activation of the squaramide moiety in the transition state of the catalytic reaction.
HETEROCYCLIC INHIBITORS OF MCT4
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Paragraph 0606, (2018/06/30)
Disclosed herein are compounds and compositions useful in the treatment of MCT4 mediated diseases, such as proliferative and inflammatory diseases, having the structure of Formula I: Methods of inhibition MCT4 activity in a human or animal subject are also provided.
SUBSTITUTED PYRIDIN-2-YLAMINE ANALOGUES
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Page/Page column 50, (2010/02/10)
Substituted pyridin-2-ylamine analogues are provided, of the formula: wherein variables are as described herein. Such compounds are ligands that may be used to modulate specific receptor activity in vivo or in vitro, and are particularly useful in the tre
Pyrazinone thrombin inhibitors
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, (2008/06/13)
Compounds of the invention are useful in inhibiting thrombin and associated thrombotic occlusions having the following structure: or a pharmaceutically acceptable salt thereof, wherein A is
Synthesis, rotamer orientation, and calcium channel modulation activities of alkyl and 2-phenethyl 1,4-dihydro-2,6-dimethyl-3-nitro-4-(3- or 6-substituted-2-pyridyl)-5-pyridinecarboxylates
Iqbal, Nadeem,Akula, Murthy R.,Vo, Dean,Matowe, Wandikayi C.,McEwen, Carol-Anne,Wolowyk, Michael W.,Knaus, Edward E.
, p. 1827 - 1837 (2007/10/03)
A group of racemic alkyl and 2-phenethyl 1,4-dihydro-2,6-dimethyl-3- nitro-4-(3- or 6-substituted-2-pyridyl)-5-pyridinecarboxylates (13a-q) was prepared using a modified Hantzsch reaction that involved the condensation of a 3- or 6-substituted-2-pyridinecarboxaldehyde (7a-j) with an alkyl or 2- phenethyl 3-aminocrotonate (11a-d) and nitroacetone (12). Nuclear Overhauser (NOE) studies indicated there is a significant rotamer fraction in solution where the pyridyl nitrogen is oriented above the 1,4-dihydropyridine ring, irrespective of whether a substituent is located at the 3- or 6-position. A potential H-bonding interaction between the pyridyl nitrogen free electron pair and the suitably positioned 1,4-dihydropyridine NH moiety may stablize this rotamer orientation. In vitro calcium channel antagonist and agonist activities were determined using guinea pig ileum longitudinal smooth muscle (GPILSM) and guinea pig left atrium (GPLA) assays, respectively. Compounds having an i-Pr ester substituent acted as dual cardioselective calcium channel agonists (GPLA)/smooth muscle-selective calcium channel antagonists (GPILSM), except for the C-4 3-nitro-2-pyridyl compound which exhibited an antagonist effect on both GPLA and GPILSM. In contrast, the compounds with a phenethyl ester group, which exhibited antagonist activity (IC50 = 10-5- 10-7 M range) on GPILSM, were devoid of cardiac agonist activity on GPLA. Structure-activity relationships showing the effect of a substituent (Me, CF3, C1, NO2, Ph) at the 3- or 6-position of a C-4 2-pyridyl moiety and a variety of ester substituents (Me, Et, i-Pr, PhCH2CH2-) upon calcium channel modulation are described. Compounds possessing a 3- or 6-substituted- 2-pyridyl moiety, in conjuction with an i-Pr ester substituent, are novel 1,4-dihydropyridine calcium channel modulators that offer a new drug design approach directed to the treatment of congestive heart failure and may also be useful as probes to study the structure-function relationships of calcium channels.
2--1H-thienoimidazoles. A Novel Class of Gastric H+/K+-ATPase Inhibitors
Weidmann, Klaus,Herling, Andreas W.,Lang, Hans-Jochen,Scheunemann, Karl-Heinz,Rippel, Robert,et al.
, p. 438 - 450 (2007/10/02)
2-thienoimidazoles were synthesized and investigated as potential inhibitors of gastric H+/K+-ATPase.The isomers of the two possible thienoimidazole series were found to be potent inhibitors of gastric acid secretion in vitro and in vivo.Structure-activity relationships indicate that especially lipophilic alkoxy, benzyloxy, and phenoxy substituents with additional electron-demanding properties in the 4-position of the pyridine moiety combined with an unsubstituted thienoimidazole lead to highly active compounds with a favorable chemical stability.Various substitution patterns in the thienoimidazole moiety result in lower biological activity.The heptafluorobutyloxy derivative saviprazole (HOE 731, 5d) was selected for further development and is currently undergoing clinical evaluation.Comprehensive pharmacological studies indicate a pharmacodynamic profile different to omeprazole, the first H+/K+-ATPase blocker introduced on the market.
PYRIDYL-ALKYLAMINOETHYLENE COMPOUNDS
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, (2008/06/13)
The compounds are ethylene derivatives which are inhibitors of histamine activity, in particular, inhibitors of H-2 histamine receptors. A compound of this invention is 1-nitro-2-2-((4-methyl-5-imidazolyl) methylthio)ethylamino!-2-2-((3-chloro-2-pyridyl)methylthio) ethylamino!ethylene.
CERTAIN THIAZOLES AND OXAZOLES
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, (2008/06/13)
The compounds are N,N'-substituted thioureas, ureas and guanidines which are H-2 histamine receptor inhibitors. Two compounds of this invention are N,N'-bis 2-((4-methyl-5-imidazolyl)methylthio) ethyl!thiourea and N,N'-bis 2-((4-methyl-5-imidazolyl)methylthio)ethyl!-N"-cyanoguanidine. "
ETHYLENE DERIVATIVES
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, (2008/06/13)
The compounds are ethylene derivatives which are inhibitors of histamine activity, in particular, inhibitors of H-2 histamine receptors. A compound of this invention is 1-nitro-2-methylamino-2-[2-((4-methyl-5-imidazolyl)methylthio)-ethylamino[e thylene.
IMIDAZOLYLMETHYLTHIOETHYL DITHIOCARBAMATE COMPOUNDS
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, (2008/06/13)
The compounds are dithiocarbamates and isothioureas which are histamine H 2-antagonists. Two compounds of the invention are 2-(5-methyl-4-imidazolylmethylthio)ethyl N-methyldithiocarbamate and S-[2-(5-methyl-4-imidazolyl-methylthio)ethyl]-N-cyano-N'-methylisothiourea.