- Facile Preparation of N-(sulfonyl)carbamates
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N-(Sulfonyl)carbamates, useful N-nucleophiles in the Mitsunobu reaction, can be prepared readily by reaction of sulfonamides with chloroformates (or dicarbonates) catalyzed by 4-(dimethylamino)pyridine.
- Neustadt, Bernard R.
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Read Online
- Identification of a novel orally bioavailable NLRP3 inflammasome inhibitor
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NLRP3 inflammasome mediated release of interleukin-1β (IL-1β) has been implicated in various diseases, including COVID-19. In this study, rationally designed alkenyl sulfonylurea derivatives were identified as novel, potent and orally bioavailable NLRP3 i
- Agarwal, Sameer,Pethani, Jignesh P.,Shah, Hardik A.,Vyas, Vismit,Sasane, Santosh,Bhavsar, Harsh,Bandyopadhyay, Debdutta,Giri, Poonam,Viswanathan, Kasinath,Jain, Mukul R.,Sharma, Rajiv
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Read Online
- Alkene Syn- And Anti-Oxyamination with Malonoyl Peroxides
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Malonoyl peroxide 6 is an effective reagent for the syn- or anti-oxyamination of alkenes. Reaction of 6 and an alkene in the presence of O-tert-butyl-N-tosylcarbamate (R3 = CO2 tBu) leads to the anti-oxyaminated product in up to 99% yield. Use of O-methyl-N-tosyl carbamate (R3 = CO2Me) as the nitrogen nucleophile followed by treatment of the product with trifluoroacetic acid leads to the syn-oxyaminated product in up to 77% yield. Mechanisms consistent with the observed selectivities are proposed.
- Curle, Jonathan M.,Perieteanu, Marina C.,Humphreys, Philip G.,Kennedy, Alan R.,Tomkinson, Nicholas C. O.
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supporting information
p. 1659 - 1664
(2020/02/13)
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- An unconventional sulfur-to-selenium-to-carbon radical transfer: Chemo-and regioselective cyclization of yne-ynamides
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An uncommon sulfur → selenium → carbon radical transfer process is employed to develop an unprecedented selenyl radical-mediated regioselective cyclization of yne-tethered-ynamides. Density functional theory studies and HRMS experiments are used to establish a reactivity scale between thiyl and selenyl radicals. The unique features of this transformation include, (1) the chemoselective reactivity of RSe over RS, (2) regioselective RSe attack on alkyne over ynamide, (3) 5-exo-dig cyclization of yne-ynamide to unusual 4-selenyl-pyrroles, and (4) the green synthetic method. The reaction of methyldiselenide with yne-ynamides to methylselenopyrroles is also described.
- Dutta, Shubham,Prabagar,Vanjari, Rajeshwer,Gandon, Vincent,Sahoo, Akhila K.
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supporting information
p. 1113 - 1118
(2020/03/11)
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- Acylated sulfonamide adenosines as potent inhibitors of the adenylate-forming enzyme superfamily
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The superfamily of adenylate-forming enzymes all share a common chemistry. They activate a carboxylate group, on a specific substrate, by catalyzing the formation of a high energy mixed phosphoanhydride-linked nucleoside intermediate. Members of this diverse enzymatic family play key roles in a variety of metabolic pathways and therefore many have been regarded as drug targets. A generic approach to inhibit such enzymes is the use of non-hydrolysable sulfur-based bioisosteres of the adenylate intermediate. Here we compare the activity of compounds containing a sulfamoyl and sulfonamide linker respectively. An improved synthetic strategy was developed to generate inhibitors containing the latter that target isoleucyl- (IleRS)and seryl-tRNA synthetase (SerRS), two structurally distinct representatives of Class I and II aminoacyl-tRNA synthetases (aaRSs). These enzymes attach their respective amino acid to its cognate tRNA and are indispensable for protein translation. Evaluation of the ability of the two similar isosteres to inhibit serRS revealed a remarkable difference, with an almost complete loss of activity for seryl-sulfonamide 15 (SerSoHA)compared to its sulfamoyl analogue (SerSA), while inhibition of IleRS was unaffected. To explain these observations, we have determined a 2.1 ? crystal structure of Klebsiella pneumoniae SerRS in complex with SerSA. Using this structure as a template, modelling of 15 in the active site predicts an unfavourable eclipsed conformation. We extended the same modelling strategy to representative members of the whole adenylate-forming enzyme superfamily, and were able to disclose a new classification system for adenylating enzymes, based on their protein fold. The results suggest that, other than for the structural and functional orthologues of the Class II aaRSs, the O to C substitution within the sulfur-sugar link should generally preserve the inhibitory potency.
- De Ruysscher, Dries,Pang, Luping,De Graef, Steff,Nautiyal, Manesh,De Borggraeve, Wim M.,Rozenski, Jef,Strelkov, Sergei V.,Weeks, Stephen D.,Van Aerschot, Arthur
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p. 252 - 264
(2019/05/02)
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- HORMONE RECEPTOR MODULATORS FOR TREATING METABOLIC CONDITIONS AND DISORDERS
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The invention relates to activators of FXR useful in the treatment of autoimmune disorders, liver disease, intestinal disease, kidney disease, cancer, and other diseases in which FXR plays a role, having the Formula (I): (I), wherein L1, A, X1, X2, R1, R2, and R3 are described herein.
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Page/Page column 356; 357
(2018/03/25)
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- Electron-deficient olefin ligands enable generation of quaternary carbons by Ni-catalyzed cross-coupling
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A Ni-catalyzed Negishi cross-coupling with 1,1-disubstituted styrenyl aziridines has been developed. This method delivers valuable β-substituted phenethylamines via a challenging reductive elimination that affords a quaternary carbon. A novel electron-deficient olefin ligand, Fro-DO, proved crucial for achieving high rates and chemoselectivity for C-C bond formation over β-H elimination. This ligand is easy to access, is stable, and presents a modular framework for reaction discovery and optimization. We expect that these attributes, combined with the fact that the ligands impart distinct electronic properties to a metal, will support the invention of new transformations not previously possible using established ligands.
- Huang, Chung-Yang,Doyle, Abigail G.
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supporting information
p. 5638 - 5641
(2015/05/20)
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- CARBONITRILE DERIVATIVES AS SELECTIVE ANDROGEN RECEPTOR MODULATORS
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The present invention relates to a compound of Formula 1, 2 or 3: I II III wherein A is N or -CR0--, where R0 is hydrogen, C1-C6 linear or branched chain alkyl, etc., Z is -CRe --, or, -N--, where Re is hydrogen, C1 -C6 linear or branched chain alkyl, etc.; R1 is hydrogen, C1 -C6 linear or branched chain alkyl, etc.; R2 are independently hydrogen or C1-C6 linear or branched chain alkyl; R3 and R4 are independently hydrogen, C1C6 linear or branched chain alkyl, etc.;. R5 and R6 are independently hydrogen or C1-C6 linear or branched chain alkyl, etc.; R8 is hydrogen, C1 -C6 linear or branched chain alkyl, etc.; R9 and R10 are independently hydrogen or C1- C6 linear or branched chain alkyl, etc.; Q is --CO--, --(CH2)q--, --(CHRs)q--, or -(CRsRt)q- -, where Rs and Rt are independently C1-C6 linear or branched chain alkyl, aryl, alkylaryl, heteroaryl or alkylheteroaryl; where q is 0, 1, 2, or 3; and, where n is 0, 1, 2, 3, 4 or 5; or, a pharmaceutically acceptable salt thereof, for the treatment of certain diseases, particularly those affected or mediated by the androgen receptor; to compbinations comprising such compounds with a second pharmaceutically active ingredient; to compositions containing such combinations; and to such combinations for the treatment of various diseases, particularly, those affected or mediated by the androgen receptor.
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Page/Page column 136-137
(2015/12/17)
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- NOVEL SELECTIVE ANDROGEN RECEPTOR MODULATORS
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The present invention relates to a compound of Formula 1, 2 or 3: wherein A is N or —CR0—, where R0 is hydrogen, C1-C6 linear or branched chain alkyl, etc., Z is —CRe—, or, —N—, where Re is hydrogen, C1-C6 linear or branched chain alkyl,etc.; R1 is hydrogen, C1-C6 linear or branched chain alkyl, etc.; R2 are independently hydrogen or C1-C6 linear or branched chain alkyl; R3 and R4 are independently hydrogen, C1-C6 linear or branched chain alkyl, etc.;. R5 and R6 are independently hydrogen or C1-C6 linear or branched chain alkyl, etc.; R8 is hydrogen, C1-C6 linear or branched chain alkyl, etc.; R9 and R10 are independently hydrogen or C1-C6 linear or branched chain alkyl, etc.; Q is —CO—, —(CH2)q—, —(CHRs)q—, or (CRsRt)q—, where Rs and Rt are independently C1-C6 linear or branched chain alkyl, aryl, alkylaryl, heteroaryl or alkylheteroaryl; where q is 0, 1, 2, or 3; and, where n is 0, 1, 2, 3, 4 or 5; or, a pharmaceutically acceptable salt thereof, to compositions containing such compounds; and to the uses of such compounds in the treatment of various diseases, particularly, those affected or mediated by the androgen receptor.
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(2014/06/23)
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- TRICYCLIC FUSED THIOPHENE DERIVATIVES AS JAK INHIBITORS
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The present invention provides tricyclic fused thiophene derivatives, as well as their compositions and methods of use, that modulate the activity of Janus kinase (JAK) and are useful in the treatment of diseases related to the activity of JAK including, for example, inflammatory disorders, autoimmune disorders, cancer, and other diseases.
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Paragraph 0642; 0643
(2014/05/08)
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- [1,2,4]THIADIAZINE 1,1-DIOXIDE COMPOUNDS FOR LOWERING SERUM URIC ACID
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The present invention describes [1,2,4]thiadiazine 1,1-dioxide compounds and pharmaceutically acceptable salts thereof, which are useful in lowering serum uric acid in a patient in need thereof comprising administering to the patient a therapeutically or
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- BORON-CONTAINING SMALL MOLECULES
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This invention relates to, among other items, 6-substituted benzoxaborole compounds and their use for treating bacterial infections.
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Page/Page column 109
(2012/06/05)
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- [1,2,4]THIADIAZINE 1,1-DIOXIDE COMPOUNDS
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The invention is directed to [1,2,4]thiadiazine 1,1-dioxide compounds and pharmaceutical compositions containing such compounds that are useful in treating infections by hepatitis C virus.
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Page/Page column 44
(2009/12/24)
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- Molecular iodine-catalyzed facile procedure for N-Boc protection of amines
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An efficient and practical protocol for the protection of various structurally and electronically divergent aryl and aliphatic amines using (Boc)2O in the presence of a catalytic amount of molecular iodine (10 mol%) under solvent-free conditions at ambient temperature is presented.
- Varala, Ravi,Nuvula, Sreelatha,Adapa, Srinivas R.
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p. 8283 - 8286
(2007/10/03)
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- Design, synthesis, and biological evaluation of β-ketosulfonamide adenylation inhibitors as potential antitubercular agents
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(Chemical Equation Presented) The antitubercular nucleoside antibiotics 1 and 2 were recently described that inhibit the adenylate-forming enzyme MbtA and disrupt biosynthesis of the virulence-conferring siderophore known as mycobactin in Mycobacterium tu
- Vannada, Jagadeshwar,Bennett, Eric M.,Wilson, Daniel J.,Boshoff, Helena I.,Barry III, Clifton E.,Aldrich, Courtney C.
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p. 4707 - 4710
(2007/10/03)
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- FUSED BENZENE DERIVATIVE AND USE
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The present invention provides a compound represented by the general formula: [wherein Ring A represents an optionally substituted 5- to 8-membered ring, Ring B represents a further optionally substituted 4- to 10-membered ring, Ring C represents a further optionally substituted benzene ring, X1 represents carbon atom, X2 represents a carbon atom, an oxygen atom, etc., W represents a nitrogen atom, etc., Y11 represents a group represented by the formula CR2R3' (wherein R2 represents a hydrogen atom, a cyano group, a nitro group, etc., and R3' represents a hydrogen atom, a cyano group, a nitro group, etc., respectively), Y21 represents a group represented by the formula CR4R5' (wherein R4 represents a hydrogen atom, a cyano group, a nitro group, etc., and R5' represents a hydrogen atom, a cyano group, a nitro group, etc., respectively), etc., and R1 represents an electron-withdrawing group, respectively. The formula represents a single bond or a double bond] or a salt thereof, which is useful as an androgen receptor modulator.
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Page/Page column 44
(2010/02/12)
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- Sulphonamide derivatives
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The present invention relates to the potentiation of glutamate receptor function using certain sulphonamide derivatives. It also relates to novel sulphonamide derivatives, to processes for their preparation and to pharmaceutical compositions containing them.
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(2008/06/13)
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- Alkenyl sulphonamide derivatives
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The present invention provides certain alkenyl sulphonamide derivatives useful for potentiating glutamate receptor function in a mammal and therefore, useful for treating a wide variety of conditions, such as psychiatric and neurological disorders.
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- Sulphonamide derivatives
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Glutamate receptor function in a mammal may be potentiated using an effective amount of a compound of formulaR1—L—NHSO2R2??Iin whichR1 represents an unsubstituted or substituted aromatic or heteroaromatic group;R2 represents (1-6C)alkyl, (3-6C)cycloalkyl, (1-6C)fluoroalkyl, (1-6C)chloroalkyl, (2-6C)alkenyl, (1-4C)alkoxy(1-4C)alkyl, phenyl which is unsubstituted or substituted by halogen, (1-4C)alkyl or (1-4C)alkoxy, or a group, of formula R3R4N in which R3 and R4 each independently represents (1-4C)alkyl or, together with the nitrogen atom to which they are attached form an azetidinyl, pyrrolidinyl, piperidinyl, morpholino, piperazinyl, hexahydroazepinyl or octahydroazocinyl group; andL represents a (2-4C)alkylene chain which is unsubstituted or substituted by one or two substituents selected independently from (1-6C)alkyl, aryl(1-6C)alkyl, (2-6C)alkenyl, aryl(2-6C)alkenyl and aryl, or by two substituents which, together with the carbon atom or carbon atoms to which they are attached form a (3-8C)carbocyclic ring;and pharmaceutically acceptable salts thereof.Also disclosed are compounds of formula I, processes for preparing them and pharmaceutical compositions containing them.
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