- REACTION BETWEEN N-ACYL-2,3-DIHYDROBENZO-1,4-THIAZINE AND N-ACYLPHENOTIAZINE WITH ORGANOMETALLIC REAGENTS
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The title N-acyl-derivatives react with n-BuLi and Grignard reagents leading to products, which, formally, can be considered as derived from a Claisen-type condensation reaction.
- Ciminale, Francesco,Dunno, Leonardo Di,Florio, Saverio
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Read Online
- Influenza virus replication inhibitors and uses thereof
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The invention belongs to the field of medicines, and particularly relates to novel compounds serving as an influenza virus replication inhibitor, a preparation method thereof, a pharmaceutical composition containing the compounds and application of the compounds and the pharmaceutical composition in treatment of influenza. The compounds are compounds as shown in a formula (I) or a stereoisomer, a tautomer, a nitrogen oxide, a solvate, a metabolite, a pharmaceutically acceptable salt or prodrugs of the stereoisomer, the tautomer, the nitrogen oxide, the solvate, the metabolite and the pharmaceutically acceptable salt of the compound as shown in the formula (I). The compounds not only can well inhibit influenza viruses, but also have lower cytotoxicity, excellent in-vivo pharmacokinetic property and the in-vivo pharmacodynamic property and good liver microsome stability.
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Paragraph 0269-0273
(2021/07/01)
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- Design, Synthesis, Safener Activity, and Molecular Docking of Novel N-Substituted Thiazide/Thiazole Derivatives
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A series of novel substituted thiazide/thiazole compounds were designed by splicing active groups and bioisosterism. The title compounds were synthesized via the cyclization, acylation, and carbamylation. All the compounds were characterized by IR, 1H-NMR, 13C-NMR, and HRMS. The single crystal of compound 3f was determined by X-ray crystallography. The biological activity tests indicated that all the compounds showed potential safener activity to the herbicide chlorsulfuron, in which compound 3e showed almost the same level as the commercialized safener AD-67. The molecular docking results were in good agreement with the bioassay results, which demonstrated that compound 3e might compete with chlorsulfuron in the acetolactate synthase active site, causing the herbicide ineffective in maize.
- Fu, Ying,Yi, Ke-Han,Li, Ming-Qiang,Wang, Jing-Yi,Chen, Yu-Feng,Ye, Fei
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p. 180 - 187
(2018/11/25)
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- Sodium Triethylborohydride-Catalyzed Controlled Reduction of Unactivated Amides to Secondary or Tertiary Amines
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The first transition-metal-free catalytic protocol for controlled reduction of amide functions using cheap and bench-stable hydrosilanes as reducing agents has been established. By altering the hydrosilane and solvent, the new method enables the selective cleavage of unactivated C-O bonds in amides and allows the C-N bonds to selectively break via the deacylated cleavage. Overall, this novel process may offer a versatile alternative to current methodologies employing stoichiometric metal systems for the controlled reduction of carboxamides.
- Yao, Wubing,He, Lili,Han, Deman,Zhong, Aiguo
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- Sodium Triethylborohydride-Catalyzed Controlled Reduction of Unactivated Amides to Secondary or Tertiary Amines
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The first transition-metal-free catalytic protocol for controlled reduction of amide functions using cheap and bench-stable hydrosilanes as reducing agents has been established. By altering the hydrosilane and solvent, the new method enables the selective cleavage of unactivated C-O bonds in amides and allows the C-N bonds to selectively break via the deacylated cleavage. Overall, this novel process may offer a versatile alternative to current methodologies employing stoichiometric metal systems for the controlled reduction of carboxamides.
- Yao, Wubing,He, Lili,Han, Deman,Zhong, Aiguo
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p. 14627 - 14635
(2019/12/02)
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- TETRAHYDROQUINOLINE SUBSTITUTED HYDROXAMIC ACIDS AS SELECTIVE HISTONE DEACETYLASE 6 INHIBITORS
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Histone deacetylases inhibitors (HDACIs) and compositions containing the same are disclosed. Methods of treating diseases and conditions wherein inhibition of HDAC provides a benefit, like a cancer, a neurodegenerative disorder, a neurological disease, tr
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Paragraph 0231-0232
(2017/09/08)
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- Novel nonmetal catalytic bidirectional selective reduction method of tertiary aromatic amide
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The invention relates to a novel effective bidirectional selective environment-friendly method for hydrosilation reduction of tertiary aromatic amide and an organic silicon reagent. The method comprises the following steps: selecting a nonmetal catalytic system, and selectively preparing a secondary or tertiary organic amine compound by successively catalyzing tertiary aromatic amide and cheap PHMS or triethoxysilane under a mild condition. By adopting the method, the bidirectional selective reduction of the tertiary aromatic amide is realized by innovatively utilizing an electronic effect and steric hindrance difference of an organic silicon reagent at first time, so that a brand new strategy is provided for the reduction of amide and derivative of the amide, the defects of the traditional method that the substrate functional group is poor in compatibility, the production cost is high and the like can be overcome, and the application prospect of the amine compound prepared in industrial production or laboratory is promising.
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Paragraph 0106; 0107; 0108; 0109
(2017/10/22)
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- Chemoselective Deprotection of Sulfonamides under Acidic Conditions: Scope, Sulfonyl Group Migration, and Synthetic Applications
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Chemoselective acidic hydrolysis of sulfonamides with trifluoromethanesulfonic acid has been evaluated as a deprotection method and further extended to more complex synthetic applications. In contrast to conventional troublesome sulfonamide hydrolysis, a near-stoichiometric amount of acid was found to be sufficient to bring about efficient deprotection of various neutral or electron-deficient N-arylsulfonamides, whereas electron-rich substrates provided sulfonyl group migration products. The deprotection method developed is fully selective for N-arylsulfonamides, and the possibility to discriminate among various different sulfonamides is demonstrated.
- Javorskis, Tomas,Orentas, Edvinas
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p. 13423 - 13439
(2017/12/26)
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- TRICYCLIC INDOLE MCL-1 INHIBITORS AND USES THEREOF
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The present invention provides for compounds that inhibit the activity of an anti-apoptotic Bcl-2 family member Myeloid cell leukemia-1 (Mcl-1) protein. The present invention also provides for pharmaceutical compositions as well as methods for using compounds for treatment of diseases and conditions (e.g., cancer) characterized by the over-expression or dysregulation of Mcl-1 protein.
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Paragraph 0427
(2016/05/19)
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- An odorless, one-pot synthesis of nitroaryl thioethers via SNAr reactions through the in situ generation of S-alkylisothiouronium salts
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A newly developed C-S bond formation nucleophilic aromatic substitution (SNAr) reaction in aqueous Triton X-100 (TX100) micelles has been disclosed. This chemistry, in which odorless, cheap and stable thiourea in place of thiols is used as the sulfur reagent, provides an efficient approach for the generation of nitroaryl thioethers, which are useful structural units of many bioactive molecules, rendering this methodology attractive to both synthetic and medicinal chemistry.
- Lu, Guo-Ping,Cai, Chun
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p. 59990 - 59996
(2015/02/19)
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- Efficient access to 1,4-benzothiazine: Palladium-catalyzed double C-S bond formation using Na2S2O3 as sulfurating reagent
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A novel Pd-catalyzed double C-S bond formation coupling reaction has been developed. This protocol, in which Na2S2O3 was used as sulfurating reagent in metal-catalyzed reactions, provides an efficient method for the synthe
- Qiao, Zongjun,Liu, Hui,Xiao, Xiao,Fu, Yana,Wei, Jianpeng,Li, Yuxue,Jiang, Xuefeng
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p. 2594 - 2597
(2013/07/19)
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- Selective N-alkylation of arylamines with alkyl chloride in ionic liquids: Scope and applications
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An efficient N-selective alkylation of primary aromatic amines in molten quaternary ammonium salts, as the solvent, under relatively mild and base-free conditions is presented. On the basis of the Kamlet-Taft parameters and the nucleophilicity of the IL (ionic liquid) anions, the influence of the ionic liquid was evaluated. This protocol was validated on a larger multigram scale and with the syntheses of bioactive heterocycles (e.g., 1,4-benzothiazine and quinoxalines) and new efficient MALDI matrixes. Copyright
- Monopoli, Antonio,Cotugno, Pietro,Cortese, Marina,Calvano, Cosima Damiana,Ciminale, Francesco,Nacci, Angelo
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supporting information; experimental part
p. 3105 - 3111
(2012/06/30)
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- FUSED TETRACYCLIC PYRIDO[4,3-B]INDOLE AND PYRIDO[3,4-B]ONDOLE DERIVATIVES AND METHODS OF USE
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This disclosure is directed to fused tetracyclic pyrido[4,3-b]indoles and pyrido[3,4- b]indoles. Pharmaceutical compositions comprising the compounds are also provided, as are methods of using the compounds in a variety of therapeutic applications, including the treatment of a cognitive disorder, psychotic disorder, neurotransmitter-mediated disorder and/or a neuronal disorder.
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Page/Page column 243
(2011/09/19)
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- Regioselective synthesis of heterocycles containing nitrogen neighboring an aromatic ring by reductive ring expansion using diisobutylaluminum hydride and studies on the reaction mechanism
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(Chemical Equation Presented) A systematic investigation of the reductive ring-expansion reaction of cyclic ketoximes fused to aromatic ringswith diisobutylaluminum hydride (DIBALH) is described. This reaction regioselectively afforded a variety of five- to eight-membered bicyclic heterocycles or tricyclic heterocycles containing nitrogen neighboring an aromatic ring, including indoline, 1,2,3,4,5,6-hexahydrobenz[b]azocine, 3,4-dihydro-2H-benzo[b] [1,4]oxazine, 2,3,4,5-tetrahydrobenzo[b][1,4]thiazepine, 1,2,3,4,5,6- hexahydroazepino[3,2-b]-indole, 2,3,4,5-tetrahydro-1H-benzothieno[2,3-b]azepine, 2,3,4,5-tetrahydro-1H-benzothieno[3,2-b]-azepine, 5,6-dihydrophenanthridine, and 5,6,11,12-tetrahydrodibenz[b, f]azocine. The reaction mechanism leading to the rearrangement was investigated on the basis of the restricted Becke three-parameter plus Lee-Yang-Parr (B3LYP) density functional theory (DFT) with the 6-31G (d) basis set. It was found that the reaction proceeds through a three-centered transition state via a stepwise mechanism because the potential energy curve along the intrinsic reaction coordinate (IRC) had twomaxima (saddle points; TS1 and TS2) and the partial phenonium cation intermediate C. In addition to cyclic ketoximes fused to aromatic rings, the reactions of various cyclic and acyclic ketoximeswere examined to investigate preference of migrating group. It was found that themore electron-rich group migrated preferentially to give the corresponding secondary amines.
- Cho, Hidetsura,Iwama, Yusuke,Sugimoto, Kenji,Mori, Seiji,Tokuyama, Hidetoshi
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experimental part
p. 627 - 636
(2010/04/29)
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- COMPOUND HAVING 11 ?-HSD1 INHIBITORY ACTIVITY
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The present invention provides compounds having excellent 11β-HSD1 inhibitory activity. A compound represented by the following formula (I): [wherein X1 represents an oxygen atom, or the formula -(CR11R12)p-, etc., Y1 represents a hydrogen atom, a hydroxyl group, etc., Z1 represents an oxygen atom or the formula -(NR14)-, R1 represents a hydrogen atom, a halogen atom, a cyano group, a C1-4 alkyl group, a C1-4 alkyl group substituted with 1 to 3 halogen atoms, a C1-4 alkoxy group, a C1-4 alkoxycarbonyl group, a carboxyl group, a carbamoyl group, or an amino group, and m represents an integer of 1 or 2, and R2 represents a hydrogen atom or a C1-4 alkyl group, and n represents an integer of 1 or 2].
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Page/Page column 17
(2010/04/25)
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- BENZOXAZINES, BENZOTHIAZINES, AND RELATED COMPOUNDS HAVING NOS INHIBITORY ACTIVITY
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The present invention features benzoxazines, benzothiazines, and related compounds that inhibit nitric oxide synthase (NOS), particularly those that selectively inhibit neuronal nitric oxide synthase (nNOS) in preference to other NOS isoforms. The NOS inh
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Page/Page column 69
(2010/02/17)
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- Regiospecific synthesis of unsubstituted basic skeletons of heterocycles containing nitrogen neighboring an aromatic ring by the reductive ring expansion reaction using diisobutylaluminum hydride
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A systematic investigation of reductive ring expansion reaction of oximes with diisobutylaluminum hydride (DIBAH) was performed. The reaction regiospecifically provided a variety of unsubstituted bicyclic heterocycles 3a-3g or tricyclic heterocycles 3h, 3j-3l that contained nitrogen attached to an aromatic ring.
- Cho, Hidetsura,Iwama, Yusuke,Sugimoto, Kenji,Kwon, Eunsang,Tokuyama, Hidetoshi
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experimental part
p. 1183 - 1190
(2009/11/30)
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- Pharmaceutical Compositions Comprising Nitrogen-Containing Fused Ring Coumpounds
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[Problems] The present invention provides pharmaceutical composition which is effective for the prophylaxis or treatment of pathology showing involvement of uric acid (hyperuricemia, gouty tophus, acute gout arthritis, chronic gout arthritis, gouty kidney, urolithiasis, renal function disorder, coronary arterial disease, ischemic heart disease and the like) and the like, and is superior in the time-course stability and dissolution property (disintegration property). [Solving Means] The pharmaceutical composition of the present invention is a pharmaceutical composition comprising a nitrogen-containing fused ring compound represented by the following formula [1] or a pharmaceutically acceptable salt thereof, and one or more pharmaceutically acceptable additives, wherein the nitrogen-containing fused ring compound or a pharmaceutically acceptable salt thereof is not in contact with a basic additive: wherein each symbol is as described in the specification.
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- Production Method of Nitrogen-Containing Fused Ring Compounds
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[Problems] The present invention provides a superior production method and a superior purification method of compounds effective for the treatment or prophylaxis of pathology showing involvement of uric acid, such as hyperuricemia, gouty tophus, acute gouty arthritis, chronic gouty arthritis, gouty kidney, urolithiasis, renal function disorder, coronary artery disease, ischemic heart disease and the like. [Means] A compound represented by the following formula [2] or a pharmaceutically acceptable salt thereof can be produced by reacting a compound represented by the following formula [3] or a salt thereof with a compound represented by the following formula [4], a salt thereof or a reactive derivative thereof. Moreover, crystallization of a compound represented by the formula [2] can be performed with industrially superior workability, and high quality crystals of a compound represented by the formula [2] can be obtained. wherein each symbol is as defined in the description.
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Page/Page column 45
(2010/11/30)
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- Nitrogen-containing fused ring compounds and use thereof
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A URAT1 activity inhibitor containing a nitrogen-containing fused ring compound represented by the following formula [1]: wherein each symbol is as defined in the description. The present invention is useful for the prophylaxis or treatment of pathology showing involvement of uric acid, such as hyperuricemia, gouty tophus, acute gouty arthritis, chronic gouty arthritis, gouty kidney, urolithiasis, renal function disorder, coronary artery disease, ischemic heart disease and the like.
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Page/Page column 82
(2010/11/25)
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- An efficient synthesis of benzene fused six-, seven- and eight-membered rings containing nitrogen and sulfur by benzyne ring closure reaction
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3,4-Dihydro-2-H-benzo[1,4]thiazines (3a-c), 2,3,4,5-tetrahydro[b]-[1,4] thiazapines (3d-f) and 2,3,4,5-tetrahydro-2H-benzo[b][1,4]thiazocines (3g-i) were prepared by the cyclization of the respective 2-bromophenylsulfanyl derivatives of ethylamine (1a-c), propylamine (2d-f) and butylamine (2g-i).
- Mukherjee, Chandrani,Biehl, Ed
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p. 2309 - 2318
(2007/10/03)
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- Spiro-cyclic beta-amino acid derivatives as inhibitors of matrix metalloproteases and TNF-alpha converting enzyme (TACE)
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The present application describes novel spiro-cyclic β-amino acid derivatives of formula I: or pharmaceutically acceptable salt forms thereof, wherein ring B is a 3-13 membered carbocycle or heterocycle, ring C forms a 3-11 membered spiro-carbocycle or spiro-heterocycleon ring B, and the other variables are defined in the present specification, which are useful as as matrix metalloproteinases (MMP), TNF-α converting enzyme (TACE), and/or aggrecanase inhibitors.
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- Barbituric acid derivatives as inhibitors of TNF-alpha converting enzyme (TACE) and/or matrix metalloproteinases
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The present application describes novel barbituric acid derivatives of formula I: or pharmaceutically acceptable salt or prodrug forms thereof, wherein A, B, L, R1, R2, R3, R4, R5, n, W, U, X, Y, Z, U
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Page/Page column 32; 33
(2008/06/13)
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- Cyclic hydroxamic acids as inhibitors of matrix metalloproteinases and/or TNF-alpha converting enzyme (TACE)
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The present application describes novel cyclic hydroxamic acids of formula I: or pharmaceutically acceptable salt forms thereof, wherein ring B is a 5-7 membered cyclic system containing from 0-2 heteroatoms selected from O, N, NR1, and S(O)p, and 0-1 carbonyl groups and the other variables are defined in the present specification, which are useful as inhibitors of matrix metalloproteinases (MMP), TNF-α converting enzyme (TACE), aggrecanase or a combination thereof, pharmaceutical compositions containing the same, and methods of using the same.
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- Hydantoins and related heterocycles as inhibitors of matrix metalloproteinases and/or TNF-alpha converting enzyme (TACE)
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The present application describes novel hydantoin derivatives of formula (I): or pharmaceutically acceptable salt or prodrug forms thereof, wherein A, B, R1, R2, R3, R4, R5, R6, R7, R11, and n are defined in the present specification, which are useful as inhibitors of matrix metalloproteinases (MMP), TNF-α converting enzyme (TACE), aggrecanase, or a combination thereof.
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- Synthesis and antitumor activity of some new substituted quinolin-4- one and 1,7-naphthyridin-4-one analogs
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The synthesis of some new analogs of quinolin-4-one and 1,7- naphthyridin-4-one is described. The prepared compounds were tested for their in vitro antitumor and cdc2 kinase or cdc25 phosphatase inhibitory activity. Compound ethyl 7-oxo-2,3-dihydro-7H-pyrido [1,2,3-de][2,3- b]pyrido-1,4-thiazine-6-carboxylate (6b) showed antitumor activity against CNS SNB-75, breast T-47D, and lung NCI-H522 cancer cell lines with GI50 values of 8.3, 17.6, and 22.7 μM, respectively. Meanwhile, the compounds ethyl 4-oxo-8-phenylthio-1H,4H-quinoline-3-carboxylate (11a) and 4-oxo-8- phenylthio-1H,4H-1,7-naphthyridine-3-carboxylic acid (12b) have proved to be cdc25 phosphatase inhibitors at IC50 values of 11 and 5 μM, respectively.
- El-Subbagh,Abadi,Al-Khawad,Al-Rashood
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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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- SINTESI ED ATTIVITA ANTIINFIAMMATORIA DI ALCUNI DERIVATI 1,4-BENZOTIAZINICI
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A new series of dihydro-4H-1,4-benzothiazine derivatives was prepared.These compounds were obtained by reductive N-alkylation reaction with sodium borohydride in acetic acid of the corresponding 4H-1,4-benzothiazine.Some of the latter compounds were synthesized by a new synthetic method employing 2-aminobenzenethiol and alkynes as starting material. - Preliminary pharmacological data on the antiinflammatory activity of these compounds by using carrageenin paw edema assay are reported.
- Trapani, G.,Reho, A.,Morlacchi, F.,Latrofa, A.,Marchini, P.,et al.
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p. 369 - 376
(2007/10/02)
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- Eliminative Ring Fission of 4-Acyl-2,3-dihydro-4H-1,4-benzothiazines
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The behavior of 4-acyl-2,3-dihydro-1,4-benzothiazines 1-11 upon treatment with lithium diisopropylamide (LDA) in THF at -78 deg C has been examined.Very marked differences have been observed.Whereas unsubstituted and monosubstituted derivatives (1-4) read
- Babudri, F.,Florio, S.,Indelicati, G.,Trapani, G.
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p. 4082 - 4087
(2007/10/02)
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- ORGANOMETALLIC INDUCED SELF-CONDENSATION OF CARBOXAMIDES
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N,N-Disubstituted carboxamides containing α-hydrogen atoms undergo self-condensation reaction simply on treatment with Grignard reagents or n-BuLi in THF at room temp.The reaction is considerably influenced by steric hindrance at the α-carbon and the condensing agent utilized.A possible Claisen-type mechanism is also reported.
- Babudri, F.,Ciminale, F.,Nunno, L. Di,Florio, S.
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p. 557 - 561
(2007/10/02)
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- Synthesis and Reactivity of 4-Substituted-2,3-dihydrobenzo-1,4-thiazines
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A series of derivatives of 4H-2,3-dihydrobenzo-1,4-thiazine has been prepared. 4-Acetyl-2,3-dihydrobenzo-1,4-thiazine undergoes self-condensation by n-butylmagnesium bromide affording the corresponding 4-acetoacetyl-2,3-dihydrobenzo-1,4-thiazine, which, i
- Florio, Saverio,Leng, John L.,Stirling, Charles J. M.
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p. 237 - 240
(2007/10/02)
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- An Easy and Efficient Synthesis of 4H-Thiazoloquinolin-4-ones and 5H-1,4-thiazinoquinolin-5-ones
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The title heterocycles have been synthesized by a Claisen-type self condensation of acetylbenzothiazolines and acetyldihydrobenzothiazines and subsequent cyclization.
- Babudri, Francesco,Di Nunno, Leonardo,Florio, Saverio
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p. 1273 - 1274
(2007/10/02)
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