- Preparation method of medicinal intermediate 2-cyanothiazole
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The invention provides a preparation method of medicinal intermediate 2-cyanothiazole. The preparation method comprises the steps that in a reaction container, N-methylimidazole serves as a reaction solvent, CuI serves as a catalyst, K4[Fe(CN)6] and 2-bro
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Paragraph 0017-0024
(2019/03/08)
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- Synthetic strategy for increasing solubility of potential FLT3 inhibitor thieno[2,3-d]pyrimidine derivatives through structural modifications at the C2and C6positions
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Acute myeloid leukemia (AML) is a clonal disorder of hematopoietic progenitor cell. In AML, a mutation in FLT3 is commonly occurs and is associated with poor prognosis. We have previously reported that thieno[2,3-d]pyrimidine derivative compound 1 exhibited better antiproliferative activity against MV4-11 cells which harbor mutant FLT3 than AC220, which is a well-known FLT3 inhibitor, and has good microsomal stability. However, compound 1 had poor solubility. We then carried out further structural modification at the C2and the C6positions of thieno[2,3-d]pyrimidine scaffold. Compound 13b, which possesses a thiazole moiety at the C2position, exhibited better antiproliferative activity than compound 1 and showed increased solubility and moderate microsomal stability. These results indicate that compound 13b could be a promising potential FLT inhibitor for AML chemotherapy.
- Oh, Changmok,Kim, Hyuntae,Kang, Jong Soon,Yun, Jieun,Sim, Jaejun,Kim, Hwan-Mook,Han, Gyoonhee
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p. 496 - 500
(2017/01/16)
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- Synthesis of nitriles from aldehydes with trimethylphenylammonium tribromide and ammonium acetate
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Various aromatic and heterocyclic aldehydes were easily converted to respective nitriles with the combination of trimethylphenylammonium tribromide and ammonium acetate in good yields at room temperature.
- Sayama, Shinsei
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p. 1796 - 1802
(2016/11/06)
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- COMPOUNDS HAVING AN ETHR INHIBITING ACTIVITY - USE OF SAID COMPOUNDS AS DRUGS - PHARMACEUTICAL COMPOSITION AND PRODUCT CONTAINING SAID COMPOUNDS
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The present invention relates to compounds of Formula (I), wherein R1 is chosen among the following radicals : (II); (III); (IV), (V), (VI) (VII) and n= 1 or 2 and m=1 or 2 with the proviso that m=2 when R1 is (VIII). The present invention also relates to the use thereof as drugs, more particularly in the treatment of mycobacterial infections and more particularly in the treatment of tuberculosis.
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Page/Page column 11
(2013/05/21)
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- Schmidt reaction in ionic liquids: Highly efficient and selective conversion of aromatic and heteroaromatic aldehydes to nitriles with [BMIM(SO3H)][OTf] as catalyst and [BMIM][PF6] as solvent
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A mild and selective method is presented for the conversion of aromatic and heteroaromatic aldehydes to nitriles via the Schmidt reaction with TMSN 3 by using [BMIM(SO3H)][OTf] as catalyst and [BMIM][PF6] as solvent. The method offers high yields and simple product isolation, and avoids the use of liquid superacids or corrosive Lewis acids commonly employed for this transformation. It also offers some potential for recycling/reuse of the IL solvent.
- Nandi, Ganesh C.,Laali, Kenneth K.
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p. 2177 - 2179
(2013/04/24)
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- Ethionamide boosters. 2. Combining bioisosteric replacement and structure-based drug design to solve pharmacokinetic issues in a series of potent 1,2,4-oxadiazole EthR inhibitors
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Mycobacterial transcriptional repressor EthR controls the expression of EthA, the bacterial monooxygenase activating ethionamide, and is thus largely responsible for the low sensitivity of the human pathogen Mycobacterium tuberculosis to this antibiotic.
- Flipo, Marion,Desroses, Matthieu,Lecat-Guillet, Nathalie,Villemagne, Baptiste,Blondiaux, Nicolas,Leroux, Florence,Piveteau, Catherine,Mathys, Vanessa,Flament, Marie-Pierre,Siepmann, Juergen,Villeret, Vincent,Wohlk?nig, Alexandre,Wintjens, René,Soror, Sameh H.,Christophe, Thierry,Jeon, Hee Kyoung,Locht, Camille,Brodin, Priscille,Déprez, Benoit,Baulard, Alain R.,Willand, Nicolas
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experimental part
p. 68 - 83
(2012/03/10)
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- PTERIDINONES AS INHIBITORS OF POLO - LIKE KINASE
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The present invention provides compounds having a structure according to Formula (I) or a salt or solvate thereof, wherein ring A, X, R1, R2, R3, R4, R5 and R6, are defined herein. The invention further provides pharmaceutical compositions including the compounds of the invention and methods of making and using the compounds and compositions of the invention, e.g., in the treatment and prevention of various disorders, such as Parkinson's disease.
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Page/Page column 105; 106
(2011/07/09)
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- METHYLENE AMINES OF THIENO [2,3-D] PYRIMIDINE AND THEIR USE AS ADENOSINE A2A RECEPTOR ANTAGONISTS
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This invention relates to a novel thieno[2,3-d]pyrimidine, A, and its therapeutic and prophylactic uses, wherein R1 and R2 are definedin the specification. Disorders treated and/or prevented include Parkinson's Disease.
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Page/Page column 57
(2010/04/30)
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- Process for catalytically preparing aromatic or heteroaromatic nitriles
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The present invention relates to a process for preparing optionally substituted aromatic or heteroaromatic nitriles starting from haloaromatics. These are reacted in a copper-catalysed reaction with potassium hexacyanoferrate(II) or potassium hexacyanoferrate(III) in the presence of heteroaromatic amines.
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Page/Page column 4
(2009/04/24)
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- A bio-inspired copper catalyst system for practical catalytic cyanation of aryl bromides
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A general and environmentally improved protocol for the cyanation of aryl halides with the nontoxic cyanide source potassium hexacyanoferrate(II) {K 4[Fe(CN)6]} using copper catalysis and a ligand system based on 1-alkyl-1H-imidazoles is presented. The advantages of this system are a wide substrate range, high selectivity, easy handling, and inexpensive reagents.
- Schareina, Thomas,Zapf, Alexander,Cotte, Alain,Mueller, Nikolaus,Beller, Matthias
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experimental part
p. 3351 - 3355
(2009/06/06)
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- A state-of-the-art cyanation of aryl bromides: A novel and versatile copper catalyst system inspired by nature
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A general protocol for the cyanation of aryl halides with the nontoxic cyanide source K4[Fe(CN)6] using copper catalysis and a ligand system based on 1-alkylimidazoles is presented. The advantages of this system are the high selectivity, a unique substrate range, easy handling, and inexpensive reagents.
- Schareina, Thomas,Zapf, Alexander,Maegerlein, Wolfgang,Mueller, Nikolaus,Beller, Matthias
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p. 6249 - 6254
(2008/02/13)
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- Copper-catalyzed cyanation of heteroaryl bromides: A novel and versatile catalyst system inspired by nature
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An improved copper catalyst system for the cyanation of heteroaryl halides leading to substituted heteroaryl nitriles is described. The catalyst system consists of simple CuI and N-alkylimidazoles, and mimics known Cu-containing metalloproteins. It is stable, commercially available, cheap and easily tunable. By using inexpensive and non-toxic K4[Fe(CN)6] and the novel Cu catalysts we were able to cyanate both activated and non-activated heteroarenes with high yield and selectivity. The generality of the procedure is demonstrated by a variety of different examples, some of which did not react under other known methods. Georg Thieme Verlag Stuttgart.
- Schareina, Thomas,Zapf, Alexander,M?gerlein, Wolfgang,Müller, Nikolaus,Beller, Matthias
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p. 555 - 558
(2007/10/03)
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- PROCESS FOR PRODUCING AROMATIC NITRILE COMPOUND
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A novel process for industrially producing an aromatic nitrile compound represented by the following general formula (3):characterized in that one of an aromatic hydroxymethyl compound, an aromatic alkoxymethyl compound and an aromatic aldehyde compound, all represented by the following general formula (1): or a mixture thereof is reacted with an oxidized bromine compound represented by the general formula (2)MBrOm in the presence of an acid catalyst and either ammonia or an ammonium sat.
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Page/Page column 25
(2008/06/13)
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- Synthesis of heteroarenecarbonitriles by electrophilic cyanation; Reaction of metalated heteroarenes with p-toluenesulfonyl cyanide
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Several heteroarenecarbonitriles (5) were synthesized in moderate yields from heteroarenes (3) through metalation, followed by electrophilic cyanation using p-toluenesulfonyl cyanide. Similarly, trimethylsilylheteroarenes (8) were converted to heteroarenecarbonitriles (5) in good yields by treatment with p-toluenesulfonyl cyanide.
- Nagasaki, Izuru,Suzuki, Yumiko,Iwamoto, Ken-Ichi,Higashino, Takeo,Miyashita, Akira
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p. 443 - 450
(2007/10/03)
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