- Synthesis and biological evaluation of phenyl-amino-pyrimidine and indole/oxindole conjugates as potential BCR-ABL inhibitors
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Abstract: Indole/isatin conjugated phenyl-amino-pyrimidine derivatives have been synthesized, characterized and evaluated in vitro for their potential as BCR-ABL inhibitors. Among the series, all derivatives (7a–7o) were found to be more cytotoxic than standard Imatinib against K-562 cell line. Compound 7l was the most active in the series with almost two folds more potency than imitanib (IC50 0.65 μM). In vitro enzymatic studies with recombinant ABL kinase enzyme exhibited promising inhibition in the range of 30–71 μM for most of these novel conjugates. In addition, modelling and other computational studies have been carried out to draw insight into the BCR-ABL protein interactions with the target molecules and drug like properties of the conjugates, respectively. [Figure not available: see fulltext.].
- Rahim, Abdul,Syed, Riyaz,Poornachandra,Malik, M. Shaheer,Reddy, Ch. Venkata Ramana,Alvala, Mallika,Boppana, Kiran,Sridhar,Amanchy, Ramars,Kamal, Ahmed
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- Synthesis, spectroscopic characterization, structural studies, thermal analysis and molecular docking of N-(2-methyl-5-nitrophenyl)-4-(pyridin-2-yl)pyrimidin-2-amine, a precursor for drug design against chronic myeloid leukemia
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The synthesis, crystal structure and spectroscopic and electronic properties of N-(2-methyl-5-nitrophenyl)-4-(pyridin-2-yl)pyrimidin-2-amine (NPPA), C16H13-N5O2, a potential template for drug design against chronic myelogenous leukemia (CML), is reported. The design and construction of the target molecule were carried out starting from the guanidinium nitrate salt (previously synthesized) and the corresponding enaminone. X-ray diffraction analysis and a study of the Hirshfeld surfaces revealed important interactions between the nitro-group O atoms and the H atoms of the pyridine and pyrimidine rings. A crystalline ordering in layers, by the stacking of rings through interactions of the π-π type, was observed and confirmed by a study of the shape-index surfaces and dispersion energy calculations. Quantitative electrostatic potential studies revealed the most positive value of the molecule on regions close to the N-H groups (34.8 kcal mol-1); nevertheless, steric impediments and the planarity of the molecule do not allow the formation of hydrogen bonds from this group. This interaction is however activated when the molecule takes on a new extended conformation in the active pocket of the enzyme kinase (PDB ID 2hyy), interacting with protein residues that are fundamental in the inhibition process of CML. The most negative values of the molecule are seen in regions close to the nitro group (-35.4 and -34.0 kcal mol-1). A molecular docking study revealed an energy affinity of ΔG = -10.3 kcal mol-1for NPPA which, despite not having a more negative value than the control molecule (Imatinib; ΔG = -12.8 kcal mol-1), shows great potential to be used as a template for new drugs against CML.
- Arango-Daravi?a, Kevin,Kennedy, Alan R.,Moreno-Fuquen, Rodolfo
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p. 621 - 632
(2021/10/12)
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- Synthesis method of imatinib and imatinib mesylate
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The invention relates to a synthesis method of imatinib and imatinib mesylate. The method comprises the following steps: condensing 3-acetylpyridine and N,N-dimethylformamide dimethyl acetal which aretaken as initial raw materials to obtain 3-dimethylamino-1-(3-pyridyl)-2-propen-1-one, then reacting with 2-methyl-5-nitrophenylguanidine nitrate to form a pyrimidine ring, performing nitro reductionto obtain N-(5-amino-2-methylphenyl)-4-(3-pyridyl)-2-pyrimidinamine, amidating the N-(5-amino-2-methylphenyl)-4-(3-pyridyl)-2-pyrimidinamine and 4-(chloromethyl)benzoyl chloride, performing affinitysubstitution with 1-methylpiperazine to obtain imatinib, and salifying the imatinib and methanesulfonic acid. The products obtained by the method have the advantages of few impurities, simplicity in post-treatment, high total yield, greenness, environmental protection and safety, and is suitable for a production process for large-scale industrial production of imatinib mesylate.
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Paragraph 0072-0077
(2020/05/02)
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- An optimized approach in the synthesis of imatinib intermediates and analogues
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We revisited the classical synthetic procedure for imatinib synthesis providing an improved and optimized approach in the preparation of a series of new imatinib analogues. The proposed methodology effectively overcomes certain problematic steps, saves time and labor, provides a very high yield and purity and has the potential to be used for the synthesis of many analogues. The formation of the desired guanidine salt 4, one of the key steps to the imatinib synthesis, was proceeded almost quantitatively by the reaction of the hydrochloride of the suitable aniline 3 with excess of molten cyanamide, without any solvent. Pure arylamine intermediates 6a-d were obtained quantitatively in a short reaction time after reduction of the nitro group of the intermediate pyrimidines 5a-d with hydrogen over the Adam's catalyst. In addition, the application of this optimized approach can be extended in the synthesis of nilotinib and its analogues intermediates.
- Kinigopoulou,Filippidou,Gogou,Giannousi,Fouka,Ntemou,Alivertis,Georgis,Brentas,Polychronidou,Voulgari,Theodorou,Skobridis
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p. 61458 - 61467
(2016/07/12)
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- 2,3-dimethyl-6-urea -2H-indazoles and its preparation method and application
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The invention discloses a 2, 3-dimethyl-6-urea-2H-indazole compound shown by the following general formula (I), medicinal salt or a solvent compound thereof, wherein Ar is substituted or unsubstituted phenyl or aromatic matrix. The invention also discloses a preparation method and application of the compound. The compound can regulate signal transduction of tyrosine kinase, inhibit bad cellular proliferation, and particularly has obvious curative effect for tumors.
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Paragraph 0181-0184
(2016/10/09)
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- Imatinib intermediate as a two in one dual channel sensor for the recognition of Cu2+ and I- ions in aqueous media and its practical applications
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An imatinib intermediate, 6-methyl-N-[4-(pyridin-3-yl)pyrimidin-2-yl] benzene-1,3-diaminepyridopyrimidotoluidine (PPT-1), was developed for the colorimetric sensing of Cu2+ ions in aqueous solution. With Cu 2+, the receptor PPT-1 showed a highly selective naked-eye detectable color change from colorless to red over the seventy other tested cations. The colorimetric sensing ability of PPT-1 was successfully utilized in the preparation of test strips and supported silica for the real samples analysis to detect Cu2+ ions from 100% aqueous environment. Moreover, the iodide-sensing ability of receptor PPT-1 was explored among the ten examined anions.
- Patil, Samadhan R.,Nandre, Jitendra P.,Jadhav, Devising,Bothra, Shilpa,Sahoo,Devi, Manisha,Pradeep, Chullikkattil P.,Mahulikar, Pramod P.,Patil, Umesh D.
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supporting information
p. 13299 - 13306
(2014/10/16)
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- Imatinib analogs as potential agents for PET imaging of Bcr-Abl and c-KIT expression at a kinase level
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We synthesized two series of imatinib mesylate (STI-571) analogs to develop a Bcr-Abl and c-KIT receptor-specific labeling agent for positron emission tomography (PET) imaging to measure Bcr-Abl and c-KIT expression levels in a mouse model. The methods of molecular modeling, synthesis of STI-571 and its analogs, in vitro kinase assays, and radiolabeling are described. Molecular modeling revealed that these analogs bind the same Bcr-Abl and c-KIT binding sites as those bound by STI-571. The analogs potently inhibit the tyrosine kinase activity of Bcr-Abl and c-KIT, similarly to STI-571. [ 18F]-labeled STI-571 was prepared with high specific activity (75 GBq/μmol) by nucleophilic displacement and an average radiochemical yield of 12%. [131I]-labeled STI-571 was prepared with high purity (>95%) and an average radiochemical yield of 23%. The uptake rates of [ 18F]-STI-571 in K562 cells expressing Abl and in U87WT cells overexpressing c-KIT were significantly higher than those in the U87 cell and could be inhibited by STI-71 (confirming the specificity of uptake). PET scans of K562 and U87WT tumor-bearing mice with [18F]-STI-571 as a contrast agent showed visible tumor uptake and tumor-to-non-target contrast.
- Peng, Zhenghong,Maxwell, David S.,Sun, Duoli,Bhanu Prasad, Basvoju A.,Pal, Ashutosh,Wang, Shimei,Balatoni, Julius,Ghosh, Pradip,Lim, Seok T.,Volgin, Andrei,Shavrin, Aleksander,Alauddin, Mian M.,Gelovani, Juri G.,Bornmann, William G.
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p. 623 - 632
(2014/01/17)
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- PROCESSES FOR PREPARING IMATINIB AND PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF
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The processes for preparing imatinib and its pharmaceutically acceptable salts, specifically imatinib mesylate, are disclosed.
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Page/Page column 14
(2011/04/25)
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- Formation of pyrimidin-2-ylcyanamide and 2-aminopyrimidine in the reaction of aniline derivatives with cyanamide and dimethylamino-1-pyridyl-2-propenone
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Substituted o- and p-nitroanilines and m-benzylaminoanilines in the reaction with cyanamide failed to yield the corresponding arylguanidines, and in the presence of 3-dimethylamino-1-(3-pyridyl)-2-propen-1-one formed 4-pyridyl-substituted pyrimidin-2-ylcyanamides and 2-amino-pyrimidines.
- Koroleva,Ignatovich, Zh.V.,Ignatovich,Gusak
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experimental part
p. 1222 - 1226
(2011/12/01)
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- Synthesis and apoptosis inducing ability of new anilino substituted pyrimidine sulfonamides as potential anticancer agents
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A series of anilino substituted pyrimidine sulfonamides were prepared and evaluated for their anticancer activity. These sulfonamides showed promising activity with IC50 values ranging from 5.6 to 12.3 μM. The detailed biological aspects of some of the promising compounds (3d, 3e and 3g) on the K562 cell line were studied. Interestingly, compounds induced G1 cell cycle arrest and down regulation of G1 phase cell cycle regulatory proteins such as cyclin D1, CDK4. These compounds also exhibited inhibition of NF-κB as well as its downstream target gene Akt1 and the phosphorylated form of AKt ser 474 proteins. One of the representative compound 3e could be considered as the potential lead for its development as a new anticancer agent.
- Kamal, Ahmed,Dastagiri,Janaki Ramaiah,Surendranadha Reddy,Vijaya Bharathi,Kashi Reddy,Victor Prem Sagar,Lakshminarayan Reddy,Pushpavalli,Pal-Bhadra, Manika
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experimental part
p. 5817 - 5824
(2011/12/22)
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- Synthesis and biological evaluation of anilino substituted pyrimidine linked pyrrolobenzodiazepines as potential anticancer agents
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A series of new anilino substituted pyrimidine linked pyrrolo[2,1-c][1,4] benzodiazepine (PBD) conjugates were prepared and evaluated for their anticancer activity. The effects of four promising PBD conjugates on cell cycle of cancerous cell line A375 were investigated. These compounds showed the characteristic features of apoptosis like enhancement in the levels of p53, release of cytochrome c, and cleavage of PARP.
- Kamal, Ahmed,Reddy, J. Surendranadha,Ramaiah, M. Janaki,Bharathi, E. Vijaya,Dastagiri,Reddy, M. Kashi,Pushpavalli,Pal-Bhadra, Manika
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scheme or table
p. 5232 - 5236
(2010/10/18)
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- Polymorphic forms of imatinib mesylate and processes for preparation of novel crystalline forms as well as amorphous and form alpha
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Solvates and crystalline forms of imatinib mesylate are described. Further, methods for preparing such solvates and crystalline forms of imatinib mesylate are described.
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Page/Page column 21
(2009/10/30)
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- Design and synthesis of novel 2-phenylaminopyrimidine (PAP) derivatives and their antiproliferative effects in human chronic myeloid leukemia cells
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A series of novel 2-phenylaminopyrimidine (PAP) derivatives structurally related to STI-571 were designed and synthesized. The abilities of these compounds to inhibit proliferation were tested in human chronic myeloid leukemia K562 cells. (E)-3-(2-bromophenyl)-N-[4-methyl-3-(4-pyridin-3-yl-pyrimidin-2- ylamino)phenyl]acrylamide( 12d) was the most effective cell growth inhibitor and was 3-fold more potent than STI-571.
- Chang, Sheng,Yin, Shi-Liang,Wang, Jian,Jing, Yong-Kui,Dong, Jin-Hua
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experimental part
p. 4166 - 4179
(2009/12/28)
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- FUSED PYRIDINES ACTIVE AS INHIBITORS OF C-MET
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Fused pyridines of formula (I) and the pharmaceutically acceptable salts thereof have activity as inhibitors of c-Met and may thus be used to treat various diseases and disorders including cancer. Processes for synthesizing the compounds are also described
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Page/Page column 34
(2009/09/05)
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- HETEROCYCLIC COMPOUNDS AND USES THEREOF
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The present invention provides compounds, pharmaceutically acceptable compositions thereof, and methods of using the same.
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Page/Page column 50
(2009/01/20)
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- COMPOUNDS AND COMPOSITIONS AS PROTEIN KINASE INHIBITORS
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The invention provides a novel class of compounds, pharmaceutical compositions comprising such compounds and methods of using such compounds to beat or prevent diseases or disorders associated with abnormal or deregulated kinase activity, particularly diseases or disorders that involve abnormal activation of c-kit, PDGFRα and PDGFRβ kinases. Formula (I).
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Page/Page column 29
(2008/12/05)
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- METHODS AND COMPOSITIONS RELATED TO WRAPPING OF DEHYDRONS
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This application describes a novel technology in drug discovery and drug-based imaging/detection: the wrapping technology. This technology is based on identified singularities in the structure of soluble proteins. In contrast with drug-design approaches based on standard structural considerations, the packing of a protein, or more precisely, its dehydron pattern, may be used as a selectivity filter to design small-molecule inhibitors. The wrapping technology described herein is a novel form of rational drug design for avoiding side effects in drug therapy and sharpening the inhibitory impact of drugs on the oncokinome.
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Page/Page column 25; 27; 35
(2008/12/06)
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- COMPOUNDS AND COMPOSITIONS AS C-KIT AND PDGFR KINASE INHIBITORS
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The invention provides a novel class of compounds, pharmaceutical compositions comprising such compounds and methods of using such compounds to treat or prevent diseases or disorders associated with abnormal or deregulated kinase activity, particularly diseases or disorders that involve abnormal activation of c-kit, PDGFR and PDGFR kinases.
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Page/Page column 26-27
(2009/01/20)
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- A PROCESS FOR PREPARATION OF IMATINIB BASE
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The invention provides an improved process for preparation of imatinib base and its pharmaceutically acceptable acid addition salts. The process allows for using simple starting materials, while simultaneously avoiding a laborious isolation and purification of intermediates and final product, therefore facilitating its scaling-up.
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Page/Page column 22
(2008/06/13)
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- Acid-base profiling of imatinib (Gleevec) and its fragments
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The site-specific basicities of imatinib (Gleevec, a new signal transduction inhibitor drug of chronic myeloid leukemia) and two of its fragment compounds were quantitated in terms of protonation macroconstants, microconstants, and group constants by NMR-pH and pH-potentiometric titrations. Sequential protonation of imatinib follows the N34, N11, N31, N13 order, in which N11 and N31 show commensurable basicity, but negligible intramolecular interaction. Fragment compounds include two "halves" of imatinib, and their moiety-specific basicities confirm the NMR-based protonation sequence of the parent compound. NMR-pH profiles, macro- and/or microscopic protonation schemes, and species-specific distribution diagrams are presented. On the basis of these data, imatinib is shown to be predominantly neutral, monocationic, and tricationic at intestinal, blood, and gastric pH, respectively. The molecular hypotheses on imatinib binding to the Bcr-Abl oncogene fusion protein are interpreted at the site-specific level in view of the moiety basicities of imatinib.
- Szakács, Zoltán,Béni, Szabolcs,Varga, Zoltán,?rfi, László,Kéri, Gy?rgy,Noszál, Béla
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p. 249 - 255
(2007/10/03)
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- PROCESS FOR THE PREPARATION OF THE ANTI-CANCER DRUG IMATINIB AND ITS ANALOGUES
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The present invention discloses a process of the manufacture of imatinib of formula (Ia) and its new analogues I (b-d) through the intermediate of formula (II). The mesylate (methane sulfonate ) salt of imatinib base (Ia[(4-(4-methylpiperazin-1-ylmethyl)-N4 [methyl-3-(4-pyridin-3-yl)pyrimidn-2-yl amino)phenyl]benzamide])is a popular life -saving drug to treat chronic myelogenous leukemia (CML).
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- Phenylaminopyrimidine derivatives and methods of use
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The present invention relates to phenylaminopyrimidine derivatives, processes for their preparation, pharmaceutical compositions containing them as active ingredient, methods for the treatment of disease states such as cancers associated with tyrosine kinases, especially Bcr-Abl, to their use as medicaments and to their use in the manufacture of medicaments for use in the production of inhibition of tyrosine kinase reducing effects in warm-blooded animals such as humans.
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- N-PHENYL-2-PYRIMIDINE-AMINE DERIVATIVES AND PROCESS FOR THE PREPARATION THEREOF
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The present invention relates to an N-phenyl-2-pyrimidine-amine derivative showing a superior effect on tumor, lung cancer, gastric cancer, etc. of warm-blooded animals and its salt. The present invention also relates to a process for preparing the compound and a pharmaceutical composition for the prevention and treatment of such diseases as tumor, lung cancer, gastric cancer, etc., which comprises the compound as an active ingredient.
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- N-PHENYL-2-PYRIMIDINE-AMINE DERIVATIVES AND PROCESS FOR THE PREPARATION THEREOF
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The present invention relates to an N-Phenyl-2-pyrimidine-aminine derivative showing a superior effect on lung cancer, gastric cancer, colon cancer, pancreatic cancer, hepatoma, prostatic cancer, breast cancer, chronic or accute leukemia, hematologic malignancy, encephalophyma, bladder cancer, rectal cancer or cervical cancer, etc. of warm blooded animals and its salt. The present invention also relates to a process for preparing the compound, and to a pharmaceutical composition for the treatment of the above various disease, which comprises an effective amount of the compound as an active ingredient together with pharmaceutically acceptable inert carriers.
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Page 8-9; 13
(2010/02/09)
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- N-phenyl-2-pyrimidine-amine derivatives and process for the preparation thereof
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The present invention relates to an N-phenyl-2-pyrimidine-amine derivative showing a superior effect on lung cancer, gastric cancer, colon cancer, pancreatic cancer, hepatoma, prostatic cancer, breast cancer, chronic or acute leukemia, hematologic malignancy, encephalophyma, bladder cancer, rectal cancer, or cervical cancer, etc. of warm-blooded animals and its salt. The present invention also relates to a process for preparing the compound, and to a pharmaceutical composition for the treatment of the above various diseases, which comprises an effective amount of the compound as an active ingredient together with pharmaceutically acceptable inert carriers.
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- PYRIMIDINE DERIVATIVES AND PROCESSES FOR THE PREPARATION THEREOF
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There are described N-phenyl-2-pyrimidine-amine derivatives of formula I wherein R1 is 4-pyrazinyl, 1-methyl-1H-pyrrolyl, amino- or amino-lower alkyl-substituted phenyl wherein the amino group in each case is free, alkylated or acylated, 1H-indolyl or 1H-imidazolyl bonded at a five-membered ring carbon atom, or unsubstituted or lower alkyl-substituted pyridyl bonded at a ring carbon atom and unsubstituted or substituted at the nitrogen atom by oxygen, R2, R3, R9, X, Y, n and R10 are defined in claim 1 These compounds can be used, for example, in the therapy of tumoral diseases.There are described N-phenyl-2-pyrimidine-amine derivatives of formula I (I) wherein R1 is 4-pyrazinyl, 1-methyl-1H-pyrrolyl, amino- or amino-lower alkyl-substituted phenyl wherein the amino group in each case is free, alkylated or acylated, 1H-indolyl or 1H-imidazolyl bonded at a five-membered ring carbon atom, or unsubstituted or lower alkyl-substituted pyridyl bonded at a ring carbon atom and unsubstituted or substituted at the nitrogen atom by oxygen, R2, R3, R9, X, Y, n and R10 are defined in claim 1. These compounds can be used, for example, in the therapy of tumoral diseases.
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