- N - (4 - (3 - amino - 1 H - indazole - 4 - yl) phenyl) - N' - (2 - fluoro - 5 - methylphenyl) urea intermediate preparation method
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The invention provides a preparation method of N-(4-(3-amino-1H-indazol-4-yl) phenyl)-N'-(2-fluoro-5-methylphenyl) urea and an intermediate thereof. Specifically, the invention provides a preparation method of a borate ester compound as shown in a formula I, and the preparation method comprises the following steps: enabling a compound as shown in a formula III to react with a compound as shown in a formula IV to generate a compound as shown in a formula V, and enabling the compound as shown in the formula V to react with a boron reagent to generate the compound as shown in the formula I. The method has the characteristics of convenience in reaction, easiness in obtainment of the intermediate, high yield, high product purity of above 98.5%, low cost of raw materials and the like, and is suitable for industrial application.
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Paragraph 0176-0179
(2018/03/02)
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- Linifanib-a multi-targeted receptor tyrosine kinase inhibitor and a low molecular weight gelator
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In this study we demonstrate that linifanib, a multi-targeted receptor tyrosine kinase inhibitor, with a key urea containing pharmacophore, self-assembles into a hydrogel in the presence of low amounts of solvent. We demonstrate the role of the urea functional group and that of fluorine substitution on the adjacent aromatic ring in promoting self-assembly. We have also shown that linifanib has superior mechanical strength to two structurally related analogues and hence increased potential for localisation at an injection site for drug delivery applications. This journal is
- Marlow, Maria,Al-Ameedee, Mohammed,Smith, Thomas,Wheeler, Simon,Stocks, Michael J.
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p. 6384 - 6387
(2015/04/14)
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- CRYSTALLINE CHEMOTHERAPEUTIC
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N-[4-(3-Amino-1H-indazol-4-yl)phenyl]-N'-(2-fluoro-5-methylphenyl)urea Crystalline Form 2, ways to make it, formulations comprising it and made with it and methods of treating patients having disease using it are disclosed.
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Page/Page column 13-14
(2009/05/28)
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- CRYSTALLINE CHEMOTHERAPEUTIC
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N-[4-(3-Amino-1H-indazol-4-yl)phenyl]-N'-(2-fluoro-5-methylphenyl)urea Crystalline Form 1, ways to make it, formulations comprising it and made with it and methods of treating patients having disease using it are disclosed.
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Page/Page column 13
(2009/05/28)
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- The discovery and development of a safe, practical synthesis of ABT-869
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The discovery, development and implementation of two chemical routes to ABT-869 is reported. Optimization of the first-generation heterocycle formation and Suzuki coupling is briefly described. Key features of the second-generation synthesis include the development of a safe hydrazine condensation by utilizing an inorganic base to increase the onset temperature of exothermic decomposition. The second-generation Suzuki reaction is discussed in detail, culminating in the use of an oxygen monitor as a PAT to maximize reproducibility on scale.
- Kruger, Albert W.,Rozema, Michael J.,Chu-Kung, Alexander,Gandarilla, Jorge,Haight, Anthony R.,Kotecki, Brian J.,Richter, Steven M.,Schwartz, Albert M.,Wang, Zhe
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experimental part
p. 1419 - 1425
(2010/04/22)
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- Discovery of N-(4-(3-amino-1H-indazol-4-yl)phenyl)-N′-(2-fluoro-5- methylphenyl)urea (ABT-869), a 3-aminoindazole-based orally active multitargeted receptor tyrosine kinase inhibitor
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In our continued efforts to search for potent and novel receptor tyrosine kinase (RTK) inhibitors as potential anticancer agents, we discovered, through a structure-based design, that 3-aminoindazole could serve as an efficient hinge-binding template for kinase inhibitors. By incorporating an N,N′-diaryl urea moiety at the C4-position of 3-aminodazole, a series of RTK inhibitors were generated, which potently inhibited the tyrosine kinase activity of the vascular endothelial growth factor receptor and the platelet-derived growth factor receptor families. A number of compounds with potent oral activity were identified by utilizing an estradiol-induced mouse uterine edema model and an HT1080 human fibrosarcoma xenograft tumor model. In particular, compound 17p (ABT-869) was found to possess favorable pharmacokinetic profiles across different species and display significant tumor growth inhibition in multiple preclinical animal models.
- Dai, Yujia,Hartandi, Kresna,Ji, Zhiqin,Ahmed, Asma A.,Albert, Daniel H.,Bauch, Joy L.,Bouska, Jennifer J.,Bousquet, Peter F.,Cunha, George A.,Glaser, Keith B.,Harris, Christopher M.,Hickman, Dean,Guo, Jun,Li, Junling,Marcotte, Patrick A.,Marsh, Kennan C.,Moskey, Maria D.,Martin, Ruth L.,Olson, Amanda M.,Osterling, Donald J.,Pease, Lori J.,Soni, Niru B.,Stewart, Kent D.,Stoll, Vincent S.,Tapang, Paul,Reuter, David R.,Davidsen, Steven K.,Michaelides, Michael R.
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p. 1584 - 1597
(2008/02/01)
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