- PROCESS FOR THE PREPARATION OF PANOBINOSTAT
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The present invention relates to a new process for the preparation of Panobinostat and intermediates thereof.
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Page/Page column 13-14
(2021/09/03)
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- Development and pre-clinical testing of a novel hypoxia-activated KDAC inhibitor
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Tumor hypoxia is associated with therapy resistance and poor patient prognosis. Hypoxia-activated prodrugs, designed to selectively target hypoxic cells while sparing normal tissue, represent a promising treatment strategy. We report the pre-clinical efficacy of 1-methyl-2-nitroimidazole panobinostat (NI-Pano, CH-03), a novel bioreductive version of the clinically used lysine deacetylase inhibitor, panobinostat. NI-Pano was stable in normoxic (21% O2) conditions and underwent NADPH-CYP-mediated enzymatic bioreduction to release panobinostat in hypoxia (2). Treatment of cells grown in both 2D and 3D with NI-Pano increased acetylation of histone H3 at lysine 9, induced apoptosis, and decreased clonogenic survival. Importantly, NI-Pano exhibited growth delay effects as a single agent in tumor xenografts. Pharmacokinetic analysis confirmed the presence of sub-micromolar concentrations of panobinostat in hypoxic mouse xenografts, but not in circulating plasma or kidneys. Together, our pre-clinical results provide a strong mechanistic rationale for the clinical development of NI-Pano for selective targeting of hypoxic tumors.
- Skwarska, Anna,Calder, Ewen D.D.,Sneddon, Deborah,Bolland, Hannah,Odyniec, Maria L.,Mistry, Ishna N.,Martin, Jennifer,Folkes, Lisa K.,Conway, Stuart J.,Hammond, Ester M.
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p. 1258 - 13,1270
(2021/09/16)
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- Zap-Pano: a Photocaged Prodrug of the KDAC Inhibitor Panobinostat
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We report the synthesis and biological evaluation of a light-activated (caged) prodrug of the KDAC inhibitor panobinostat (Zap-Pano). We demonstrate that addition of the 4,5-dimethoxy-2-nitrobenzyl group to the hydroxamic acid oxygen results in an inactive prodrug. In two cancer cell lines we show that photolysis of this compound releases panobinostat and an unexpected carboxamide analogue of panobinostat. Photolysis of Zap-Pano causes an increase in H3K9Ac and H3K18Ac, consistent with KDAC inhibition, in an oesophageal cancer cell line (OE21). Irradiation of OE21 cells in the presence of Zap-Pano results in apoptotic cell death. This compound is a useful research tool, allowing spatial and temporal control over release of panobinostat.
- Troelsen, Kathrin S.,Calder, Ewen D. D.,Skwarska, Anna,Sneddon, Deborah,Hammond, Ester M.,Conway, Stuart J.
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p. 3691 - 3700
(2021/08/09)
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- Panobinostat intermediate as well as synthesis and application thereof
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The invention belongs to the field of medicine synthesis and in particular relates to a panobinostat intermediate as well as synthesis and application thereof. The intermediate is shown as a formula II and is obtained by taking 2-methyltryptamine and 4-chloromethylbenzaldehyde to react; raw materials are cheap and easy to obtain, reaction conditions are moderate and the operation is simple; the intermediate is used as a raw material to prepare panobinostat, the cost is low, reaction steps are few, the purity is high, the reaction conditions are moderate and the operation is simple; the qualitycontrol and cost reduction of panobinostat crude drugs are facilitated. (The formula II is shown in the description.).
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Paragraph 0062-0064
(2018/12/02)
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- A handkerchief compared to department he and its key intermediate for the preparation of (by machine translation)
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The invention belongs to the field of drug synthesis, in particular to a handkerchief compared to department he and its key intermediate of the preparation method, the method to cheap 4 - halogenated methyl formaldehyde, 2 - a primary amine and phosphine acyl acetic acid methyl ester compound as raw material, in the same pot obtain key intermediate (E)- 3 - [4 - [[2 - (2 - methyl - 1 H - indole - 3 - 3 yl) ethylamine] methyl] phenyl] acrylic acid methyl ester, obtained by the reaction with hydroxylamine handkerchief compared to department he, the method not only raw materials are cheap and easily obtained, and the cost is low, and there are few reaction steps, high yield and purity, mild reaction conditions at the same time, the operation is simple, is easy for industrial production. (by machine translation)
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Paragraph 0044-0046
(2018/11/22)
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- An improved and efficient synthesis of panobinostat
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An improved and efficient method for the synthesis of panobinostat was developed. The commercially available starting material 4-(chloromethyl)benzaldehyde was converted to (E)-methyl 3-[4-(chloromethyl)phenyl]acrylate via the Wittig-Horner reaction and was then directly condensed with 2-(2-methyl-1H-indol-3-yl)ethanamine to afford the key intermediate (E)-methyl 3-[4-({[2-(2-methyl-1H-indol- 3-yl)ethyl]amino}methyl)phenyl]acrylate in a one-pot synthesis reactor. Subsequently a nucleophilic substitution reaction was carried out smoothly to generate the desired compound. The key intermediate and target compound were characterised by HRMS, 1H NMR and 13C NMR. This procedure is operationally simple and would be more suitable for industrial production.
- Chen, Shanwen,Zhang, Peiming,Chen, Huali,Zhang, Pu,Yu, Yu,Gan, Zongjie
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p. 471 - 473
(2018/10/15)
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- NOVEL SALTS AND POLYMORPHIC FORMS OF PANOBINOSTAT
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The present invention provides novel crystalline polymorphic form of DL-lactate salt of Panobinostat of Formula-I. This invention also provides process for preparation of crystalline forms of Panobinostat DL-lactate. Further, the present invention relates to a novel pharmaceutically acceptable salts and solid forms of Panobinostat.
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Page/Page column 12
(2018/04/12)
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- Synthesis method of panobinostat
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The invention discloses a synthesis method of panobinostat. The synthesis method comprises a step of synthesizing 2-methyl tryptamine or hydrochloride thereof, namely taking 2-methylindole as a raw material, conducting reaction with chloroacetyl chloride or bromoacetyl bromide, and conducting reaction with potassium phthalimide to obtain the 2-methyl tryptamine. According to the technical scheme adopted by the invention, influence of toxic raw materials on the safety of a panobinostat product is avoided; meanwhile, the invention provides the synthesis method applicable to industrial production.
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Paragraph 0089; 0090; 0091
(2017/08/29)
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- PROCESS FOR MAKING N-HYDROXY-3-[4-[[[2-(2-METHYL-1H-INDOL-3-YL)ETHYL]AMINO]METHYL]PHENYL]-2E-2-PROPENAMIDE AND STARTING MATERIALS THEREFOR
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N-hydroxy-3-[4-[[[2-(2-methyl-1H-indol-3-yl)ethyl]amino]methyl]phenyl]-2E-2-propenamide and starting materials therefor are prepared by new synthetic methods.
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Page/Page column 5
(2009/12/24)
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- POLYMORPHS OF N-HYDROXY-3-[4-[[[2-(2-METHYL-1H-INDOL-3-YL)ETHYL]AMINO]METHYL]PHENYL]-2E-2-PROPENAMIDE
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Polymorphic forms of N-hydroxy-3-[4-[[[2-(2-methyl-1H-indol-3-yl)ethyl]amino]methyl]phenyl]-2E-2-propenamide free base and salts thereof are prepared by various processes.
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Page/Page column 15
(2009/08/14)
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- PROCESS FOR MAKING SALTS OF N-HYDROXY-3-[4-[[[2-(2-METHYL-1H-INDOL-3-YL)ETHYL]AMINO]METHYL]PHENYL]-2E-2-PROPENAMIDE
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Salts of N-hydroxy-3-[4-[[[2-(2-methyl-1H-indol-3-yl)ethyl]amino]methyl]phenyl]-2E-2-propenamide are prepared by various methods.
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Page/Page column 13-14
(2009/07/25)
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- METHOD OF USE OF DEACETYLASE INHIBITORS
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The present invention provides methods of treating and/or preventing pathologic cardiac hypertrophy and heart failure comprising administering hydroxamate compounds which are deacetylase inhibitors.
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Page/Page column 25-26
(2008/06/13)
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