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Synthetic studies of centromere-associated protein-E (CENP-E) inhibitors: 1.Exploration of fused bicyclic core scaffolds using electrostatic potential map. Bioorg Med Chem 2013; 21:5488-502. [PMID: 23816042 DOI: 10.1016/j.bmc.2013.05.067] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 05/28/2013] [Accepted: 05/29/2013] [Indexed: 11/20/2022]
Abstract
Centromere-associated protein-E (CENP-E), a mitotic kinesin that plays an important role in mitotic progression, is an attractive target for cancer therapeutic drugs. For the purpose of developing novel CENP-E inhibitors as cancer therapeutics, we investigated a fused bicyclic compound identified by high throughput screening, 4-oxo-4,5-dihydrothieno[3,4-c]pyridine-6-carboxamide 1a. Based on this scaffold, we designed inhibitors for efficient binding at the L5 site in CENP-E utilizing homology modeling as well as electrostatic potential map (EPM) analysis to enhance CENP-E inhibitory activity. This resulted in a new lead, 5-bromoimidazo[1,2-a]pyridine 7, which showed potent CENP-E enzyme inhibition (IC50: 50nM) and cellular activity with accumulation of phosphorylated histone H3 in HeLa cells. Our homology model and EPM analysis proved to be useful tools for the rational design of CENP-E inhibitors.
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2
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Nakai K, Kurahashi T, Matsubara S. Synthesis of Quinolones by Nickel-Catalyzed Cycloaddition via Elimination of Nitrile. Org Lett 2013; 15:856-9. [DOI: 10.1021/ol303546p] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kenichiro Nakai
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan, and JST, ACT-C, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - Takuya Kurahashi
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan, and JST, ACT-C, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - Seijiro Matsubara
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan, and JST, ACT-C, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
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Guéret C, Le Bas MD, Perrio C, Dauphin F, Dhilly M, Chazalviel L, Emond P, Chalon S, Tymciu S, Guilloteau D, Lasne MC, Barré L. Synthesis and radiosynthesis with a positron emitter of EP 00652218, a potent antagonist of NK1 receptor, and of a fluoro analog for in vivo evaluation of the substance P receptor by pet. J Labelled Comp Radiopharm 2012. [DOI: 10.1002/jlcr.2580440199] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Shirai J, Sugiyama H, Morimoto S, Maezaki H, Yamamoto Y, Okanishi S, Kamo I, Matsumoto S, Ishigami K, Inatomi N, Imanishi A, Kawamoto M, Tarui N, Hashimoto T, Ikeura Y. Novel 3-phenylpiperidine-4-carboxamides as highly potent and orally long-acting neurokinin-1 receptor antagonists with reduced CYP3A induction. Bioorg Med Chem 2011; 20:962-77. [PMID: 22189275 DOI: 10.1016/j.bmc.2011.11.048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 11/22/2011] [Accepted: 11/22/2011] [Indexed: 10/14/2022]
Abstract
The synthesis and biological evaluation of a series of novel 3-phenylpiperidine-4-carboxamide derivatives are described. These compounds are generated by hybridization of the substructures from two types of tachykinin NK(1) receptor antagonists. Compound 42 showed high metabolic stability and excellent efficacy in the guinea-pig GR-73637-induced locomotive activity assay at 1 and 24h after oral administration. It also exhibited good pharmacokinetic profiles in four animal species, and a low potential in a pregnane X receptor induction assay.
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Affiliation(s)
- Junya Shirai
- Pharmaceutical Research Division, Takeda Pharmaceutical Co. Ltd, 26-1, Muraoka-higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
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Engstrom KM, Baize AL, Franczyk TS, Kallemeyn JM, Mulhern MM, Rickert RC, Wagaw S. Improved Synthesis of 3-Substituted-4-amino-[3,2-c]-thienopyridines. J Org Chem 2009; 74:3849-55. [DOI: 10.1021/jo9003772] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kenneth M. Engstrom
- Global Pharmaceutical R&D, Process Research & Development, Abbott Laboratories, 1401 Sheridan Road, North Chicago, Illinois 60064-6290
| | - Amanda L. Baize
- Global Pharmaceutical R&D, Process Research & Development, Abbott Laboratories, 1401 Sheridan Road, North Chicago, Illinois 60064-6290
| | - Thaddeus S. Franczyk
- Global Pharmaceutical R&D, Process Research & Development, Abbott Laboratories, 1401 Sheridan Road, North Chicago, Illinois 60064-6290
| | - Jeffrey M. Kallemeyn
- Global Pharmaceutical R&D, Process Research & Development, Abbott Laboratories, 1401 Sheridan Road, North Chicago, Illinois 60064-6290
| | - Mathew M. Mulhern
- Global Pharmaceutical R&D, Process Research & Development, Abbott Laboratories, 1401 Sheridan Road, North Chicago, Illinois 60064-6290
| | - Robert C. Rickert
- Global Pharmaceutical R&D, Process Research & Development, Abbott Laboratories, 1401 Sheridan Road, North Chicago, Illinois 60064-6290
| | - Seble Wagaw
- Global Pharmaceutical R&D, Process Research & Development, Abbott Laboratories, 1401 Sheridan Road, North Chicago, Illinois 60064-6290
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Zhang A, Ding C, Cheng C, Yao Q. Convenient synthesis of 2,7-naphthyridine Lophocladines A and B and their analogues. ACTA ACUST UNITED AC 2007; 9:916-9. [PMID: 17927143 DOI: 10.1021/cc700135h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ao Zhang
- Synthetic & Medicinal Chemistry Laboratory, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China 201203.
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Gross H, Goeger DE, Hills P, Mooberry SL, Ballantine DL, Murray TF, Valeriote FA, Gerwick WH. Lophocladines, bioactive alkaloids from the red alga Lophocladia sp. JOURNAL OF NATURAL PRODUCTS 2006; 69:640-4. [PMID: 16643042 PMCID: PMC2668242 DOI: 10.1021/np050519e] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Lophocladines A (1) and B (2), two 2,7-naphthyridine alkaloids, were isolated from the marine red alga Lophocladiasp. collected in the Fijian Islands. Their structures were deduced on the basis of high-resolution mass spectra and one- and two-dimensional NMR spectroscopy. Lophocladine A (1) displayed affinity for NMDA receptors and was found to be a delta-opioid receptor antagonist, whereas lophocladine B (2) exhibited cytotoxicity to NCI-H460 human lung tumor and MDA-MB-435 breast cancer cell lines. Immunofluorescence studies indicated that the cytotoxicity of lophocladine B (2) was correlated with microtubule inhibition. This is the first reported occurrence of alkaloids based on a 2,7-naphthyridine skeleton from red algae.
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Affiliation(s)
- Harald Gross
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California at San Diego, La Jolla, CA 92093-0212, USA
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9
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Seto S, Tanioka A, Ikeda M, Izawa S. Design, synthesis, and evaluation of novel 2-substituted-4-aryl-6,7,8,9-tetrahydro-5H-pyrimido[4,5-b][1,5]oxazocin-5-ones as NK1 antagonists. Bioorg Med Chem 2005; 13:5717-32. [PMID: 15993086 DOI: 10.1016/j.bmc.2005.06.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2005] [Revised: 05/27/2005] [Accepted: 06/01/2005] [Indexed: 11/19/2022]
Abstract
A series of novel bicyclic pyrimidine derivatives was prepared as part of a search for NK1 antagonist aimed at the treatment of urinary incontinence. Among them, 3g, a pyrimido[4,5-b][1,5]oxazocine derivative, bearing a 4-acetylpiperazinyl group and a 2-methylphenyl group, was shown to have potent NK1 antagonist activity with a K(B) value of 0.105 nM and markedly increased the effective bladder capacity of guinea pigs (59.4% at 0.3 mg/kg iv and 62.8% at 3 mg/kg id). Furthermore, the effect of 3g on bladder function appeared to differ from that of tolterodine, another classical anti-pollakiuria agent, as determined by the distention-induced rhythmic bladder contraction assay using a urethane-anesthetized guinea pig model. Compound 3g is expected to be a promising agent for the treatment of urinary incontinence.
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Affiliation(s)
- Shigeki Seto
- Discovery Research Laboratories, Kyorin Pharmaceutical Co., Ltd., 2399-1, Nogi, Nogi-machi, Shimotsuga-gun, Tochigi 329-0114, Japan.
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Bagot-Guéret C, Le Bas MD, Tymciu S, Darabantu M, Emond P, Guilloteau D, Lasne MC, Wijkhuisen A, Barré L, Perrio C. Synthesis and biological evaluation of halogenated naphthyridone carboxamides as potential ligands for in vivo imaging studies of substance P receptors. Bioconjug Chem 2003; 14:629-41. [PMID: 12757389 DOI: 10.1021/bc025656r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
With the aim of developing new radioligands for in vivo studies of substance P receptors using positron emission tomography or single photon emission computed tomography, 2- and 3-halo naphthyridone-6-carboxamide derivatives were synthesized. Their affinities toward the target receptors were evaluated on CHO cells and compared to the unsubstituted analogue EP 00652218 (IC(50) = 100 nM +/- 20). The IC(50) value was not altered in the case of 2-chloro compound 1 (IC(50) = 100 nM +/- 15) and only slightly reduced for the 2-fluoro and -iodo analogues 6 and 8 (IC(50) = 500 nM +/- 80). A drastic reduction in binding (IC(50) > 1000 nM) was observed for the halogenated compounds 2-5, 7, and 9.
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Affiliation(s)
- Caroline Bagot-Guéret
- Groupe de Développements Méthodologiques en Tomographie par Emission de Positons, UMR CEA, Université de Caen-Basse Normandie, Centre Cyceron, 15 Boulevard Henri Becquerel, 14070 Caen Cedex, France
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11
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Miki T, Kori M, Fujishima A, Mabuchi H, Tozawa RI, Nakamura M, Sugiyama Y, Yukimasa H. Syntheses of fused heterocyclic compounds and their inhibitory activities for squalene synthase. Bioorg Med Chem 2002; 10:385-400. [PMID: 11741787 DOI: 10.1016/s0968-0896(01)00289-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
A variety of fused heterocyclic compounds (2-11) were synthesized as a modification of the lead compound 1a and evaluated for their inhibition of squalene synthase. 4,1-Benzothiazepine derivative 2, 1,4-benzodiazepine derivative 6, 1,3-benzodiazepine derivative 7, 1-benzazepine derivative 9, and 4,1-benzoxazocine derivative 10 potently inhibited squalene synthase activity, whereas the 4,1-benzoxazepine derivatives 1 was the most potent inhibitor. 4,1-Benzothiazepine S-oxide derivative 4, 1,4-benzodiazepine derivative 5, 1,3,4-benzotriazepine derivative 8, and 1,2,3,4-tetrahydroquinoline derivative 11 were found to be weakly active. Comparison of the X-ray structures of these compounds (1a, 2, 4, 5, 7 and 10) suggests that orientation of the 5- (or 6)-phenyl group is important for activity.
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Affiliation(s)
- Takashi Miki
- Takeda Chemical Industries, Ltd., Pharmaceutical Research Division, 2-17-85, Juso-Honmachi, Osaka 532-8686, Yodogawa-ku, Japan.
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Le Bas MD, Gueret C, Emond P, Perrio C, Chalon S, Dhilly M, Dauphin F, Cliazalviel L, Tymciu S, Barré L, Guilloteau D, Lasne MC. Radioiodinated analogs of EP 00652218 for the exploration of the tachykinin NK1 receptor by spect. J Labelled Comp Radiopharm 2001. [DOI: 10.1002/jlcr.2580440198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Natsugari H, Ikeura Y, Kamo I, Ishimaru T, Ishichi Y, Fujishima A, Tanaka T, Kasahara F, Kawada M, Doi T. Axially chiral 1,7-naphthyridine-6-carboxamide derivatives as orally active tachykinin NK(1) receptor antagonists: synthesis, antagonistic activity, and effects on bladder functions. J Med Chem 1999; 42:3982-93. [PMID: 10508446 DOI: 10.1021/jm990220r] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Cyclic analogues of N-[3,5-bis(trifluoromethyl)benzyl]-7,8-dihydro-N, 7-dimethyl-5-(4-methylphenyl)-8-oxo-1,7-naphthyridine-6-carboxamide (1) having a 6-9-membered ring (6-9) were synthesized and evaluated for NK(1) antagonistic activities. The 8-membered ring compound with a beta-methyl group at the C((9))-position, (aR,9R)-7-[3, 5-bis(trifluoromethyl)benzyl]-8,9,10, 11-tetrahydro-9-methyl-5-(4-methylphenyl)-7H-[1,4]diazocino[2,1-g] [1, 7]naphthyridine-6,13-dione [(aR,9R)-8b], was atropodiastereoselectively synthesized by cyclization of a chiral intermediate, 10g. On the other hand, the 7-membered ring compound with a beta-methyl group at the C((9))-position [(9S)-7b] was obtained as an equilibrium mixture of atropisomers with a ratio of ca. 3:2 in solution at room temperature (measured by NMR in CDCl(3)). Compounds (9S)-7b and (aR,9R)-8b exhibited excellent antagonistic activities both in vitro [IC(50) (inhibition of [(125)I]BH-SP binding in human IM-9 cells) = 0.28 and 0.45 nM, respectively] and in vivo (iv and po). Significantly, the in vitro activity of (aR, 9R)-8b was ca. 750-fold higher than that of its enantiomer (aS, 9S)-8b, ca. 40-fold higher than its atropisomer (aS,9R)-8b, and ca. 20-fold higher than its diastereomer (aR,9S)-8b. The structure-activity relationships in this series, along with the X-ray analysis of (aR,9R)-8b, indicated that the stereochemistry around the -C((6))(=O)-N((7))-CH(2)Ar moiety is important for NK(1) receptor recognition. The NK(1) antagonists showed effects on bladder functions in guinea pigs upon intravenous injection: i.e., the antagonists increased the shutdown time of distension-induced rhythmic bladder contractions and the bladder volume threshold, and the effects on the shutdown time were found to correlate well with the NK(1) antagonistic activities. Compound (aR,9R)-8b has been identified as a potential clinical candidate for the treatment of bladder function disorders.
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Affiliation(s)
- H Natsugari
- Pharmaceutical Research Division and Technology Development Department, Takeda Chemical Industries, Ltd., 2-17-85, Jusohonmachi, Yodogawa-ku, Osaka 532-8686, Japan.
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Ikeura Y, Ishichi Y, Tanaka T, Fujishima A, Murabayashi M, Kawada M, Ishimaru T, Kamo I, Doi T, Natsugari H. Axially chiral N-benzyl-N,7-dimethyl-5-phenyl-1, 7-naphthyridine-6-carboxamide derivatives as tachykinin NK1 receptor antagonists: determination of the absolute stereochemical requirements. J Med Chem 1998; 41:4232-9. [PMID: 9784098 DOI: 10.1021/jm980042m] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A potent and orally active NK1 antagonist, trans-N-[3, 5-bis(trifluoromethyl)benzyl]-7,8-dihydro-N, 7-dimethyl-5-(4-methylphenyl)-8-oxo-1,7-naphthyridine-6-carboxamide (1t), was shown to exist as a mixture of separable and stable (R)- and (S)-atropisomers (1t-A and 1t-B) originating from the restricted rotation around the -C(6)-C(=O)- bond; the antagonistic activities of 1t-A were ca. 6-13-fold higher than those of 1t-B. Analogues of 1t (3), which have (S)- and (R)-methyl groups at the benzylic methylene portion of 1t, were prepared and separated into the diastereomeric atropisomers, 3a-A, 3a-B and 3b-A, 3b-B, in enantiomerically pure forms. Among the four isomers of 3, the (aR, S)-enantiomer (3a-A) exhibited the most potent antagonistic activities with an IC50 value of 0.80 nM (in vitro inhibition of [125I]BH-SP binding in human IM-9 cells) and ED50 values of 9.3 micrograms/kg (iv) and 67.7 micrograms/kg (po) (in vivo inhibition of capsaicin-induced plasma extravasation in guinea pig trachea), while the activity of the (aS,R)-enantiomer (3b-B) was the weakest with an IC50 value of 620 nM. The structure-activity relationships in this series of antagonists indicate that the (R)-configuration at the axial bond and the stacking (or stacking-like) conformation between the two phenyl rings as shown in 1t-A and 3a-A are essential for high-affinity binding and suggest that the amide moiety functions as a hydrogen bond acceptor in the interaction with the receptor.
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Affiliation(s)
- Y Ikeura
- Pharmaceutical Research Division and Technology Development Department, Takeda Chemical Industries, Ltd., 2-17-85, Jusohonmachi, Yodogawa-ku, Osaka 532, Japan
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