1
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Avdeeva VV, Garaev TM, Malinina EA, Zhizhin KY, Kuznetsov NT. Physiologically Active Compounds Based on Membranotropic Cage Carriers–Derivatives of Adamantane and Polyhedral Boron Clusters (Review). RUSS J INORG CHEM+ 2022. [PMCID: PMC8824546 DOI: 10.1134/s0036023622010028] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Data on compounds based on cage structures―boron clusters (polyhedral boron hydrides, carboranes, metallacarboranes) and compounds of the adamantane series, which possess physiological activity, have been generalized. The main emphasis is placed on the antiviral activity of the compounds. The mechanism of the possible action of the replication inhibitors of influenza A virus strains is considered, the molecular model of viroporin inhibitors is discussed. The proposed model consists of a cage hydrophobic core that performs the function of a membranotropic carrier (a boron cluster or adamantane fragment), into which physiologically active functional groups are introduced. The relationship between the structure of the cage compound with the introduced substitute and the biologically active properties of this molecular structure has been analyzed.
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Affiliation(s)
- V. V. Avdeeva
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | - T. M. Garaev
- Gamaleya Federal Research Center for Epidemiology and Microbiology, Ministry of Health of Russian Federation, 123098 Moscow, Russia
| | - E. A. Malinina
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | - K. Yu. Zhizhin
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | - N. T. Kuznetsov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
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2
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Comprehensive exploration of chemical space using trisubstituted carboranes. Sci Rep 2021; 11:24101. [PMID: 34916538 PMCID: PMC8677773 DOI: 10.1038/s41598-021-03459-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 11/24/2021] [Indexed: 11/16/2022] Open
Abstract
A total of 42 trisubstituted carboranes categorised into five scaffolds were systematically designed and synthesized by exploiting the different reactivities of the twelve vertices of o-, m-, and p-carboranes to cover all directions in chemical space. Significant inhibitors of hypoxia inducible factor transcriptional activitay were mainly observed among scaffold V compounds (e.g., Vi–m, and Vo), whereas anti-rabies virus activity was observed among scaffold V (Va–h), scaffold II (IIb–g), and scaffold IV (IVb) compounds. The pharmacophore model predicted from compounds with scaffold V, which exhibited significant anti-rabies virus activity, agreed well with compounds IIb–g with scaffold II and compound IVb with scaffold IV. Normalized principal moment of inertia analysis indicated that carboranes with scaffolds I–V cover all regions in the chemical space. Furthermore, the first compounds shown to stimulate the proliferation of the rabies virus were found among scaffold V carboranes.
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Asawa Y, Nishida K, Kawai K, Domae K, Ban HS, Kitazaki A, Asami H, Kohno JY, Okada S, Tokuma H, Sakano D, Kume S, Tanaka M, Nakamura H. Carborane as an Alternative Efficient Hydrophobic Tag for Protein Degradation. Bioconjug Chem 2021; 32:2377-2385. [PMID: 34699716 DOI: 10.1021/acs.bioconjchem.1c00431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Carboranes 1 and 2 were designed and synthesized for hydrophobic tag (HyT)-induced degradation of HaloTag fusion proteins. The levels of the hemagglutinin (HA)-HaloTag2-green fluorescent protein (EGFP) stably expressed in Flp-In 293 cells were significantly reduced by HyT13, HyT55, and carboranes 1 and 2, with expression levels of 49, 79, 43, and 65%, respectively, indicating that carborane is an alternative novel hydrophobic tag (HyT) for protein degradation under an intracellular environment. To clarify the mechanism of HyT-induced proteolysis, bovine serum albumin (BSA) was chosen as an extracellular protein and modified with maleimide-conjugated m-carborane (MIC). The measurement of the ζ-potentials and the lysine residue modification with fluorescein isothiocyanate (FITC) of BSA-MIC conjugates suggested that the conjugation of carborane induced the exposure of lysine residues on BSA, resulting in the degradation via ubiquitin E3 ligase-related proteasome pathways in the cell.
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Affiliation(s)
- Yasunobu Asawa
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
| | - Kei Nishida
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kazuki Kawai
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
| | - Kiyotaka Domae
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
| | - Hyun Seung Ban
- Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, South Korea
| | - Akihiro Kitazaki
- Department of Chemistry, Facility of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Hiroya Asami
- Department of Chemistry, Facility of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Jun-Ya Kohno
- Department of Chemistry, Facility of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Satoshi Okada
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Hiraku Tokuma
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
| | - Daisuke Sakano
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
| | - Shoen Kume
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
| | - Masaru Tanaka
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Hiroyuki Nakamura
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
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4
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Gruzdev DA, Levit GL, Krasnov VP, Charushin VN. Carborane-containing amino acids and peptides: Synthesis, properties and applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213753] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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5
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Comparative DFT study of inclusion complexes of thymidine-carborane conjugate with β-cyclodextrin and heptakis(2,6-O-dimethyl)-β-cyclodextrin in water. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113767] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Novel p-carborane-containing multitarget anticancer agents inspired by the metabolism of 17β-estradiol. Bioorg Med Chem 2017; 25:6371-6378. [DOI: 10.1016/j.bmc.2017.10.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 10/10/2017] [Indexed: 12/11/2022]
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7
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Żołnierczyk JD, Olejniczak AB, Mieczkowski A, Błoński JZ, Kiliańska ZM, Robak T, Leśnikowski ZJ. In vitro antileukemic activity of novel adenosine derivatives bearing boron cluster modification. Bioorg Med Chem 2016; 24:5076-5087. [DOI: 10.1016/j.bmc.2016.08.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 07/28/2016] [Accepted: 08/18/2016] [Indexed: 10/21/2022]
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8
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Ohta K, Chiba Y, Kaise A, Endo Y. Structure-activity relationship study of diphenylamine-based estrogen receptor (ER) antagonists. Bioorg Med Chem 2015; 23:861-7. [PMID: 25614118 DOI: 10.1016/j.bmc.2014.12.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2014] [Revised: 12/10/2014] [Accepted: 12/11/2014] [Indexed: 12/31/2022]
Abstract
We have reported the design and synthesis of novel estrogen receptor (ER) agonists with a diphenylamine skeleton, which has several advantages over the formerly used diphenylmethane skeleton for drug development. Here, we confirmed the versatility of the diphenylamine skeleton by designing and synthesizing ER antagonist candidates bearing a basic alkylamino side chain on one of the two phenol groups of the diphenylamine agonist core structure. Among the tested compounds, cyclic alkylamine-containing derivatives showed more potent ER-antagonistic activity than the corresponding acyclic derivatives in cell proliferation assay using the MCF-7 cell line. Compound 5e showed the most potent antiestrogenic activity (IC50: 1.3×10(-7)M), being 10times more potent than tamoxifen.
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Affiliation(s)
- Kiminori Ohta
- Faculty of Pharmaceutical Sciences, Tohoku Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan
| | - Yuki Chiba
- Faculty of Pharmaceutical Sciences, Tohoku Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan
| | - Asako Kaise
- Faculty of Pharmaceutical Sciences, Tohoku Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan
| | - Yasuyuki Endo
- Faculty of Pharmaceutical Sciences, Tohoku Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan.
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9
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Modulation of human neutrophil activity by adenosine modified with a carborane pharmacophore. Bioorg Med Chem Lett 2014; 24:3073-8. [DOI: 10.1016/j.bmcl.2014.05.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 04/30/2014] [Accepted: 05/05/2014] [Indexed: 12/20/2022]
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10
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Ohta K, Ogawa T, Kaise A, Endo Y. Novel estrogen receptor (ER) modulators containing various hydrophobic bent-core structures. Bioorg Med Chem 2014; 22:3508-14. [DOI: 10.1016/j.bmc.2014.04.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 04/11/2014] [Accepted: 04/12/2014] [Indexed: 10/25/2022]
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11
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Ohta K, Kawachi E, Shudo K, Kagechika H. Structure-activity relationship study on benzoic acid part of diphenylamine-based retinoids. Bioorg Med Chem Lett 2013; 23:81-4. [PMID: 23217961 DOI: 10.1016/j.bmcl.2012.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Revised: 11/01/2012] [Accepted: 11/06/2012] [Indexed: 10/27/2022]
Abstract
Based on structure-activity relationship studies of the benzoic acid part of diphenylamine-based retinoids, the potent RXR agonist 4 was derivatized to obtain retinoid agonists, synergists, and an antagonist. Cinnamic acid derivatives 5 and phenylpropionic acid derivatives 6 showed retinoid agonistic and synergistic activities, respectively. The difference of the activities is considered to be due to differences in the flexibility of the carboxylic acid-containing substituent on the diphenylamine skeleton. Compound 7, bearing a methyl group at the meta position to the carboxyl group, was an antagonist, dose-dependently inhibiting HL-60 cell differentiation induced by 3.3 × 10(-10)M Am80.
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Affiliation(s)
- Kiminori Ohta
- Faculty of Pharmaceutical Sciences, Tohoku Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan
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12
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Macchiarulo A, Carotti A, Cellanetti M, Sardella R, Gioiello A. Navigations of chemical space to further the understanding of polypharmacology in human nuclear receptors. MEDCHEMCOMM 2013. [DOI: 10.1039/c2md20157g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The article analyses properties featuring the binding site of human nuclear receptors and cognate ligands, investigating aspects of polypharmacology.
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Affiliation(s)
- Antonio Macchiarulo
- Dipartimento di Chimica e Tecnologia del Farmaco
- Università di Perugia
- 06123 Perugia
- Italy
| | - Andrea Carotti
- Dipartimento di Chimica e Tecnologia del Farmaco
- Università di Perugia
- 06123 Perugia
- Italy
| | - Marco Cellanetti
- Dipartimento di Chimica e Tecnologia del Farmaco
- Università di Perugia
- 06123 Perugia
- Italy
| | - Roccaldo Sardella
- Dipartimento di Chimica e Tecnologia del Farmaco
- Università di Perugia
- 06123 Perugia
- Italy
| | - Antimo Gioiello
- Dipartimento di Chimica e Tecnologia del Farmaco
- Università di Perugia
- 06123 Perugia
- Italy
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13
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Scholz M, Hey-Hawkins E. Carbaboranes as pharmacophores: properties, synthesis, and application strategies. Chem Rev 2011; 111:7035-62. [PMID: 21780840 DOI: 10.1021/cr200038x] [Citation(s) in RCA: 582] [Impact Index Per Article: 44.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Matthias Scholz
- Institut für Anorganische Chemie der Universität Leipzig, Germany
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14
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Issa F, Kassiou M, Rendina LM. Boron in drug discovery: carboranes as unique pharmacophores in biologically active compounds. Chem Rev 2011; 111:5701-22. [PMID: 21718011 DOI: 10.1021/cr2000866] [Citation(s) in RCA: 521] [Impact Index Per Article: 40.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fatiah Issa
- School of Chemistry, The University of Sydney, Sydney NSW 2006, Australia
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15
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Scholz M, Blobaum AL, Marnett LJ, Hey-Hawkins E. Synthesis and evaluation of carbaborane derivatives of indomethacin as cyclooxygenase inhibitors. Bioorg Med Chem 2011; 19:3242-8. [PMID: 21524587 DOI: 10.1016/j.bmc.2011.03.054] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 03/17/2011] [Accepted: 03/22/2011] [Indexed: 01/15/2023]
Abstract
Nonsteroidal anti-inflammatory drugs (NSAIDs) exert their pharmacological activities by inhibiting cyclooxygenase (COX)-1 and COX-2. Previous studies have shown that esters and amides of non-selective inhibitors such as indomethacin are selective against COX-2, which is the therapeutically relevant isoform. Structure-activity analysis indicates that substituted phenyl rings are tolerated as ester components. In the present study, the introduction of inorganic ortho- and meta-carbaborane moieties was explored with the aim to create COX-2 inhibitors and more importantly to investigate the validity of using these boron clusters as drug entities. Interestingly, only the ortho-carbaborane ester was active whereas the meta isomer was not. A similar lack of inhibitory potency was observed when an adamantyl substituent or alkylene spacers at the carbaborane were introduced in the ester functionality.
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Affiliation(s)
- Matthias Scholz
- Institut für Anorganische Chemie der Universität Leipzig, Germany
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16
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Endo Y, Ohta K, Yoshimi T, Yamaguchi K. A NEW APPLICATION OF INORGANIC CLUSTER, CARBORANES FOR MEDICINAL DRUG DESIGN AND MOLECULAR CONSTRUCTION. PHOSPHORUS SULFUR 2010. [DOI: 10.1080/10426500490427097] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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17
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Novel estrogen receptor (ER) modulators: Carbamate and thiocarbamate derivatives with m-carborane bisphenol structure. Bioorg Med Chem 2009; 17:7958-63. [DOI: 10.1016/j.bmc.2009.10.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2009] [Revised: 10/07/2009] [Accepted: 10/08/2009] [Indexed: 01/22/2023]
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18
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Sivaev IB, Bregadze VV. Polyhedral Boranes for Medical Applications: Current Status and Perspectives. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900003] [Citation(s) in RCA: 287] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Igor B. Sivaev
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., Moscow 119991, Russia, Fax: +7‐499‐1355085
| | - Vladimir V. Bregadze
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., Moscow 119991, Russia, Fax: +7‐499‐1355085
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19
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Ogawa T, Ohta K, Iijima T, Suzuki T, Ohta S, Endo Y. Synthesis and biological evaluation of p-carborane bisphenols and their derivatives: Structure–activity relationship for estrogenic activity. Bioorg Med Chem 2009; 17:1109-17. [DOI: 10.1016/j.bmc.2008.12.044] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2008] [Revised: 12/16/2008] [Accepted: 12/17/2008] [Indexed: 01/15/2023]
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20
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Acidic heterocycles as novel hydrophilic pharmacophore of androgen receptor ligands with a carborane core structure. Bioorg Med Chem 2009; 17:344-50. [DOI: 10.1016/j.bmc.2008.10.060] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2008] [Revised: 10/27/2008] [Accepted: 10/27/2008] [Indexed: 01/03/2023]
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21
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Ohta K, Chiba Y, Ogawa T, Endo Y. Promising core structure for nuclear receptor ligands: Design and synthesis of novel estrogen receptor ligands based on diphenylamine skeleton. Bioorg Med Chem Lett 2008; 18:5050-3. [DOI: 10.1016/j.bmcl.2008.08.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2008] [Revised: 07/29/2008] [Accepted: 08/01/2008] [Indexed: 02/07/2023]
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22
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Ohta K, Goto T, Fijii S, Suzuki T, Ohta S, Endo Y. Design and synthesis of carborane-containing androgen receptor (AR) antagonist bearing a pyridine ring. Bioorg Med Chem 2008; 16:8022-8. [DOI: 10.1016/j.bmc.2008.07.055] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2008] [Revised: 07/19/2008] [Accepted: 07/22/2008] [Indexed: 11/17/2022]
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23
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Goto T, Ohta K, Suzuki T, Ohta S, Endo Y. Design and synthesis of novel androgen receptor antagonists with sterically bulky icosahedral carboranes. Bioorg Med Chem 2005; 13:6414-24. [PMID: 16099660 DOI: 10.1016/j.bmc.2005.06.061] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2005] [Revised: 06/28/2005] [Accepted: 06/29/2005] [Indexed: 10/25/2022]
Abstract
Carboranes (dicarba-closo-dodecaboranes) are a class of carbon-containing polyhedral boron-cluster compounds having remarkable chemical and thermal stability, and hydrophobic character. These features may allow application of carboranes as a new hydrophobic core structure in biologically active molecules that interact hydrophobically with receptors. Here, we report the design and synthesis of novel androgen antagonists bearing a carborane moiety. These compounds, particularly 8a, 8c, and 9d, exhibited anti-androgenic activity similar to that of the well-known anti-androgen flutamide in reporter gene assay using NIH3T3 cells transfected with a human AR expression plasmid. The carborane cage seems to be a privileged hydrophobic pharmacophore for the expression of AR-antagonistic activity.
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Affiliation(s)
- Tokuhito Goto
- Faculty of Pharmaceutical Sciences, Tohoku Pharmaceutical University, Aoba-ku, Sendai, Japan
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24
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Endo Y, Songkram C, Ohta K, Yamaguchi K. Synthesis of distorted molecules based on spatial control with icosahedral carboranes. J Organomet Chem 2005. [DOI: 10.1016/j.jorganchem.2005.01.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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25
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Ohta K, Iijima T, Kawachi E, Kagechika H, Endo Y. Novel retinoid X receptor (RXR) antagonists having a dicarba-closo-dodecaborane as a hydrophobic moiety. Bioorg Med Chem Lett 2005; 14:5913-8. [PMID: 15501068 DOI: 10.1016/j.bmcl.2004.09.035] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2004] [Accepted: 09/07/2004] [Indexed: 12/30/2022]
Abstract
We designed and synthesized novel retinoid X receptor (RXR)-selective antagonists bearing a carborane moiety. Compounds 8a-d or 9a-d themselves have no differentiation-inducing activity toward HL-60 cells and no inhibitory activity towards a retinoic acid receptor (RAR) agonist. However, they inhibit the synergistic activity of an RXR agonist, PA024, in the presence of Am80 on the cell differentiation of HL-60. Transactivation assay using RARs and RXRs suggested that the inhibitory activity of 9b resulted from the selective antagonism at the RXR site of RXR-RAR heterodimers.
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Affiliation(s)
- Kiminori Ohta
- Faculty of Pharmaceutical Sciences, Tohoku Pharmaceutical University, 4-4-1, Komatsushima, Aoba-ku, Sendai 981-8558, Japan
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26
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Fujii S, Hashimoto Y, Suzuki T, Ohta S, Endo Y. A new class of androgen receptor antagonists bearing carborane in place of a steroidal skeleton. Bioorg Med Chem Lett 2005; 15:227-30. [PMID: 15582444 DOI: 10.1016/j.bmcl.2004.09.091] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2004] [Accepted: 09/28/2004] [Indexed: 10/26/2022]
Abstract
A new class of androgen receptor antagonists containing dicarba-closo-dodecaborane (carborane) as a hydrophobic skeletal structure is described. The designed molecules bear the characteristic polar components of endogenous agonists, but have a hydrophobic carborane cage instead of the steroidal skeleton. These compounds bind to androgen receptor and show anti-androgenic activity towards androgen-dependent SC-3 cells with almost the same potency as the known anti-androgen hydroxyflutamide.
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Affiliation(s)
- Shinya Fujii
- Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki 769-2193, Japan
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27
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Endo Y, Yamamoto K, Kagechika H. Utility of boron clusters for drug design. Relation between estrogen receptor binding affinity and hydrophobicity of phenols bearing various types of carboranyl groups. Bioorg Med Chem Lett 2003; 13:4089-92. [PMID: 14592514 DOI: 10.1016/j.bmcl.2003.08.039] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
High binding affinity for estrogen receptor and the appearance of estrogenic activity require a phenolic ring and an appropriate hydrophobic group adjacent to the phenolic ring. A quantitative structure-activity relationship analysis based on the values of logP and the pK(a) of the phenolic group showed that the hydrophobicity of these compounds is highly correlated to the estrogen receptor alpha (ERalpha)-binding affinity. These results should be useful for application of these spherical boron clusters (dicarba-closo-dodecaboranes; carboranes) as hydrophobic pharmacophores in drug design, as well as for microscopic analysis of ER-ligand interactions.
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Affiliation(s)
- Yasuyuki Endo
- Faculty of Pharmaceutical Sciences, Tohoku Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan.
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28
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Valliant JF, Guenther KJ, King AS, Morel P, Schaffer P, Sogbein OO, Stephenson KA. The medicinal chemistry of carboranes. Coord Chem Rev 2002. [DOI: 10.1016/s0010-8545(02)00087-5] [Citation(s) in RCA: 528] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Endo Y, Songkram C, Yamasaki R, Tanatani A, Kagechika H, Takaishi K, Yamaguchi K. Molecular construction based on icosahedral carboranes and aromatic N,N′-dimethylurea groups. Aromatic layered molecules and a transition metal complex. J Organomet Chem 2002. [DOI: 10.1016/s0022-328x(02)01322-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Jemmis ED, Ramalingam M, Jayasree EG. CationicClosoCarboranes-Promising Weakly Coordinating Ions. J Comput Chem 2001. [DOI: 10.1002/jcc.1107] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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31
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Yamamoto K, Endo Y. Utility of boron clusters for drug design. Hansch-fujita hydrophobic parameters pi of dicarba-closo-dodecaboranyl groups. Bioorg Med Chem Lett 2001; 11:2389-92. [PMID: 11527738 DOI: 10.1016/s0960-894x(01)00438-3] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The spherical boron clusters, dicarba-closo-dodecaboranes (carboranes) are new hydrophobic pharmacophores, which interact hydrophobically with receptors. We have experimentally measured the partition coefficients log P for carboranylphenols employing an HPLC method, and determined the Hansch-Fujita hydrophobic parameters pi of various carboranyl groups. The values (pi=2.69-4.44) vary depending on the position of substitution on the carborane cage and the isomeric form (o-, m-, p-carboranes). These values lie within the range of those of hydrocarbons.
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Affiliation(s)
- K Yamamoto
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Songkram C, Takaishi K, Yamaguchi K, Kagechika H, Endo Y. Structures of bis- and tris(2-phenyl-o-carboran-1-yl)benzenes. Construction of three-dimensional structures converted from planar arylacetylenic arrays. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(01)01283-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Songkram C, Yamasaki R, Tanatani A, Takaishi K, Yamaguchi K, Kagechika H, Endo Y. Molecular construction based on icosahedral carboranes and aromatic urea groups. A new type of carboracycle. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(01)01138-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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34
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Sou S, Takahashi H, Yamasaki R, Kagechika H, Endo Y, Hashimoto Y. Alpha-glucosidase inhibitors with a 4,5,6,7-tetrachlorophthalimide skeleton pendanted with a cycloalkyl or dicarba-closo-dodecaborane group. Chem Pharm Bull (Tokyo) 2001; 49:791-3. [PMID: 11411542 DOI: 10.1248/cpb.49.791] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Previous studies of alpha-glucosidase inhibitors derived from thalidomide revealed that 4,5,6,7-tetrachloro-N-alkylphthalimide derivatives are superior lead compounds. Structure-activity relationship studies indicated that a hydrophobic group at the N(2) position is mandatory for potent activity. Accordingly, we have designed and synthesized some 4,5,6,7-tetrachloro-N-cycloalkylphthalimide and 4,5,6,7-tetrachloro-N-dicarba-closo-dodecaborane derivatives. The prepared compounds exhibited potent alpha-glucosidase-inhibitory activity. Among them, 4,5,6,7-tetrachloro-N-cycloheptylphthalimide (9) showed the most potent activity, being approximately 30 times more active than the classical inhibitor, 1-deoxynojirimycin (1).
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Affiliation(s)
- S Sou
- Institute of Molecular and Cellular Biosciences, University of Tokyo, Japan
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Endo Y, Iijima T, Yaguchi K, Kawachi E, Inoue N, Kagechika H, Kubo A, Itai A. Structure-Activity study of retinoid agonists bearing substituted dicarba-closo-dodecaborane. Relation between retinoidal activity and conformation of two aromatic nuclei. Bioorg Med Chem Lett 2001; 11:1307-11. [PMID: 11392543 DOI: 10.1016/s0960-894x(01)00204-9] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
We have investigated the structure activity relationships of the potent retinoid agonist, 4-[4-(2-propyl-1,2-dicarba-closo-dodecaboran-l-yl)phenylamino]benzoic acid (BR403), which we have previously reported. Substitution of a methyl group on the aromatic nucleus or a methyl group on the nitrogen atom, or replacement of the amino group with ether, methylene, carboxyl or 1,1-ethylene greatly decreased the activity. The relatively planar conformation at the phenyl-N-phenyl moiety seems to play a critical role in the appearance of the biological activity.
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Affiliation(s)
- Y Endo
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Japan.
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Endo Y, Iijima T, Yamakoshi Y, Fukasawa H, Miyaura C, Inada M, Kubo A, Itai A. Potent estrogen agonists based on carborane as a hydrophobic skeletal structure. A new medicinal application of boron clusters. CHEMISTRY & BIOLOGY 2001; 8:341-55. [PMID: 11325590 DOI: 10.1016/s1074-5521(01)00016-3] [Citation(s) in RCA: 162] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
BACKGROUND Carboranes (dicarba-closo-dodecaboranes) are a class of carbon-containing polyhedral boron-cluster compounds having remarkable thermal stability and exceptional hydrophobicity. Applications of the unique structural and chemical properties offered by icosahedral carboranes in boron neutron capture therapy have received increasing attention over the past 30 years. However, these features of carboranes may allow another application as a hydrophobic pharmacophore in biologically active molecules that interact hydrophobically with receptors. RESULTS We have designed candidate estrogen-receptor-binding compounds having carborane as a hydrophobic skeletal structure and synthesized them. The most potent compound bearing a carborane cage exhibited activity at least 10-fold greater than that of 17beta-estradiol in the luciferase reporter gene assay. Estrogen receptor-alpha-binding data for the compound were consistent with the results of the luciferase reporter gene assay. The compound also showed potent in vivo effects on the recovery of uterine weight and bone loss in ovariectomized mice. CONCLUSION Further development of the potent carborane-containing estrogenic agonists described here, having a new skeletal structure and unique characteristics, should yield novel therapeutic agents, especially selective estrogen receptor modulators. Furthermore, the suitability of the spherical carborane cage for binding to the cavity of the estrogen receptor-alpha ligand-binding domain should provide a basis for a similar approach to developing novel ligands for other steroid receptors.
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Affiliation(s)
- Y Endo
- Graduate School of Phamaceutical Sciences, University of Tokyo, Japan.
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37
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Tjarks W. The use of boron clusters in the rational design of boronated nucleosides for neutron capture therapy of cancer. J Organomet Chem 2000. [DOI: 10.1016/s0022-328x(00)00574-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Endo Y, Yaguchi K, Kawachi E, Kagechika H. Polymethylcarborane as a novel bioactive moiety: derivatives with potent retinoid antagonistic activity. Bioorg Med Chem Lett 2000; 10:1733-6. [PMID: 10937735 DOI: 10.1016/s0960-894x(00)00327-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
4[(Deca-B-methyl-1,12-dicarba-closo-dodecaboran-1-yl)c arbamoyl]benzoic acid and its congeners showed potent antagonistic activity at concentrations of 10(-7)-10(-8) M on the differentiation-inducing action of retinoids towards human promyelocytic leukemia HL-60 cells. This is the first example of derivatives of polymethylcarborane, which resembles C60 in size, with biological activity.
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Affiliation(s)
- Y Endo
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Japan.
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Endo Y, Yoshimi T, Iijima T, Yamakoshi Y. Estrogenic antagonists bearing dicarba-closo-dodecaborane as a hydrophobic pharmacophore. Bioorg Med Chem Lett 1999; 9:3387-92. [PMID: 10617077 DOI: 10.1016/s0960-894x(99)00579-x] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Dicarba-closo-dodecaboranes (carboranes), which have spherical geometry and hydrophobicity, are applicable as a hydrophobic pharmacophore of biologically active molecules. We have designed and synthesized estrogenic antagonists based on the structure of the potent agonist 1-hydroxymethyl-12-(4-hydroxyphenyl)-1,12-dicarba-closo-d odecaborane, which we have developed. The compounds showed potent antagonistic activity in luciferase reporter gene assay using COS-1 cells transfected with rat ER alpha-expression plasmid and an appropriate reporter plasmid.
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Affiliation(s)
- Y Endo
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Japan
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Endo Y, Iijima T, Amakoshi Y, Kubo A, Itai A. Structure-activity study of estrogenic agonists bearing dicarba-closo-dodecaborane. Effect of geometry and separation distance of hydroxyl groups at the ends of molecules. Bioorg Med Chem Lett 1999; 9:3313-8. [PMID: 10612591 DOI: 10.1016/s0960-894x(99)00596-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Dicarba-closo-dodecaboranes (carboranes), which have spherical geometry and hydrophobicity, are applicable as a hydrophobic pharmacophore of biologically active molecules. We have investigated structure-activity relations based on the structure of the potent estrogenic agonist, 1-hydroxymethyl-12-(4-hydroxyphenyl)-1,12-dicarba-closo-d odecaborane, which we have previously reported. The geometry and separation distance of the phenolic and alcoholic hydroxyl groups play a critical role in the appearance of biological activity.
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Affiliation(s)
- Y Endo
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Japan
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41
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Endo Y, Taoda Y. Electronic effects of icosahedral carboranes. Friedel-Crafts acylation of 1-phenyl-1,2-, 1,7-, and 1,12-dicarba-closo-dodecaboranes. Tetrahedron Lett 1999. [DOI: 10.1016/s0040-4039(99)01911-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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42
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Yaguchi K, Endo Y. Steric effects of polymethylcarboranes. Unusual reactivity of N-(deca-B-methyl-1,12-dicarba-closo-dodecaborane-1-carbonyl)pyridinium. Tetrahedron Lett 1999. [DOI: 10.1016/s0040-4039(99)01508-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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43
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Endo Y, Yoshimi T, Kimura K, Itai A. Protein kinase C modulators bearing dicarba-CLOSO-dodecaborane as a hydrophobic pharmacophore. Bioorg Med Chem Lett 1999; 9:2561-4. [PMID: 10498208 DOI: 10.1016/s0960-894x(99)00436-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The size and position of a hydrophobic moiety on a benzolactam skeleton, which reproduces the active conformation and biological activity of teleocidins, play an important role in the appearance of the activity. We have designed and synthesized benzolactams bearing dicarba-closo-dodecaborane. These compounds showed potent binding affinity to protein kinase C, providing a further example of the application of carborane as the hydrophobic pharmacophore of biologically active molecules.
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Affiliation(s)
- Y Endo
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Japan
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