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Cao HJ, Wei X, Sun F, Zhang X, Lu C, Yan H. Metal-catalyzed B-H acylmethylation of pyridylcarboranes: access to carborane-fused indoliziniums and quinoliziniums. Chem Sci 2021; 12:15563-15571. [PMID: 35003585 PMCID: PMC8654026 DOI: 10.1039/d1sc05296a] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 11/19/2021] [Indexed: 12/11/2022] Open
Abstract
Metal-catalyzed mono-acylmethylation of pyridylcarboranes has been realized using α-carbonyl sulfoxonium ylides as a coupling partner. The reaction features high efficiency, excellent site-selectivity and good functional group tolerance. In the presence of pyridyl and enolizable acylmethyl groups, a post-coordination mode has been proposed and validated by in situ high resolution mass spectroscopy (HRMS) to rationalize the unique mono-substitution. Post-functionalization at the newly incorporated alkyl site provides additional utility of this method, including the construction of carborane-fused indoliziniums and quinoliziniums. We believe that these mono-alkylated carboranes, together with their post-functionalized derivatives, may find applications in luminescent materials and drug discovery in the near future.
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Affiliation(s)
- Hou-Ji Cao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Xing Wei
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Fangxiang Sun
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Xiaolei Zhang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Changsheng Lu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Hong Yan
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing Jiangsu 210023 P. R. China
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Kroth H, Sreenivasachary N, Hamel A, Benderitter P, Varisco Y, Giriens V, Paganetti P, Froestl W, Pfeifer A, Muhs A. Synthesis and structure–activity relationship of 2,6-disubstituted pyridine derivatives as inhibitors of β-amyloid-42 aggregation. Bioorg Med Chem Lett 2016; 26:3330-3335. [DOI: 10.1016/j.bmcl.2016.05.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 05/10/2016] [Accepted: 05/12/2016] [Indexed: 12/19/2022]
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Takasu K. π-Delocalized Lipophilic Cations as New Candidates for Antimalarial, Antitrypanosomal and Antileishmanial Agents: Synthesis, Evaluation of Antiprotozoal Potency, and Insight into Their Action Mechanisms. Chem Pharm Bull (Tokyo) 2016; 64:656-67. [DOI: 10.1248/cpb.c16-00234] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Kiyosei Takasu
- Graduate School of Pharmaceutical Sciences, Kyoto University
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Shi XL, Ge JF, Liu BQ, Kaiser M, Wittlin S, Brun R, Ihara M. Synthesis and in vitro antiprotozoal activities of 5-phenyliminobenzo[a]phenoxazine derivatives. Bioorg Med Chem Lett 2011; 21:5804-7. [PMID: 21868222 DOI: 10.1016/j.bmcl.2011.07.112] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Revised: 07/27/2011] [Accepted: 07/29/2011] [Indexed: 11/28/2022]
Abstract
A series of 5-phenyliminobenzo[a]phenoxazine derivatives were synthesized. The in vitro antiprotozoal activities were evaluated against Plasmodium falciparum K1, Trypanosoma cruzi, Leishmania donovani and Trypanosoma brucei rhodesiense. N,N-Diethyl-5-((4-methoxyphenyl)imino)-5H-benzo[a]phenoxazin-9-amine shows IC(50)=0.040 μmol L(-1) with a selective index of 1425 against Plasmodium falciparum K1.
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Affiliation(s)
- Xue-Liang Shi
- Key Laboratory of Organic Synthesis of Jiangsu Province, Soochow University, 199 Ren'Ai Road, Suzhou 215123, China
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Morisaki D, Kim HS, Inoue H, Terauchi H, Kuge S, Naganuma A, Wataya Y, Tokuyama H, Ihara M, Takasu K. Selective accumulation of rhodacyanine in plasmodial mitochondria is related to the growth inhibition of malaria parasites. Chem Sci 2010. [DOI: 10.1039/c0sc00125b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Yang M, Arai C, Bakar Md. A, Lu J, Ge JF, Pudhom K, Takasu K, Kasai K, Kaiser M, Brun R, Yardley V, Itoh I, Ihara M. Fluorinated Rhodacyanine (SJL-01) Possessing High Efficacy for Visceral Leishmaniasis (VL). J Med Chem 2009; 53:368-73. [DOI: 10.1021/jm9013086] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Mei Yang
- Drug Discovery Science Research Center, Hoshi University, 2-4-41 Ebara, Shinagawa, Tokyo 142-8501, Japan
| | - Chika Arai
- Drug Discovery Science Research Center, Hoshi University, 2-4-41 Ebara, Shinagawa, Tokyo 142-8501, Japan
| | - Abu Bakar Md.
- Drug Discovery Science Research Center, Hoshi University, 2-4-41 Ebara, Shinagawa, Tokyo 142-8501, Japan
| | - Jun Lu
- Drug Discovery Science Research Center, Hoshi University, 2-4-41 Ebara, Shinagawa, Tokyo 142-8501, Japan
| | - Jian-Feng Ge
- Drug Discovery Science Research Center, Hoshi University, 2-4-41 Ebara, Shinagawa, Tokyo 142-8501, Japan
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215006, China
| | - Khanitha Pudhom
- Drug Discovery Science Research Center, Hoshi University, 2-4-41 Ebara, Shinagawa, Tokyo 142-8501, Japan
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Kiyosei Takasu
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama, Sendai 980-8578, Japan
| | - Kazuki Kasai
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama, Sendai 980-8578, Japan
| | - Marcel Kaiser
- Swiss Tropical Institute, Socinstrasse 57, CH-4002 Basel, Switzerland
| | - Reto Brun
- Swiss Tropical Institute, Socinstrasse 57, CH-4002 Basel, Switzerland
| | - Vanessa Yardley
- Department of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, Keppel Street, London WC1E 7HT, U.K
| | - Isamu Itoh
- Synstar Japan Co., Ltd., Tokyo Tech Yokohama Venture Plaza W401, 4259-3 Nagatsuta-cho, Midori-ku, Yokohama, 226-8510, Japan
| | - Masataka Ihara
- Drug Discovery Science Research Center, Hoshi University, 2-4-41 Ebara, Shinagawa, Tokyo 142-8501, Japan
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Ihara M, Pudhom K, Ge JF, Arai C, Kaiser M, Wittlin S, Brun R, Itoh I, Yang M. Synthesis and Biological Properties of a Rhodacyanine Derivatives, SSJ-127, Having High Efficacy against Malaria Protozoa. HETEROCYCLES 2009. [DOI: 10.3987/com-08-s(f)35] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Pudhom K, Kasai K, Terauchi H, Inoue H, Kaiser M, Brun R, Ihara M, Takasu K. Synthesis of three classes of rhodacyanine dyes and evaluation of their in vitro and in vivo antimalarial activity. Bioorg Med Chem 2006; 14:8550-63. [PMID: 16971131 DOI: 10.1016/j.bmc.2006.08.035] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2006] [Revised: 08/21/2006] [Accepted: 08/22/2006] [Indexed: 10/24/2022]
Abstract
Selected members of three classes of rhodacyanine dyes, [0,0]-, [1,0]-, and [0,0,0]-rhodacyanines, were synthesized and their in vitro antimalarial activities against Plasmodium falciparum K1 (chloroquine-resistant strain) as well as their in vivo activities against P. berghei in mice were determined. The novel [0,0,0]-rhodacynines, 3e and 3h, possessing a benzothiazole moiety, were shown to have highly promising antimalarial activities in vivo. Moreover, the [0,0,0]-rhodacyanines were found to be orally bioavailable.
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Affiliation(s)
- Khanitha Pudhom
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama, Sendai 980-8578, Japan
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Takasu K, Pudhom K, Kaiser M, Brun R, Ihara M. Synthesis and Antimalarial Efficacy of Aza-Fused Rhodacyanines in Vitro and in the P. berghei Mouse Model. J Med Chem 2006; 49:4795-8. [PMID: 16854088 DOI: 10.1021/jm0606241] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Several aza-fused rhodacyanines were synthesized and assessed for their in vitro and in vivo antimalarial activities against Plasmodium falciparum K1 and P. berghei. All synthetic compounds showed strong selective antimalarial in vitro activity. Class II azarhodacyanines, 3, consisting of four heterocyclic units, were found to display good parasitemia suppression and low acute toxicity in vivo. Among them, 3c appeared to be the most effective at a dose of 20-25 mg kg(-1) day(-1) (ip).
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Affiliation(s)
- Kiyosei Takasu
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama, Sendai 980-8578, Japan.
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