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Kusano S, Nishikata T. Controlling Cyclic Dienamine Reactivity in Radical tert-Alkylation for Molecular Diversity to Synthesize Multicyclic Compounds Possessing a Quaternary Carbon. Chemistry 2024; 30:e202304215. [PMID: 38234196 DOI: 10.1002/chem.202304215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/12/2024] [Accepted: 01/15/2024] [Indexed: 01/19/2024]
Abstract
Synthesis of diverse sterically congested molecules from a single important intermediate is one of the ideal synthetic strategies in organic synthesis. In this paper, we found that γ-oxoalkyl substituted cyclohexenone derivatives (OAC) possessing a quaternary carbon are a useful key intermediate to derive both congested fused [5,6] rings and spirocycles. For this purpose, we have established an efficient synthetic method to obtain OAC by tertiary alkylation of β-methylcyclohexenone derivatives using α-bromocarbonyl compounds as a tertiary alkyl source. The key to the success of this reaction is controlling the reactivity of the dienamine intermediate. While there have been many reports on enamine reactions, dienamine reactions have not been well studied. Herein, we report controlling reactivity of dienamines and molecular diversification from OAC.
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Affiliation(s)
- Shinjiro Kusano
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
| | - Takashi Nishikata
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
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2
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Oguri H. Synthesis and Structural Diversification of Artemisinins towards the Generation of Potent Anti-malarial Agents. CHEM LETT 2021. [DOI: 10.1246/cl.200920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Hiroki Oguri
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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3
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Bonepally KR, Takahashi N, Matsuoka N, Koi H, Mizoguchi H, Hiruma T, Ochiai K, Suzuki S, Yamagishi Y, Oikawa H, Ishiyama A, Hokari R, Iwatsuki M, Otoguro K, O Mura S, Kato N, Oguri H. Rapid and Systematic Exploration of Chemical Space Relevant to Artemisinins: Anti-malarial Activities of Skeletally Diversified Tetracyclic Peroxides and 6-Aza-artemisinins. J Org Chem 2020; 85:9694-9712. [PMID: 32610901 DOI: 10.1021/acs.joc.0c01017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
To achieve both structural changes and rapid synthesis of the tetracyclic scaffold relevant to artemisinins, we explored two kinds of de novo synthetic approaches that generate both skeletally diversified tetracyclic peroxides and 6-aza-artemisinins. The anti-malarial activities of the tetracyclic peroxides with distinct skeletal arrays, however, were moderate and far inferior to artemisinins. Given the privileged scaffold of artemisinins, we next envisioned element implantation at the C6 position with a nitrogen without the trimmings of substituents and functional groups. This molecular design allowed the deep-seated structural modification of the hitherto unexplored cyclohexane moiety (C-ring) while keeping the three-dimensional structure of artemisinins. Notably, this approach induced dramatic changes of retrosynthetic transforms that allow an expeditious catalytic asymmetric synthesis with generation of substitutional variations at three sites (N6, C9, and C3) of the 6-aza-artemisinins. These de novo synthetic approaches led to the lead discovery with substantial intensification of the in vivo activities, which undermine the prevailing notion that the C-ring of artemisinins appears to be merely a structural unit but to be a functional area as the anti-malarial pharmacophore. Furthermore, we unexpectedly found that racemic 6-aza-artemisinin (33) exerted exceedingly potent in vivo efficacies superior to the chiral one and the first-line drug, artesunate.
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Affiliation(s)
- Karunakar Reddy Bonepally
- Division of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Norihito Takahashi
- Division of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Naoya Matsuoka
- Division of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Hikari Koi
- Division of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Haruki Mizoguchi
- Division of Chemistry, Graduate School of Science, Hokkaido University, North 10 West 8, Kitaku, Sapporo 060-0810, Japan
| | - Takahisa Hiruma
- Division of Chemistry, Graduate School of Science, Hokkaido University, North 10 West 8, Kitaku, Sapporo 060-0810, Japan
| | - Kyohei Ochiai
- Division of Chemistry, Graduate School of Science, Hokkaido University, North 10 West 8, Kitaku, Sapporo 060-0810, Japan
| | - Shun Suzuki
- Division of Chemistry, Graduate School of Science, Hokkaido University, North 10 West 8, Kitaku, Sapporo 060-0810, Japan
| | - Yutaka Yamagishi
- Division of Chemistry, Graduate School of Science, Hokkaido University, North 10 West 8, Kitaku, Sapporo 060-0810, Japan
| | - Hideaki Oikawa
- Division of Chemistry, Graduate School of Science, Hokkaido University, North 10 West 8, Kitaku, Sapporo 060-0810, Japan
| | - Aki Ishiyama
- Research Center for Tropical Diseases, O̅mura Satoshi Memorial Institute, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Rei Hokari
- Research Center for Tropical Diseases, O̅mura Satoshi Memorial Institute, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Masato Iwatsuki
- Research Center for Tropical Diseases, O̅mura Satoshi Memorial Institute, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Kazuhiko Otoguro
- Research Center for Tropical Diseases, O̅mura Satoshi Memorial Institute, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Satoshi O Mura
- Research Center for Tropical Diseases, O̅mura Satoshi Memorial Institute, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Nobutaka Kato
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, Massachusetts 02142, United States
| | - Hiroki Oguri
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Dragutan V, Dragutan I, Demonceau A, Delaude L. Combining enyne metathesis with long-established organic transformations: a powerful strategy for the sustainable synthesis of bioactive molecules. Beilstein J Org Chem 2020; 16:738-755. [PMID: 32362948 PMCID: PMC7176922 DOI: 10.3762/bjoc.16.68] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 04/01/2020] [Indexed: 12/20/2022] Open
Abstract
This account surveys the current progress on the application of intra- and intermolecular enyne metathesis as main key steps in the synthesis of challenging structural motifs and stereochemistries found in bioactive compounds. Special emphasis is placed on ruthenium catalysts as promoters of enyne metathesis to build the desired 1,3-dienic units. The advantageous association of this approach with name reactions like Grignard, Wittig, Diels–Alder, Suzuki–Miyaura, Heck cross-coupling, etc. is illustrated. Examples unveil the generality of such tandem reactions in providing not only the intricate structures of known, in vivo effective substances but also for designing chemically modified analogs as valid alternatives for further therapeutic agents.
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Affiliation(s)
- Valerian Dragutan
- Institute of Organic Chemistry of the Romanian Academy, Bucharest, 060023, Romania
| | - Ileana Dragutan
- Institute of Organic Chemistry of the Romanian Academy, Bucharest, 060023, Romania
| | - Albert Demonceau
- Laboratory of Catalysis, Institut de Chimie (B6a), Allée du six Août 13, Université de Liège, 4000 Liège, Belgium
| | - Lionel Delaude
- Laboratory of Catalysis, Institut de Chimie (B6a), Allée du six Août 13, Université de Liège, 4000 Liège, Belgium
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Bartolo ND, Read JA, Valentín EM, Woerpel KA. Reactions of Allylmagnesium Reagents with Carbonyl Compounds and Compounds with C═N Double Bonds: Their Diastereoselectivities Generally Cannot Be Analyzed Using the Felkin-Anh and Chelation-Control Models. Chem Rev 2020; 120:1513-1619. [PMID: 31904936 PMCID: PMC7018623 DOI: 10.1021/acs.chemrev.9b00414] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
This review describes the additions of allylmagnesium reagents to carbonyl compounds and to imines, focusing on the differences in reactivity between allylmagnesium halides and other Grignard reagents. In many cases, allylmagnesium reagents either react with low stereoselectivity when other Grignard reagents react with high selectivity, or allylmagnesium reagents react with the opposite stereoselectivity. This review collects hundreds of examples, discusses the origins of stereoselectivities or the lack of stereoselectivity, and evaluates why selectivity may not occur and when it will likely occur.
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Affiliation(s)
- Nicole D. Bartolo
- Department of Chemistry, New York University, 100
Washington Square East, New York, NY 10003, USA
| | - Jacquelyne A. Read
- Department of Chemistry, New York University, 100
Washington Square East, New York, NY 10003, USA
- Department of Chemistry, University of Utah, 315 South 1400
East, Salt Lake City, UT 84112, USA
| | - Elizabeth M. Valentín
- Department of Chemistry, New York University, 100
Washington Square East, New York, NY 10003, USA
- Department of Chemistry, Susquehanna University, 514
University Avenue, Selinsgrove, PA 17870, USA
| | - K. A. Woerpel
- Department of Chemistry, New York University, 100
Washington Square East, New York, NY 10003, USA
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6
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Electrochemical Derivatization of Acetaminophen for Indirect Determination of Eflornithine Using β‐CD Modified Glassy Carbon Electrode. ELECTROANAL 2019. [DOI: 10.1002/elan.201900087] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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7
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Wada M, Suzuki H, Kato M, Oikawa H, Tsubouchi A, Oguri H. Stereodivergent Synthesis of Bispyrrolidinoindoline Alkaloidal Scaffolds and Generation of a Lead Candidate with Stereospecific Antiproliferative Activity. Chembiochem 2019; 20:1273-1281. [DOI: 10.1002/cbic.201800815] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Mitsuhiro Wada
- Department of Chemistry Faculty of Science Hokkaido University Kita-ku Kita 10 Jo Nishi 8 Chome Sapporo 060–0810 Japan
| | - Hiroyuki Suzuki
- Department of Experimental Pathology Graduate School of Comprehensive Human Sciences and Faculty of Medicine University of Tsukuba 1-1-1 Tennodai Tsukuba 305–8575 Japan
| | - Mitsuyasu Kato
- Department of Experimental Pathology Graduate School of Comprehensive Human Sciences and Faculty of Medicine University of Tsukuba 1-1-1 Tennodai Tsukuba 305–8575 Japan
| | - Hideaki Oikawa
- Department of Chemistry Faculty of Science Hokkaido University Kita-ku Kita 10 Jo Nishi 8 Chome Sapporo 060–0810 Japan
| | - Akira Tsubouchi
- Department of Applied Chemistry Graduate School of Engineering Tokyo University of Agriculture and Technology 2–24-16 Nakacho Koganei Tokyo 184–8588 Japan
| | - Hiroki Oguri
- Department of Applied Chemistry Graduate School of Engineering Tokyo University of Agriculture and Technology 2–24-16 Nakacho Koganei Tokyo 184–8588 Japan
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8
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Naß J, Efferth T. The activity of Artemisia spp. and their constituents against Trypanosomiasis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2018; 47:184-191. [PMID: 30166103 DOI: 10.1016/j.phymed.2018.06.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 03/15/2018] [Accepted: 06/06/2018] [Indexed: 05/21/2023]
Abstract
BACKGROUND Trypanosomiasis belongs to the neglected tropical diseases. Although standard therapies are available, the safety and efficacy of current synthetic drugs are limited due to the development of drug resistance and adverse side effects. PURPOSE Artemisia annua and artemisinin are not only active against Plasmodia, but also other protozoa. Therefore, we reviewed the literature on species of the genus Artemisia and their phytochemicals regarding their activity against trypanosomes. STUDY DESIGN A PubMed search for "Artemisia/Artemisinin and Trypanosoma" has been conducted for literature until December 2017. RESULTS Interestingly, not only A. annua L. and its active principle, artemisinin revealed inhibitory activity towards trypanosomes. Other Artemisia species (A. absinthium, A. abyssinica, A. afra, A. douglasia, A. elegantissima, A. maciverae, A. mexicana, and A. roxburghiana) also inhibited T. brucei, T. cruzi, or T. congolense. The plants contained numerous chemical constituents including 3',4'-dihydroxybonanzin, apigenin, betulinic acid, bonanzin, dehydroleucodine, dihydroluteolin, dracunculin and bis-dracunculin, helenalin, nepetin, scoparol, scopoletin, stigmasterol, (Z)-p‑hydroxy cinnamic acid, β-sitosterol and others. In addition to artemisinin from A. annua, artemether and artesunate, further novel artemisinin derivatives and nanotechnological preparations may also be useful to combat Trypanosoma infections. CONCLUSION There are numerous results reporting on the anti-trypanosomal activity the genus Artemisia, artemisinin and its derivatives and other phytochemicals from Artemisia species. This field of research is, however, still in its infancy and more intensive research is required to explore the full potential of diverse Artemisia species and their chemical ingredients for eradication of trypanosomal infections.
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Affiliation(s)
- Janine Naß
- Department of Pharmaceutical Biology, Institute of Biochemistry and Pharmacy, Johannes Gutenberg University, Staudinger Weg 5, Mainz 55128, Germany
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Biochemistry and Pharmacy, Johannes Gutenberg University, Staudinger Weg 5, Mainz 55128, Germany.
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9
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Bonepally KR, Hiruma T, Mizoguchi H, Ochiai K, Suzuki S, Oikawa H, Ishiyama A, Hokari R, Iwatsuki M, Otoguro K, O̅mura S, Oguri H. Design and De Novo Synthesis of 6-Aza-artemisinins. Org Lett 2018; 20:4667-4671. [DOI: 10.1021/acs.orglett.8b01987] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Karunakar Reddy Bonepally
- Division of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Takahisa Hiruma
- Division of Chemistry, Graduate School of Science, Hokkaido University, North 10 West 8, Kita-ku, Sapporo 060-0810, Japan
| | - Haruki Mizoguchi
- Division of Chemistry, Graduate School of Science, Hokkaido University, North 10 West 8, Kita-ku, Sapporo 060-0810, Japan
| | - Kyohei Ochiai
- Division of Chemistry, Graduate School of Science, Hokkaido University, North 10 West 8, Kita-ku, Sapporo 060-0810, Japan
| | - Shun Suzuki
- Division of Chemistry, Graduate School of Science, Hokkaido University, North 10 West 8, Kita-ku, Sapporo 060-0810, Japan
| | - Hideaki Oikawa
- Division of Chemistry, Graduate School of Science, Hokkaido University, North 10 West 8, Kita-ku, Sapporo 060-0810, Japan
| | - Aki Ishiyama
- Research Center for Tropical Diseases, Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Rei Hokari
- Research Center for Tropical Diseases, Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Masato Iwatsuki
- Research Center for Tropical Diseases, Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Kazuhiko Otoguro
- Research Center for Tropical Diseases, Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Satoshi O̅mura
- Research Center for Tropical Diseases, Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Hiroki Oguri
- Division of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
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10
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Shimokawa J. Synthetic Studies on Heteropolycyclic Natural Products: Development of Divergent Strategy. Chem Pharm Bull (Tokyo) 2018; 66:105-115. [DOI: 10.1248/cpb.c17-00819] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Jun Shimokawa
- Graduate School of Pharmaceutical Sciences, Nagoya University
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11
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Guo R, Zheng X, Zhang D, Zhang G. Rhodium(i)-catalyzed stereoselective [4+2] cycloaddition of oxetanols with alkynes through C(sp 3)-C(sp 3) bond cleavage. Chem Sci 2017; 8:3002-3006. [PMID: 28451367 PMCID: PMC5380880 DOI: 10.1039/c6sc05246k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 01/22/2017] [Indexed: 12/31/2022] Open
Abstract
An efficient and convenient synthesis of highly functionalized dihydropyrans has been achieved through rhodium(i)-catalysed tandem C(sp3)–C(sp3) bond cleavage and annulation of oxetanols with alkynes.
An efficient and convenient synthesis of highly functionalized dihydropyrans has been achieved through rhodium(i)-catalysed tandem C(sp3)–C(sp3) bond cleavage and annulation of oxetanols with alkynes. An enantioselective version was enabled using a Binaphine ligand. Excellent site-selectivity and remarkable enantioretention are obtained for 2-substituted oxetanols.
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Affiliation(s)
- Rui Guo
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , P. R. China . .,University of Chinese Academy of Sciences , Beijing , 100049 , China
| | - Xinxin Zheng
- Institute of Pharmaceutical Science , China Pharmaceutical University , Nanjing , P. R. China .
| | - Dayong Zhang
- Institute of Pharmaceutical Science , China Pharmaceutical University , Nanjing , P. R. China .
| | - Guozhu Zhang
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , P. R. China . .,University of Chinese Academy of Sciences , Beijing , 100049 , China
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12
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Watanabe R, Mizoguchi H, Oikawa H, Ohashi H, Watashi K, Oguri H. Stereo-controlled synthesis of functionalized tetrahydropyridines based on the cyanomethylation of 1,6-dihydropyridines and generation of anti-hepatitis C virus agents. Bioorg Med Chem 2017; 25:2851-2855. [PMID: 28314509 DOI: 10.1016/j.bmc.2017.03.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 03/01/2017] [Accepted: 03/05/2017] [Indexed: 12/12/2022]
Abstract
Densely functionalized tetrahydropyridines were stereoselectively synthesized from 1,6-dihydropyridines. Exploiting a carbonyl group installed at the C3 position of the 1,6-dihydropyridine system, we devised a strategy for cyanomethylation at C2/C6 and subsequent divergent installation of an allyl group at C3/C5 in a highly regio- and stereo-controlled manner. This versatile protocol for programmable functionalization of the 1,6-dihydropyridine system allows the divergent and streamlined synthesis of multiply-substituted tetrahydropyridines as an important class of biologically and medicinally relevant scaffolds. Two of the N-heterocyclic compounds bearing an alkyl nitrile group showed anti-hepatitis C virus (HCV) activity.
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Affiliation(s)
- Ryo Watanabe
- Division of Chemistry, Graduate School of Science, Hokkaido University, North 10 West 8, Sapporo 060-0810, Japan
| | - Haruki Mizoguchi
- Division of Chemistry, Graduate School of Science, Hokkaido University, North 10 West 8, Sapporo 060-0810, Japan
| | - Hideaki Oikawa
- Division of Chemistry, Graduate School of Science, Hokkaido University, North 10 West 8, Sapporo 060-0810, Japan
| | - Hirofumi Ohashi
- Department of Virology II, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo 162-8640, Japan; Department of Applied Biological Sciences, Tokyo University of Science, Graduate School of Science and Technology, Noda, Chiba 278-8510, Japan
| | - Koichi Watashi
- Department of Virology II, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo 162-8640, Japan; Department of Applied Biological Sciences, Tokyo University of Science, Graduate School of Science and Technology, Noda, Chiba 278-8510, Japan; JST, CREST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Hiroki Oguri
- Division of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan; JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
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13
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Bebbington MWP. Natural product analogues: towards a blueprint for analogue-focused synthesis. Chem Soc Rev 2017; 46:5059-5109. [DOI: 10.1039/c6cs00842a] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A review of approaches to natural product analogues leads to the suggestion of new methods for the generation of biologically active natural product-like scaffolds.
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14
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Kwon SH, Seo HA, Cheon CH. Total Synthesis of Luotonin A and Rutaecarpine from an Aldimine via the Designed Cyclization. Org Lett 2016; 18:5280-5283. [DOI: 10.1021/acs.orglett.6b02597] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Se Hyun Kwon
- Department of Chemistry, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Hong-Ahn Seo
- Department of Chemistry, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Cheol-Hong Cheon
- Department of Chemistry, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
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15
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Mao J, Li H, Wen H, Li M, Fan X, Bao W. Palladium-Catalyzed Two-Component Domino Coupling Reaction of (Z)-β-Bromostyrenes with Norbornenes: Synthesis of 1,5-Enynes. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500865] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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16
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Oguri H. Biomimetic Assembly Lines Producing Natural Product Analogs: Strategies from a Versatile Manifold to Skeletally Diverse Scaffolds. CHEM REC 2016; 16:652-66. [DOI: 10.1002/tcr.201500213] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Indexed: 01/06/2023]
Affiliation(s)
- Hiroki Oguri
- Division of Applied Chemistry Graduate School of Engineering; Tokyo University of Agriculture and Technology; 2-24-16 Nakacho Koganei Tokyo 184-8588 Japan
- JST PRESTO; 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
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17
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Lenci E, Menchi G, Trabocchi A. Carbohydrates in diversity-oriented synthesis: challenges and opportunities. Org Biomol Chem 2016; 14:808-25. [DOI: 10.1039/c5ob02253c] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Carbohydrates are attractive building blocks for diversity-oriented synthesis due to their stereochemical diversity and high density of polar functional groups.
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Affiliation(s)
- E. Lenci
- Department of Chemistry “Ugo Schiff”
- University of Florence
- Sesto Fiorentino
- Italy
| | - G. Menchi
- Department of Chemistry “Ugo Schiff”
- University of Florence
- Sesto Fiorentino
- Italy
| | - A. Trabocchi
- Department of Chemistry “Ugo Schiff”
- University of Florence
- Sesto Fiorentino
- Italy
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18
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Oguri H. Biomimetic Assembly Lines Producing Natural Product Analogs: Strategies from a Versatile Manifold to Skeletally Diverse Scaffolds. CHEM REC 2016. [DOI: 10.1002/tcr.201201600213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hiroki Oguri
- Division of Applied Chemistry Graduate School of Engineering; Tokyo University of Agriculture and Technology; 2-24-16 Nakacho Koganei Tokyo 184-8588 Japan
- JST PRESTO; 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
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Mizoguchi H, Oguri H. Development of an Artificial Assembly Line Generating Skeletally Diverse Indole Alkaloids Inspired by Biogenetic Strategy. J SYN ORG CHEM JPN 2016. [DOI: 10.5059/yukigoseikyokaishi.74.854] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Hiroki Oguri
- Division of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology
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Chen QF, Wang FP, Liu XY. Generating Skeletal Diversity from the C19-Diterpenoid Alkaloid Deltaline: A Ring-Distortion Approach. Chemistry 2015; 21:8946-50. [DOI: 10.1002/chem.201500839] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Indexed: 01/25/2023]
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22
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Kim J, Kim H, Park SB. Privileged Structures: Efficient Chemical “Navigators” toward Unexplored Biologically Relevant Chemical Spaces. J Am Chem Soc 2014; 136:14629-38. [DOI: 10.1021/ja508343a] [Citation(s) in RCA: 204] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Jonghoon Kim
- Department
of Chemistry, Seoul National University, Seoul 151-747, South Korea
| | - Heejun Kim
- Department
of Chemistry, Seoul National University, Seoul 151-747, South Korea
| | - Seung Bum Park
- Department
of Chemistry, Seoul National University, Seoul 151-747, South Korea
- Department
of Biophysics and Chemical Biology/N-Bio Institute, Seoul National University, Seoul 151-747, South Korea
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24
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Biased and unbiased strategies to identify biologically active small molecules. Bioorg Med Chem 2014; 22:4474-89. [DOI: 10.1016/j.bmc.2014.04.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 04/03/2014] [Accepted: 04/10/2014] [Indexed: 12/20/2022]
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25
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Diversity-oriented synthesis of Lycopodium alkaloids inspired by the hidden functional group pairing pattern. Nat Commun 2014; 5:4614. [PMID: 25082077 DOI: 10.1038/ncomms5614] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Accepted: 07/07/2014] [Indexed: 01/05/2023] Open
Abstract
Natural products continue to provide a rich source of inspiration for both chemists and biologists. The efficient synthesis of bioactive natural products or natural product-like molecules has offered tremendous opportunities for complex biological processes exploration and drug discovery. However, because natural products usually contain numerous stereogenic centres and polycyclic ring systems, significant synthetic challenges remain. Here we employ the build/couple/pair strategy that is frequently used in diversity-oriented synthesis to obtain skeletally diverse compounds with complexities comparable to natural products. Inspired by the functional group pairing patterns hidden in Lycopodium alkaloids, we efficiently and in parallel construct four natural products, (+)-Serratezomine A, (-)-Serratinine, (+)-8α-Hydroxyfawcettimine and (-)-Lycoposerramine-U, as well as six different unnatural scaffolds, following the advanced build/couple/pair algorithm. This newly developed strategy is expected to be applied to the efficient synthesis of other complex natural products possessing functional group pairing patterns as well as skeletally diverse natural product-like molecules.
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Natural products as lead structures: chemical transformations to create lead-like libraries. Drug Discov Today 2014; 19:215-21. [DOI: 10.1016/j.drudis.2013.10.013] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 08/27/2013] [Accepted: 10/21/2013] [Indexed: 11/22/2022]
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27
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Terent'ev AO, Borisov DA, Vil’ VA, Dembitsky VM. Synthesis of five- and six-membered cyclic organic peroxides: Key transformations into peroxide ring-retaining products. Beilstein J Org Chem 2014; 10:34-114. [PMID: 24454562 PMCID: PMC3896255 DOI: 10.3762/bjoc.10.6] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2013] [Accepted: 11/16/2013] [Indexed: 12/16/2022] Open
Abstract
The present review describes the current status of synthetic five and six-membered cyclic peroxides such as 1,2-dioxolanes, 1,2,4-trioxolanes (ozonides), 1,2-dioxanes, 1,2-dioxenes, 1,2,4-trioxanes, and 1,2,4,5-tetraoxanes. The literature from 2000 onwards is surveyed to provide an update on synthesis of cyclic peroxides. The indicated period of time is, on the whole, characterized by the development of new efficient and scale-up methods for the preparation of these cyclic compounds. It was shown that cyclic peroxides remain unchanged throughout the course of a wide range of fundamental organic reactions. Due to these properties, the molecular structures can be greatly modified to give peroxide ring-retaining products. The chemistry of cyclic peroxides has attracted considerable attention, because these compounds are used in medicine for the design of antimalarial, antihelminthic, and antitumor agents.
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Key Words
- 1,2,4,5-tetraoxanes
- 1,2,4-trioxanes
- 1,2,4-trioxolanes
- 1,2-dioxanes
- 1,2-dioxenes
- 1,2-dioxolanes
- cyclic peroxides
- ozonides
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Affiliation(s)
- Alexander O Terent'ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Dmitry A Borisov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Vera A Vil’
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Valery M Dembitsky
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
- Institute for Drug Research, P.O. Box 12065, Hebrew University, Jerusalem 91120, Israel
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28
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Biogenetically inspired synthesis and skeletal diversification of indole alkaloids. Nat Chem 2013; 6:57-64. [PMID: 24345948 DOI: 10.1038/nchem.1798] [Citation(s) in RCA: 175] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 10/11/2013] [Indexed: 02/07/2023]
Abstract
To access architecturally complex natural products, chemists usually devise a customized synthetic strategy for constructing a single target skeleton. In contrast, biosynthetic assembly lines often employ divergent intramolecular cyclizations of a polyunsaturated common intermediate to produce diverse arrays of scaffolds. With the aim of integrating such biogenetic strategies, we show the development of an artificial divergent assembly line generating unprecedented numbers of scaffold variations of terpenoid indole alkaloids. This approach not only allows practical access to multipotent intermediates, but also enables systematic diversification of skeletal, stereochemical and functional group properties without structural simplification of naturally occurring alkaloids. Three distinct modes of [4+2] cyclizations and two types of redox-mediated annulations provided divergent access to five skeletally distinct scaffolds involving iboga-, aspidosperma-, andranginine- and ngouniensine-type skeletons and a non-natural variant within six to nine steps from tryptamine. The efficiency of our approach was demonstrated by successful total syntheses of (±)-vincadifformine, (±)-andranginine and (-)-catharanthine.
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29
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Serba C, Winssinger N. Following the Lead from Nature: Divergent Pathways in Natural Product Synthesis and Diversity-Oriented Synthesis. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300201] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
An increasing number of synthetic organic chemists are embracing the philosophy of efficiency. Herein we highlight multi-bond forming processes, which form two or more new covalent bonds in a single synthetic operation. Such processes, which have the ability to rapidly increase structural complexity, are preeminent in contemporary synthetic organic chemistry. In this short review we classify, analyse, and contrast contemporary multi-bond forming processes, frame these cutting edge contributions within a historical context, and speculate on likely future developments in the area.
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Kreul SM, Havighurst T, Kim K, Mendonça EA, Wood GS, Snow S, Borich A, Verma A, Bailey HH. A phase III skin cancer chemoprevention study of DFMO: long-term follow-up of skin cancer events and toxicity. Cancer Prev Res (Phila) 2012; 5:1368-74. [PMID: 23060038 DOI: 10.1158/1940-6207.capr-12-0233] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Decreasing the incidence of nonmelanoma skin cancer (NMSC) is of great importance in regards to future healthcare services. Given the previously reported preventive effects of α-difluoromethylornithine (DFMO) in skin and colon cancer trials, we determined appropriate cause to update the clinical data on the subjects from the recently reported randomized, double-blind, placebo-controlled phase III skin cancer prevention study of DFMO. Our intention was to retrospectively assess the further incidence of skin cancer, other malignancies, and adverse events of patients accrued to our phase III skin cancer prevention study of DFMO. Clinical records of 209 University of Wisconsin (UW) Health subjects were reviewed, and 2,092.7 person years of on study (884.3 person years) and poststudy (1,208.4 person years) follow-up for these patients were assessed for new NMSC events and recurrence rates from the on study period, the poststudy period, and the two study periods combined. No evidence of increased significant diagnoses or serious adverse events was observed in the DFMO participants. The initially observed, marginally significant reduction (P = 0.069) in NMSC rates for DFMO subjects relative to placebo continued without evidence of rebound. Event rates after discontinuation from study for total NMSCs (DFMO 0.236 NMSC/person/year, placebo 0.297, P = 0.48) or the subtypes of basal cell carcinomas (BCC; DFMO 0.179 BCC/person/year, placebo 0.190, P = 0.77) and squamous cell carcinomas (SCC; DFMO 0.057 SCC/person/year, placebo 0.107, P = 0.43) are listed. Follow-up data revealed a persistent but insignificant reduction in new NMSCs occurring in DFMO subjects without evidence of latent or cumulative toxicity relative to placebo subjects.
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Affiliation(s)
- Sarah M Kreul
- University of Wisconsin Carbone Cancer Center, Madison, Wisconsin, USA
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32
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Oguri H, Mizoguchi H, Oikawa H, Ishiyama A, Iwatsuki M, Otoguro K, Omura S. Parallel and four-step synthesis of natural-product-inspired scaffolds through modular assembly and divergent cyclization. Beilstein J Org Chem 2012; 8:930-40. [PMID: 23015843 PMCID: PMC3388883 DOI: 10.3762/bjoc.8.105] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Accepted: 06/01/2012] [Indexed: 12/22/2022] Open
Abstract
By emulating the universal biosynthetic strategy, which employs modular assembly and divergent cyclizations, we have developed a four-step synthetic process to yield a collection of natural-product-inspired scaffolds. Modular assembly of building blocks onto a piperidine-based manifold 6, having a carboxylic acid group, was achieved through Ugi condensation, N-acetoacetylation and diazotransfer, leading to cyclization precursors. The rhodium-catalyzed tandem cyclization and divergent cycloaddition gave rise to tetracyclic and hexacyclic scaffolds by the appropriate choice of dipolarophiles installed at modules 3 and 4. A different piperidine-based manifold 15 bearing an amino group was successfully applied to demonstrate the flexibility and scope of the unified four-step process for the generation of structural diversity in the fused scaffolds. Evaluation of in vitro antitrypanosomal activities of the collections and preliminary structure–activity relationship (SAR) studies were also undertaken.
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Affiliation(s)
- Hiroki Oguri
- Division of Chemistry, Graduate School of Science, Hokkaido University, Sapporo, Kita-ku, Hokkaido 060-0810, Japan
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Navarro G, Chokpaiboon S, De Muylder G, Bray WM, Nisam SC, McKerrow JH, Pudhom K, Linington RG. Hit-to-lead development of the chamigrane endoperoxide merulin A for the treatment of African sleeping sickness. PLoS One 2012; 7:e46172. [PMID: 23029428 PMCID: PMC3459870 DOI: 10.1371/journal.pone.0046172] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Accepted: 08/30/2012] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Human African trypanosomiasis (HAT) is an infectious disease with a large global health burden occurring primarily in Central and Eastern Africa. Most current treatments have poor blood brain barrier (BBB) penetration, which prevent them from targeting the most lethal stage of the infection. In addition, current therapeutics suffer from a variety of limitations ranging from serious side effects to difficulties with treatment administration. Therefore it is of crucial importance to find new treatments that are safe, affordable, and effective against both sub-species of Trypanosoma brucei. METHODS Semi-synthetic derivatization of the fungally-derived natural product merulin A (1) has led to the discovery of new development candidates for the protozoan parasite T. brucei, the causative agent of HAT. Creation of an initial SAR library based around the merulin scaffold revealed several key features required for activity, including the endoperoxide bridge, as well as one position suitable for further derivatization. Subsequent synthesis of a 20-membered analogue library, guided by the addition of acyl groups that improve the drug-like properties of the merulin A core, resulted in the development of compound 12 with an IC(50) of 60 nM against T. brucei, and a selectivity index greater than 300-fold against HeLa and immortalized glial cells. SIGNIFICANCE We report the semi-synthetic optimization of the merulin class of endoperoxide natural products as development candidates against T. brucei. We have identified compounds with low nM antiparasitic activities and high selectivity indices against HeLa cells. These compounds can be produced economically in large quantities via a one step derivatization from the microbial fermentation broth isolate, making them encouraging lead candidates for further development.
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Affiliation(s)
- Gabriel Navarro
- Department of Chemistry and Biochemistry, University of California Santa Cruz, Santa Cruz, California, United States of America
| | - Supchar Chokpaiboon
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Geraldine De Muylder
- Sandler Center for Basic Research in Parasitic Disease, University of California San Francisco, San Francisco, California, United States of America
| | - Walter M. Bray
- Chemical Screening Center, University of California Santa Cruz, Santa Cruz, California, United States of America
| | - Sean C. Nisam
- Chemical Screening Center, University of California Santa Cruz, Santa Cruz, California, United States of America
| | - James H. McKerrow
- Sandler Center for Basic Research in Parasitic Disease, University of California San Francisco, San Francisco, California, United States of America
| | - Khanitha Pudhom
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Roger G. Linington
- Department of Chemistry and Biochemistry, University of California Santa Cruz, Santa Cruz, California, United States of America
- * E-mail:
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Morii T, Uesugi M. Two Days of Experiments in Vietnam: Asian Chemical Biology Initiative, Hanoi Meeting. ACS Chem Biol 2012. [DOI: 10.1021/cb300132f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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35
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Dow M, Fisher M, James T, Marchetti F, Nelson A. Towards the systematic exploration of chemical space. Org Biomol Chem 2012; 10:17-28. [DOI: 10.1039/c1ob06098h] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Affiliation(s)
- Braulio M Fraga
- Instituto de Productos Naturales y Agrobiología, CSIC, 38206-La Laguna, Tenerife, Canary Islands, Spain.
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37
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O' Connor CJ, Beckmann HSG, Spring DR. Diversity-oriented synthesis: producing chemical tools for dissecting biology. Chem Soc Rev 2012; 41:4444-56. [DOI: 10.1039/c2cs35023h] [Citation(s) in RCA: 348] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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38
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Adachi Y, Kamei N, Yokoshima S, Fukuyama T. Total synthesis of (-)-histrionicotoxin. Org Lett 2011; 13:4446-9. [PMID: 21793562 DOI: 10.1021/ol2018032] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A total synthesis of (-)-histrionicotoxin was achieved. Our synthesis features preparation of a pseudosymmetrical dienyne through chirality transfer from an allenylsilane, a dienyne metathesis to produce the bicyclo [5.4.0] system in optically active form, selective functionalization of a diene via a 5-exo-trig iodoetherification, and an asymmetric propargylation.
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Affiliation(s)
- Yohei Adachi
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Tokyo 113-0033, Japan
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