1
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Aksenov DA, Smith JL, Aksenov AV, Prityko LA, Aksenov NA, Kuzminov IK, Aleksandrova EV, Sathish P, Mesa-Diaz N, Vernaza A, Zhang A, Du L, Kornienko A. 2-(3-Indolyl)acetamides and their oxazoline analogues: Anticancer SAR study. Bioorg Med Chem Lett 2024; 102:129681. [PMID: 38432288 DOI: 10.1016/j.bmcl.2024.129681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 02/21/2024] [Accepted: 02/28/2024] [Indexed: 03/05/2024]
Abstract
We previously studied 2-aryl-2-(3-indolyl)acetohydroxamates as potential agents against melanoma. These compounds were ineffective in a mouse melanoma xenograft model, most likely due to unfavorable metabolic properties, specifically due to glucuronidation of the N-hydroxyl of the hydoxamic moiety. In the present work, we prepared a series of analogues, 2-aryl-2-(3-indolyl)acetamides and their oxazoline derivatives, which do not contain the N-hydroxyl group. We investigated the structure-activity relationship in both series of compounds and found that the 2-naphthyl is a preferred group at C-2 of the indole in the amide series, whereas the tetralin moiety is favorable in the same location in the oxazoline series. Overall, three compounds in the amide series have GI50 values as low as 0.2-0.3 µM and the results clearly indicate that the N-hydroxyl group is not necessary for high potency in vitro.
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Affiliation(s)
- Dmitrii A Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Jadyn L Smith
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Alexander V Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Lidiya A Prityko
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Nicolai A Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Iliya K Kuzminov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Elena V Aleksandrova
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Puppala Sathish
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Nakya Mesa-Diaz
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Alexandra Vernaza
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Angela Zhang
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Liqin Du
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Alexander Kornienko
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA.
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2
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Abaev VT, Aksenov NA, Aksenov DA, Aleksandrova EV, Akulova AS, Kurenkov IA, Leontiev AV, Aksenov AV. One-Pot Synthesis of Polynuclear Indole Derivatives by Friedel–Crafts Alkylation of γ-Hydroxybutyrolactams. Molecules 2023; 28:molecules28073162. [PMID: 37049924 PMCID: PMC10095734 DOI: 10.3390/molecules28073162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/22/2023] [Accepted: 03/31/2023] [Indexed: 04/05/2023] Open
Abstract
The Friedel–Crafts reaction of novel 3,5-diarylsubstituted 5-hydroxy-1,5-dihydro-2H-pyrrol-2-ones was used for low cost, one-pot preparation of polycyclic indole derivatives structurally similar to Ergot alkaloids.
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Affiliation(s)
- Vladimir T. Abaev
- Department of Chemistry, Biology and Biotechnology, North-Ossetian State University Named after K. L. Khetagurov, 46 Vatutin St., Vladikavkaz 362025, Russia
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia
| | - Nicolai A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia
| | - Dmitrii A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia
| | - Elena V. Aleksandrova
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia
| | - Alesia S. Akulova
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia
| | - Igor A. Kurenkov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia
| | - Alexander V. Leontiev
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia
| | - Alexander V. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia
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3
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An Effective Synthesis of Previously Unknown 7-Aryl Substituted Paullones. Molecules 2023; 28:molecules28052324. [PMID: 36903571 PMCID: PMC10005103 DOI: 10.3390/molecules28052324] [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: 02/16/2023] [Revised: 02/28/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
A straightforward three-step procedure affording a wide range of novel 7-aryl substituted paullone derivatives was developed. This scaffold is structurally similar to 2-(1H-indol-3-yl)acetamides-promising antitumor agents-hence, could be useful for the development of a new class of anticancer drugs.
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4
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Aksenov AV, Kirilov NK, Arutiunov NA, Aksenov DA, Kuzminov IK, Aksenov NA, Turner DN, Rogelj S, Kornienko A, Rubin M. Reductive Cleavage of 4' H-Spiro[indole-3,5'-isoxazoles] En Route to 2-(1 H-Indol-3-yl)acetamides with Anticancer Activities. J Org Chem 2022; 87:13955-13964. [PMID: 36260110 DOI: 10.1021/acs.joc.2c01627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Unusual cascade transformation involving ring opening and 1,2-alkyl shift was observed upon the reduction of 4'H-spiro[indole-3,5'-isoxazoles] or 2-(3-oxoindolin-2-yl)acetonitriles with sodium borohydride. This reaction allowed for expeditious and highly efficient preparation of 2-(1H-Indol-3-yl)acetamides with antiproliferative properties.
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Affiliation(s)
- Alexander V Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Nikita K Kirilov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Nikolai A Arutiunov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Dmitrii A Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Iliya K Kuzminov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Nicolai A Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Danielle N Turner
- Departments of Biology, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, United States
| | - Snezna Rogelj
- Departments of Biology, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, United States
| | - Alexander Kornienko
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, Texas 78666, United States
| | - Michael Rubin
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation.,Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, United States
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5
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Thakur A, Faujdar C, Sharma R, Sharma S, Malik B, Nepali K, Liou JP. Glioblastoma: Current Status, Emerging Targets, and Recent Advances. J Med Chem 2022; 65:8596-8685. [PMID: 35786935 PMCID: PMC9297300 DOI: 10.1021/acs.jmedchem.1c01946] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Glioblastoma (GBM) is a highly malignant
brain tumor characterized
by a heterogeneous population of genetically unstable and highly infiltrative
cells that are resistant to chemotherapy. Although substantial efforts
have been invested in the field of anti-GBM drug discovery in the
past decade, success has primarily been confined to the preclinical
level, and clinical studies have often been hampered due to efficacy-,
selectivity-, or physicochemical property-related issues. Thus, expansion
of the list of molecular targets coupled with a pragmatic design of
new small-molecule inhibitors with central nervous system (CNS)-penetrating
ability is required to steer the wheels of anti-GBM drug discovery
endeavors. This Perspective presents various aspects of drug discovery
(challenges in GBM drug discovery and delivery, therapeutic targets,
and agents under clinical investigation). The comprehensively covered
sections include the recent medicinal chemistry campaigns embarked
upon to validate the potential of numerous enzymes/proteins/receptors
as therapeutic targets in GBM.
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Affiliation(s)
- Amandeep Thakur
- School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan
| | - Chetna Faujdar
- Department of Biotechnology, Jaypee Institute of Information Technology, Noida 201307, India
| | - Ram Sharma
- School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan
| | - Sachin Sharma
- School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan
| | - Basant Malik
- Department of Sterile Product Development, Research and Development-Unit 2, Jubiliant Generics Ltd., Noida 201301, India
| | - Kunal Nepali
- School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan
| | - Jing Ping Liou
- School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan
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6
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Methylation of 2-Aryl-2-(3-indolyl)acetohydroxamic Acids and Evaluation of Cytotoxic Activity of the Products. MOLBANK 2021. [DOI: 10.3390/m1307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
2-Aryl-2-(3-indolyl)acetohydroxamic acids demonstrate promising antitumor activity, but quickly metabolize in vivo via glucuronidation of hydroxamic acid residue. In an attempt to improve their pharmacokinetics, methyl esters were synthesized via a newly developed protocol for chemoselective mono-methylation of hydroxamic acids. The cytotoxicity of these derivatives against the HeLa cell line was evaluated and found to be inferior compared to the parent lead compounds.
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7
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Aksenov DA, Arutyunov NA, Gasanova AZ, Aksenov NA, Aksenov AV, Lower C, Rubin M. Synthetic studies towards benzofuro[2,3-b]quinoline and 6H-indolo[2,3-b]quinoline cores: Total synthesis of norneocryptolepine and neocryptolepine. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153395] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Abe T, Noda K, Sawada D. Synthesis of α-substituted indolylacetamide using acetonitriles as acetamide enolate equivalents through O-transfer reactions. Chem Commun (Camb) 2021; 57:7493-7496. [PMID: 34212954 DOI: 10.1039/d1cc02821a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We introduce readily available ammonium hemiaminals as O-transfer reagents and commercially available acetonitriles as a primary amide enolate precursor. The combination serves as an amide enolate equivalent, thereby providing one-pot access to α-substituted indolylacetamides. A broad substrate scope and good functional group tolerance as well as gram-scale synthesis make this protocol highly attractive. Mechanistic experiments suggest that the cyano group is trapped by a hydroxy group of hemiaminals en route to the desired primary amides under metal-free conditions.
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Affiliation(s)
- Takumi Abe
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 7008530, Japan.
| | - Kenta Noda
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 7008530, Japan.
| | - Daisuke Sawada
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 7008530, Japan.
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9
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Aksenov AV, Aksenov NA, Kirilov NK, Skomorokhov AA, Aksenov DA, Kurenkov IA, Sorokina EA, Nobi MA, Rubin M. Does electrophilic activation of nitroalkanes in polyphosphoric acid involve formation of nitrile oxides? RSC Adv 2021; 11:35937-35945. [PMID: 35492804 PMCID: PMC9043268 DOI: 10.1039/d1ra06503c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Accepted: 10/27/2021] [Indexed: 11/21/2022] Open
Abstract
The mechanistic rationale involving activation of nitroalkanes towards interaction with nucleophilic reagents in the presence of polyphosphoric acid (PPA) was re-evaluated. Could nitrile oxide moieties be formed during this process? This experiment demonstrates that at least in some cases this could happen, as generated nitrile oxides were successfully intercepted as adducts of [3 + 2] cycloadditions. The mechanistic rationale involving activation of nitroalkanes towards interaction with nucleophilic reagents in the presence of polyphosphoric acid (PPA) was re-evaluated. Could nitrile oxide moieties be formed during this process?![]()
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Affiliation(s)
- Alexander V. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355017, Russia
| | - Nicolai A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355017, Russia
| | - Nikita K. Kirilov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355017, Russia
| | - Anton A. Skomorokhov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355017, Russia
| | - Dmitrii A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355017, Russia
| | - Igor A. Kurenkov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355017, Russia
| | - Elena A. Sorokina
- Organic Chemistry Department, Peoples' Friendship University of Russia (RUDN University), 6, Miklukho-Maklaya St., Moscow, 117198, Russian Federation
| | - Mezvah A. Nobi
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, KS 66045, USA
| | - Michael Rubin
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355017, Russia
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, KS 66045, USA
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10
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Hydroxamic acid hybrids as the potential anticancer agents: An Overview. Eur J Med Chem 2020; 205:112679. [DOI: 10.1016/j.ejmech.2020.112679] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/12/2020] [Accepted: 07/20/2020] [Indexed: 02/06/2023]
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11
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Aksenov NA, Aksenov DA, Skomorokhov AA, Prityko LA, Aksenov AV, Griaznov GD, Rubin M. Synthesis of 2-(1H-Indol-2-yl)acetamides via Brønsted Acid-Assisted Cyclization Cascade. J Org Chem 2020; 85:12128-12146. [DOI: 10.1021/acs.joc.0c01344] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Nicolai A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia
| | - Dmitrii A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia
| | - Anton A. Skomorokhov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia
| | - Lidiya A. Prityko
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia
| | - Alexander V. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia
| | - Georgii D. Griaznov
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, United States
| | - Michael Rubin
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, United States
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12
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Thobokholt EN, Larghi EL, Bracca ABJ, Kaufman TS. Isolation and synthesis of cryptosanguinolentine (isocryptolepine), a naturally-occurring bioactive indoloquinoline alkaloid. RSC Adv 2020; 10:18978-19002. [PMID: 35518305 PMCID: PMC9054090 DOI: 10.1039/d0ra03096a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 05/04/2020] [Indexed: 11/28/2022] Open
Abstract
Cryptosanguinolentine (isocryptolepine) is one of the minor naturally-occurring monomeric indoloquinoline alkaloids, isolated from the West African climbing shrub Cryptolepis sanguinolenta. The natural product displays such a simple and unique skeleton, which chemists became interested in well before it was found in Nature. Because of its structure and biological activity, the natural product has been targeted for synthesis on numerous occasions, employing a wide range of different strategies. Hence, discussed here are aspects related to the isolation of isocryptolepine, as well as the various approaches toward its total synthesis.
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Affiliation(s)
- Elida N Thobokholt
- Instituto de Química Rosario (IQUIR, CONICET-UNR), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario Suipacha 531 S2002LRK Rosario Argentina +54-341-4370477 +54-341-4370477
| | - Enrique L Larghi
- Instituto de Química Rosario (IQUIR, CONICET-UNR), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario Suipacha 531 S2002LRK Rosario Argentina +54-341-4370477 +54-341-4370477
| | - Andrea B J Bracca
- Instituto de Química Rosario (IQUIR, CONICET-UNR), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario Suipacha 531 S2002LRK Rosario Argentina +54-341-4370477 +54-341-4370477
| | - Teodoro S Kaufman
- Instituto de Química Rosario (IQUIR, CONICET-UNR), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario Suipacha 531 S2002LRK Rosario Argentina +54-341-4370477 +54-341-4370477
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13
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Eyong KO, Ketsemen HL, Zhao Z, Du L, Ingels A, Mathieu V, Kornienko A, Hull KG, Folefoc GN, Baskaran S, Romo D. Antiproliferative activity of naphthoquinones and indane carboxylic acids from lapachol against a panel of human cancer cell lines. Med Chem Res 2020. [DOI: 10.1007/s00044-020-02545-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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Jia Y, Wen X, Gong Y, Wang X. Current scenario of indole derivatives with potential anti-drug-resistant cancer activity. Eur J Med Chem 2020; 200:112359. [PMID: 32531682 DOI: 10.1016/j.ejmech.2020.112359] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/09/2020] [Accepted: 04/16/2020] [Indexed: 02/07/2023]
Abstract
Cancer chemotherapy is frequently hampered by drug resistance, so the resistance to anticancer agents represents one of the major obstacles for the effective cancer treatment. Indole derivatives have the potential to act on diverse targets in cancer cells and exhibit promising activity against drug-resistant cancers. Moreover, some indole-containing compounds such as Semaxanib, Sunitinib, Vinorelbine, and Vinblastine have already been applied in clinics for various kinds of cancer even drug-resistant cancer therapy. Thus, indole derivatives are one of significant resources for the development of novel anti-drug-resistant cancer agents. This review focuses on the recent development of indole derivatives with potential therapeutic application for drug-resistant cancers, and the mechanisms of action, the critical aspects of design as well as structure-activity relationships, covering articles published from 2010 to 2020.
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Affiliation(s)
- Yanshu Jia
- Chongqing Institute of Engineering, Chongqing, 400056, China
| | - Xiaoyue Wen
- The Institute of Infection and Inflammation, China Three Gorges University, Yichang, Hubei, 443000, China
| | - Yufeng Gong
- The Second Affiliated Hospital of Mudanjiang Medical University, Mudanjiang, 157000, China
| | - Xuefeng Wang
- Department of Surgery, Zhuji Affiliated Hospital of Shaoxing University, Zhejiang Province, 311800, China.
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15
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Shan C, Hui W, Li H, Wang Z, Guo C, Peng R, Gu J, Chen Y, Ouyang Q. Discovery of Novel Autophagy Inhibitors and Their Sensitization Abilities for Vincristine-Resistant Esophageal Cancer Cell Line Eca109/VCR. ChemMedChem 2020; 15:970-981. [PMID: 32207878 DOI: 10.1002/cmdc.202000004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 03/22/2020] [Indexed: 12/13/2022]
Abstract
Resistance phenomena, especially acquired drug resistance, have been severely hampering the application of chemotherapeutics during cancer chemotherapy. Autophagy plays a role in maintaining the survival of cancer cells and might mediate resistance to chemotherapy drugs. Herein, a new series of 5-amino-2-ether-benzamide derivatives were synthesized and evaluated as autophagy inhibitors. Selected from 14 synthesized compounds as lead autophagy inhibitor, N-(cyclohexylmethyl)-5-(((cyclohexylmethyl)amino)methyl)-2-((4-(trifluoromethyl)benzyl)oxy)benzamide (4 d) showed the most obvious effect of LC3B protein conversion. Further, its autophagy inhibition, evaluated by using transmission electron microscopy and confocal microscopy, showed that the fusion of autophagosomes and lysosomes in the final stage of autophagic flux was suppressed. We also found that 4 d could enhance the chemosensitivity of vincristine in vincristine-resistant esophageal cancer cell line Eca109/VCR in a synergistic, associative manner. Moreover, a computational study showed that 4 d might bind with p62-zz to inhibit autophagy. We also found 4 d to be relatively less cytotoxic to normal cells versus cancer cells than the reported p62-zz inhibitor.
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Affiliation(s)
- Changyu Shan
- Department of Pharmaceutical Chemistry, Third Military Medical University, Chongqing, 400038, China
| | - Wenqi Hui
- Department of Pharmaceutical Chemistry, Third Military Medical University, Chongqing, 400038, China.,Pharmacy Department, Xi' an Fifth Hospital, Xi' an, Shanxi Province, 710082, China
| | - Hongwei Li
- Department of Pharmaceutical Chemistry, Third Military Medical University, Chongqing, 400038, China
| | - Zheng Wang
- College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, Sichuan, 643000, China
| | - Chunling Guo
- Department of Pharmaceutical Chemistry, Third Military Medical University, Chongqing, 400038, China
| | - Ruikun Peng
- Department of Pharmaceutical Chemistry, Third Military Medical University, Chongqing, 400038, China
| | - Jing Gu
- Department of Pharmaceutical Chemistry, Third Military Medical University, Chongqing, 400038, China
| | - Yingchun Chen
- Department of Pharmaceutical Chemistry, Third Military Medical University, Chongqing, 400038, China
| | - Qin Ouyang
- Department of Pharmaceutical Chemistry, Third Military Medical University, Chongqing, 400038, China
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16
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Shcherbakov SS, Magometov AY, Shcherbakova VY, Aksenov AV, Domenyuk DA, Zelensky VA, Rubin M. Electrophilic alkylation of arenes with 5-bromopyrimidine en route to 4-aryl-5-alkynylpyrimidines. RSC Adv 2020; 10:10315-10321. [PMID: 35498620 PMCID: PMC9050372 DOI: 10.1039/d0ra01335h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 03/05/2020] [Indexed: 11/21/2022] Open
Abstract
A new synthetic protocol for preparation of medicinally important 4-aryl-5-alkynylpyrimidines is described. The featured approach involves a sequence of chemo- and regioselective Brønsted acid-catalyzed electrophilic alkylation of arenes with 5-bromopyrimidine, followed by oxidative re-aromatization of the formed dihydropyrimidine ring. Finally, palladium-catalyzed Sonogashira cross-coupling reaction provided an end-game strategy.
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Affiliation(s)
- Stanislav S Shcherbakov
- Department of Chemistry, North Caucasus Federal University 1a Pushkin St. Stavropol 355009 Russian Federation
| | - Artyom Yu Magometov
- Department of Chemistry, North Caucasus Federal University 1a Pushkin St. Stavropol 355009 Russian Federation
| | - Viktoriia Yu Shcherbakova
- Department of Chemistry, North Caucasus Federal University 1a Pushkin St. Stavropol 355009 Russian Federation
| | - Alexander V Aksenov
- Department of Chemistry, North Caucasus Federal University 1a Pushkin St. Stavropol 355009 Russian Federation
| | - Dmitriy A Domenyuk
- Department of General Practice Dentistry and Child Dentistry, Stavropol State Medical University 310 Mira Street Stavropol 355017 Russian Federation
| | - Vladimir A Zelensky
- Department of General Practice Dentistry and Child Dentistry, Stavropol State Medical University 310 Mira Street Stavropol 355017 Russian Federation
| | - Michael Rubin
- Department of Chemistry, North Caucasus Federal University 1a Pushkin St. Stavropol 355009 Russian Federation .,Department of Chemistry, University of Kansas 1567 Irving Hill Road Lawrence KS 66045-7582 USA +1-785-864-5071
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17
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Cheng Y, Li Z. Chemoselective Aza-Michael addition of indoles with 2-arylidenemalononitriles. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2019.1708947] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Ya Cheng
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, P. R. China
| | - Zheng Li
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, P. R. China
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18
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Anticancer Molecule Discovery via C2-Substituent Promoted Oxidative Coupling of Indole and Enolate. iScience 2019; 22:214-228. [PMID: 31786518 PMCID: PMC6909134 DOI: 10.1016/j.isci.2019.11.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 11/09/2019] [Accepted: 11/12/2019] [Indexed: 01/10/2023] Open
Abstract
C2, C3-disubstituted indole is one of the most frequently encountered motifs in bioactive alkaloids and medicinal chemistry. Thus, developing novel, concise, and efficient access to it is highly desired in drug discovery. Herein, we present such an approach to this scaffold by direct oxidative coupling of C2-substituted indoles and enolates. Compared with indole bearing no C2-substituent, higher yields (up to 96%) were obtained for C2-substituted indoles in most cases. Mechanistic studies showed the reaction went through a Fe-chelated radical-anion oxidative coupling procedure promoted by C2-substituent on indole by two means: (1) stabilizing C2-radical intermediate during the reaction; (2) reducing indole homocoupling. This approach serves as a synthetic useful tool to quickly build up bioactive small molecule library of C2, C3-disubstituted indoles, and several products showed promising anticancer activities. Besides, indomethacin and its analogs were conveniently prepared in three-step sequence efficiently, indicating the potential application of our approach in medicinal chemistry. Fe-mediated, C2-substitutent promoted oxidative coupling of indoles and enolates Three-steps to prepare indomethacin and its analogues Quick access to complex indoles library bearing anticancer bioactivities
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Gao Y, Wang H, Wang J, Cheng M. In silico studies on p21-activated kinase 4 inhibitors: comprehensive application of 3D-QSAR analysis, molecular docking, molecular dynamics simulations, and MM-GBSA calculation. J Biomol Struct Dyn 2019; 38:4119-4133. [PMID: 31556340 DOI: 10.1080/07391102.2019.1673823] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
P21-activated kinase 4 (PAK4) is a serine/threonine protein kinase, which is associated with many cancer diseases, and thus being considered as a potential drug target. In this study, three-dimensional quantitative structure-activity relationship (3D-QSAR), molecular docking and molecular dynamics (MD) simulations were performed to explore the structure-activity relationship of a series of pyrropyrazole PAK4 inhibitors. The statistical parameters of comparative molecular field analysis (CoMFA, Q 2 = 0.837, R 2 = 0.990, and R 2 pred = 0.967) and comparative molecular similarity indices analysis (CoMSIA, Q 2 = 0.720, R 2 = 0.972, and R 2 pred = 0.946) were obtained from 3D-QSAR model, which exhibited good predictive ability and significant statistical reliability. The binding mode of PAK4 with its inhibitors was obtained through molecular docking study, which indicated that the residues of GLU396, LEU398, LYS350, and ASP458 were important for activity. Molecular mechanics generalized born surface area (MM-GBSA) method was performed to calculate the binding free energy, which indicated that the coulomb, lipophilic and van der Waals (vdW) interactions made major contributions to the binding affinity. Furthermore, through 100 ns MD simulations, we obtained the key amino acid residues and the types of interactions they participated in. Based on the constructed 3D-QSAR model, some novel pyrropyrazole derivatives targeting PAK4 were designed with improved predicted activities. Pharmacokinetic and toxicity predictions of the designed PAK4 inhibitors were obtained by the pkCSM, indicating these compounds had better absorption, distribution, metabolism, excretion and toxicity (ADMET) properties. Above research provided a valuable insight for developing novel and effective pyrropyrazole compounds targeting PAK4.
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Affiliation(s)
- Yinli Gao
- Key Laboratory of Structure-Based Drugs Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang Liaoning Province, People's Republic of China.,School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang Liaoning Province, People's Republic of China
| | - Hanxun Wang
- Key Laboratory of Structure-Based Drugs Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang Liaoning Province, People's Republic of China.,School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang Liaoning Province, People's Republic of China
| | - Jian Wang
- Key Laboratory of Structure-Based Drugs Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang Liaoning Province, People's Republic of China.,School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang Liaoning Province, People's Republic of China
| | - Maosheng Cheng
- Key Laboratory of Structure-Based Drugs Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang Liaoning Province, People's Republic of China.,School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang Liaoning Province, People's Republic of China
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20
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Segat GC, Moreira CG, Santos EC, Heller M, Schwanke RC, Aksenov AV, Aksenov NA, Aksenov DA, Kornienko A, Marcon R, Calixto JB. A new series of acetohydroxamates shows in vitro and in vivo anticancer activity against melanoma. Invest New Drugs 2019; 38:977-989. [DOI: 10.1007/s10637-019-00849-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 08/21/2019] [Indexed: 11/30/2022]
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21
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Aksenov NA, Skomorokhov AA, Aksenov AV, Voskressensky LG, Rubin MA. Michael addition to 3-(2-nitrovinyl)indoles – route toward aliphatic nitro compounds with heterocyclic substituents. Chem Heterocycl Compd (N Y) 2019. [DOI: 10.1007/s10593-019-02493-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Aksenov AV, Aksenov DA, Arutiunov NA, Aksenov NA, Aleksandrova EV, Zhao Z, Du L, Kornienko A, Rubin M. Synthesis of Spiro[indole-3,5′-isoxazoles] with Anticancer Activity via a Formal [4 + 1]-Spirocyclization of Nitroalkenes to Indoles. J Org Chem 2019; 84:7123-7137. [DOI: 10.1021/acs.joc.9b00808] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Alexander V. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Dmitrii A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Nikolai A. Arutiunov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Nicolai A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Elena V. Aleksandrova
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
| | - Zhenze Zhao
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, Texas 78666, United States
| | - Liqin Du
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, Texas 78666, United States
| | - Alexander Kornienko
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, Texas 78666, United States
| | - Michael Rubin
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russian Federation
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, United States
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23
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Golushko AA, Sandzhieva MA, Ivanov AY, Boyarskaya IA, Khoroshilova OV, Barkov AY, Vasilyev AV. Reactions of 3,3,3-Trihalogeno-1-nitropropenes with Arenes in the Superacid CF 3SO 3H: Synthesis of ( Z)-3,3,3-Trihalogeno-1,2-diarylpropan-1-one Oximes and Study on the Reaction Mechanism. J Org Chem 2018; 83:10142-10157. [PMID: 30004232 DOI: 10.1021/acs.joc.8b01406] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
3,3,3-Trihalogeno-1-nitropropenes C(Hal3)CH═CH(NO2) (Hal = F, Cl, Br) in reaction with arenes in the superacid CF3SO3H (TfOH) at room temperature in 1 h afford 3,3,3-trihalogeno-1,2-diarylpropan-1-one oximes C(Hal3)CH(Ar)-C(Ar)═NOH (CHal3-oximes) in yields of 23-99%. Such CHal3-oximes having one ortho-substituent in the aryl ring exist as atropoisomers in solutions at room temperature. Several cationic intermediates of this reaction were studied by means of NMR and DFT calculations, which proves the detailed reaction mechanism of the formation of CHal3-oximes in TfOH. CHal3-oximes (for Hal = Cl, Br) with DBU in DMF at microwave or thermal activation are cyclized into 5-halogeno-3,4-diarylisoxazoles in yields of 37-59%. CHal3-oximes under the conditions of Beckmann rearrangement with PCl5 in benzene at room temperature in 24 h are turned at first into imidoyl chlorides (yields of 94-96%), which undergo transformation into the corresponding benzamides PhCONHCHPh(CHal3) on silica gel (yields of 46-47%).
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Affiliation(s)
- Andrei A Golushko
- Department of Organic Chemistry, Institute of Chemistry , Saint Petersburg State University , Universitetskaya nab., 7/9 , Saint Petersburg , 199034 , Russia
| | - Maria A Sandzhieva
- Department of Chemistry , Saint Petersburg State Forest Technical University , Institutsky per., 5 , Saint Petersburg , 194021 , Russia
| | - Alexander Yu Ivanov
- Center for Magnetic Resonance, Research Park , St. Petersburg State University , Universitetskiy pr., 26 , Saint Petersburg , Petrodvoretz 198504 , Russia
| | - Irina A Boyarskaya
- Department of Organic Chemistry, Institute of Chemistry , Saint Petersburg State University , Universitetskaya nab., 7/9 , Saint Petersburg , 199034 , Russia
| | - Olesya V Khoroshilova
- Center for X-ray Diffraction Studies, Research Park , St. Petersburg State University , Universitetskiy pr., 26 , Saint Petersburg , Petrodvoretz 198504 , Russia
| | - Alexey Yu Barkov
- Institute of Natural Sciences and Mathematics , Ural Federal University , Mira str., 19 , Yekaterinburg , 620000 , Russia
| | - Aleksander V Vasilyev
- Department of Organic Chemistry, Institute of Chemistry , Saint Petersburg State University , Universitetskaya nab., 7/9 , Saint Petersburg , 199034 , Russia.,Department of Chemistry , Saint Petersburg State Forest Technical University , Institutsky per., 5 , Saint Petersburg , 194021 , Russia
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24
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Konovalov AI, Antipin IS, Burilov VA, Madzhidov TI, Kurbangalieva AR, Nemtarev AV, Solovieva SE, Stoikov II, Mamedov VA, Zakharova LY, Gavrilova EL, Sinyashin OG, Balova IA, Vasilyev AV, Zenkevich IG, Krasavin MY, Kuznetsov MA, Molchanov AP, Novikov MS, Nikolaev VA, Rodina LL, Khlebnikov AF, Beletskaya IP, Vatsadze SZ, Gromov SP, Zyk NV, Lebedev AT, Lemenovskii DA, Petrosyan VS, Nenaidenko VG, Negrebetskii VV, Baukov YI, Shmigol’ TA, Korlyukov AA, Tikhomirov AS, Shchekotikhin AE, Traven’ VF, Voskresenskii LG, Zubkov FI, Golubchikov OA, Semeikin AS, Berezin DB, Stuzhin PA, Filimonov VD, Krasnokutskaya EA, Fedorov AY, Nyuchev AV, Orlov VY, Begunov RS, Rusakov AI, Kolobov AV, Kofanov ER, Fedotova OV, Egorova AY, Charushin VN, Chupakhin ON, Klimochkin YN, Osyanin VA, Reznikov AN, Fisyuk AS, Sagitullina GP, Aksenov AV, Aksenov NA, Grachev MK, Maslennikova VI, Koroteev MP, Brel’ AK, Lisina SV, Medvedeva SM, Shikhaliev KS, Suboch GA, Tovbis MS, Mironovich LM, Ivanov SM, Kurbatov SV, Kletskii ME, Burov ON, Kobrakov KI, Kuznetsov DN. Modern Trends of Organic Chemistry in Russian Universities. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2018. [DOI: 10.1134/s107042801802001x] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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26
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Aksenov AV, Aksenov NA, Aksenov DA, Khamraev VF, Rubin M. Nitrostyrenes as 1,4-CCNO-dipoles: diastereoselective formal [4+1] cycloaddition of indoles. Chem Commun (Camb) 2018; 54:13260-13263. [DOI: 10.1039/c8cc07451h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unusual reactivity of nitrostyrenes in phosphorous acid was discovered, which permits the employment of these readily available synthons as 1,4-CCNO-dipole surrogates in a highly diastereoselective (4+1)-cycloaddition of indoles to afford 4′H-spiro[indole-3,5′-isoxazoles] in a diastereomerically pure form.
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Affiliation(s)
- Alexander V. Aksenov
- Department of Chemistry, North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Nicolai A. Aksenov
- Department of Chemistry, North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Dmitrii A. Aksenov
- Department of Chemistry, North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Vladislav F. Khamraev
- Department of Chemistry, North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Michael Rubin
- Department of Chemistry, North Caucasus Federal University
- Stavropol 355009
- Russian Federation
- Department of Chemistry, University of Kansas
- Lawrence
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27
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Aksenov AV, Aksenov DA, Griaznov GD, Aksenov NA, Voskressensky LG, Rubin M. Unexpected cyclization of 2-(2-aminophenyl)indoles with nitroalkenes to furnish indolo[3,2-c]quinolines. Org Biomol Chem 2018; 16:4325-4332. [DOI: 10.1039/c8ob00588e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel synthetic route to the indoloquinoline core of the alkaloid isocryptolepine involving an unprecedented PPA-mediated reaction of 2-(2-aminophenyl)indenes with nitroalkenes is discovered.
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Affiliation(s)
- Alexander V. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Dmitrii A. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Georgii D. Griaznov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
- Department of Chemistry
| | - Nicolai A. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | | | - Michael Rubin
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
- Department of Chemistry
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28
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Zhang B, Kuang D, Tang X, Mi Y, Luo Q, Song G. Effect of Low-Field High-Frequency nsPEFs on the Biological Behaviors of Human A375 Melanoma Cells. IEEE Trans Biomed Eng 2017; 65:2093-2100. [PMID: 29989943 DOI: 10.1109/tbme.2017.2784546] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE To evaluate the effect of low-field high-frequency nanosecond pulsed electric fields (nsPEFs) on multiple biological behaviors of human A375 melanoma cells and to optimize suitable parameters for further study and clinical use. METHODS An nsPEF generator was developed to generate appropriate pulses. Cell apoptosis and the cell cycle were evaluated by flow cytometry. The CCK-8 assay was performed to explore the effect of nsPEFs on the viability of A375 melanoma cells. Cell migration was assessed using a Transwell Boyden Chamber. The proliferation of A375 melanoma cells was determined by the cloning efficacy test. Furthermore, the nude mouse tumorigenicity assay was used to detect the effectiveness of nsPEFs in vivo. RESULTS The nsPEFs with our tested parameters failed to induce apoptosis of A375 melanoma cells, though nsPEFs with high pulse duration (500 ns) induced necrosis. However, the viability and migration of A375 melanoma cells were significantly inhibited by nsPEFs. nsPEFs also suppressed the proliferation of A375 melanoma cells by restricting cells in G0/G1 phase. Moreover, animal experiments demonstrated that nsPEFs inhibited the growth of melanoma in vivo. CONCLUSION Low-field high-frequency nsPEFs failed to induce apoptosis but effectively inhibited the growth of melanoma via affecting other biological behaviors of melanoma cells, such as cell viability, proliferation, and migration. SIGNIFICANCE This study investigated the influence of low-field high-frequency nsPEFs on melanoma through evaluating their effects on multiple biological behaviors and is helpful in the treatment of melanoma and other tumors.
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29
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Aksenov AV, Aksenov DA, Orazova NA, Aksenov NA, Griaznov GD, De Carvalho A, Kiss R, Mathieu V, Kornienko A, Rubin M. One-Pot, Three-Component Assembly of Indoloquinolines: Total Synthesis of Isocryptolepine. J Org Chem 2017; 82:3011-3018. [DOI: 10.1021/acs.joc.6b03084] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexander V. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russia
| | - Dmitrii A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russia
| | - Naila A. Orazova
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russia
| | - Nicolai A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russia
| | - Georgii D. Griaznov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russia
| | - Annelise De Carvalho
- Laboratoire
de Cancérologie et de Toxicologie Expérimentale, Faculté
de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Robert Kiss
- Laboratoire
de Cancérologie et de Toxicologie Expérimentale, Faculté
de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Véronique Mathieu
- Laboratoire
de Cancérologie et de Toxicologie Expérimentale, Faculté
de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Alexander Kornienko
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, Texas 78666, United States
| | - Michael Rubin
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin Street, Stavropol 355009, Russia
- Department
of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States
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30
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Michael addition to unprotected 3-(2-nitrovinyl)indoles under the conditions of microwave synthesis. Chem Heterocycl Compd (N Y) 2017. [DOI: 10.1007/s10593-017-1988-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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31
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Synthesis and preliminary evaluation of 3-thiocyanato-1H-indoles as potential anticancer agents. Eur J Med Chem 2016; 118:21-6. [DOI: 10.1016/j.ejmech.2016.04.039] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Revised: 04/14/2016] [Accepted: 04/15/2016] [Indexed: 12/19/2022]
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32
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Wu YD, Ma JR, Shu WM, Zheng KL, Wu AX. Base-promoted domino reaction for the synthesis of 2,3-disubstituted indoles from 2-aminobenzaldehyde/2-amino aryl ketones, tosylhydrazine, and aromatic aldehydes. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.06.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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33
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An efficient synthesis of (3-indolyl)acetonitriles by reduction of hydroxamic acids. Chem Heterocycl Compd (N Y) 2016. [DOI: 10.1007/s10593-016-1881-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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34
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Aksenov AV, Aksenov NA, Dzhandigova ZV, Aksenov DA, Voskressensky LG, Nenajdenko VG, Rubin M. Direct reductive coupling of indoles to nitrostyrenes en route to (indol-3-yl)acetamides. RSC Adv 2016. [DOI: 10.1039/c6ra21399e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A highly efficient one-pot method for the reductive coupling of indoles to nitrostyrenes in PPA doped with PCl3 was developed. This method allows direct access to primary (indol-3-yl)acetamides, interesting as anti-cancer drug candidates.
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Affiliation(s)
- Alexander V. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Nicolai A. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
- Department of Organic Chemistry
| | - Zarema V. Dzhandigova
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Dmitrii A. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Leonid G. Voskressensky
- Department of Organic Chemistry
- People's Friendship University of Russia
- Moscow
- Russian Federation
| | | | - Michael Rubin
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
- Department of Chemistry
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35
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Aksenov AV, Nadein ON, Aksenov NA, Skomorokhov AA, Aksenova IV, Rubin MA. Microwave synthesis of 2-[(E)-2-(1H-indol-3-yl)vinyl]hetarenes. Chem Heterocycl Compd (N Y) 2015. [DOI: 10.1007/s10593-015-1788-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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36
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Dasari R, De Carvalho A, Medellin DC, Middleton KN, Hague F, Volmar MNM, Frolova LV, Rossato MF, De La Chapa JJ, Dybdal-Hargreaves NF, Pillai A, Mathieu V, Rogelj S, Gonzales CB, Calixto JB, Evidente A, Gautier M, Munirathinam G, Glass R, Burth P, Pelly SC, van Otterlo WAL, Kiss R, Kornienko A. Synthetic and Biological Studies of Sesquiterpene Polygodial: Activity of 9-Epipolygodial against Drug-Resistant Cancer Cells. ChemMedChem 2015; 10:2014-26. [PMID: 26434977 PMCID: PMC4831215 DOI: 10.1002/cmdc.201500360] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2015] [Indexed: 12/18/2022]
Abstract
Polygodial, a terpenoid dialdehyde isolated from Polygonum hydropiper L., is a known agonist of the transient receptor potential vanilloid 1 (TRPV1). In this investigation a series of polygodial analogues were prepared and investigated for TRPV1-agonist and anticancer activities. These experiments led to the identification of 9-epipolygodial, which has antiproliferative potency significantly exceeding that of polygodial. 9-Epipolygodial was found to maintain potency against apoptosis-resistant cancer cells as well as those displaying the multidrug-resistant (MDR) phenotype. In addition, the chemical feasibility for the previously proposed mechanism of action of polygodial, involving the formation of a Paal-Knorr pyrrole with a lysine residue on the target protein, was demonstrated by the synthesis of a stable polygodial pyrrole derivative. These studies reveal rich chemical and biological properties associated with polygodial and its direct derivatives. These compounds should inspire further work in this area aimed at the development of new pharmacological agents, or the exploration of novel mechanisms of covalent modification of biological molecules with natural products.
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Affiliation(s)
- Ramesh Dasari
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, 78666, USA
| | - Annelise De Carvalho
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, 1050, Brussels, Belgium
| | - Derek C Medellin
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, 78666, USA
| | - Kelsey N Middleton
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, 78666, USA
| | - Frédéric Hague
- Laboratoire de Physiologie Cellulaire et Moléculaire, Faculté des Sciences, Université de Picardie Jules Verne, 80000, Amiens, France
| | - Marie N M Volmar
- Neurosurgical Research, University Clinics Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Liliya V Frolova
- Departments of Chemistry and Biology, New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, NM, 87801, USA
| | - Mateus F Rossato
- Center of Innovation and Preclinical Studies, Av. Luiz Boiteux Piazza 1302, Cachoeira do Bom Jesus, Florianópolis, SC, 88056-000, Brazil
- Department of Pharmacology, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Jorge J De La Chapa
- Department of Comprehensive Dentistry, Cancer Therapy and Research Center, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | - Nicholas F Dybdal-Hargreaves
- Department of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | - Akshita Pillai
- Department of Biomedical Sciences, College of Medicine, University of Illinois, 1601 Parkview Ave., Rockford, IL, 61107, USA
| | - Véronique Mathieu
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, 1050, Brussels, Belgium
| | - Snezna Rogelj
- Departments of Chemistry and Biology, New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, NM, 87801, USA
| | - Cara B Gonzales
- Department of Comprehensive Dentistry, Cancer Therapy and Research Center, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | - João B Calixto
- Center of Innovation and Preclinical Studies, Av. Luiz Boiteux Piazza 1302, Cachoeira do Bom Jesus, Florianópolis, SC, 88056-000, Brazil
- Department of Pharmacology, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126, Napoli, Italy
| | - Mathieu Gautier
- Laboratoire de Physiologie Cellulaire et Moléculaire, Faculté des Sciences, Université de Picardie Jules Verne, 80000, Amiens, France
| | - Gnanasekar Munirathinam
- Department of Biomedical Sciences, College of Medicine, University of Illinois, 1601 Parkview Ave., Rockford, IL, 61107, USA
| | - Rainer Glass
- Neurosurgical Research, University Clinics Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Patricia Burth
- Departamento de Biologia Celular e Molecular, Instituto de Biologia, Universidade Federal Fluminense, Outeiro de São João Batista, s/n Campus do Valonguinho, Centro-Niterói, RJ, 24020-140, Brazil
| | - Stephen C Pelly
- Department of Chemistry and Polymer Science, Stellenbosch University, Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
| | - Willem A L van Otterlo
- Department of Chemistry and Polymer Science, Stellenbosch University, Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
| | - Robert Kiss
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, 1050, Brussels, Belgium
| | - Alexander Kornienko
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, 78666, USA.
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Vivekanand T, Sandhya T, Vinoth P, Nagarajan S, Maheswari CU, Sridharan V. N-(2-Aminobenzylidene)-4-methylanilines—stable and cheap alternate for 2-aminobenzaldehydes: concise synthesis of 3-unsubstituted-2-aroylindoles. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.07.073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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38
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Dasari R, De Carvalho A, Medellin DC, Middleton KN, Hague F, Volmar MNM, Frolova LV, Rossato MF, De La Chapa JJ, Dybdal-Hargreaves NF, Pillai A, Kälin RE, Mathieu V, Rogelj S, Gonzales CB, Calixto JB, Evidente A, Gautier M, Munirathinam G, Glass R, Burth P, Pelly SC, van Otterlo WAL, Kiss R, Kornienko A. Wittig derivatization of sesquiterpenoid polygodial leads to cytostatic agents with activity against drug resistant cancer cells and capable of pyrrolylation of primary amines. Eur J Med Chem 2015; 103:226-37. [PMID: 26360047 DOI: 10.1016/j.ejmech.2015.08.047] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 08/22/2015] [Accepted: 08/24/2015] [Indexed: 12/13/2022]
Abstract
Many types of cancer, including glioma, melanoma, non-small cell lung cancer (NSCLC), among others, are resistant to proapoptotic stimuli and thus poorly responsive to current therapies based on the induction of apoptosis in cancer cells. The current investigation describes the synthesis and anticancer evaluation of unique C12-Wittig derivatives of polygodial, a sesquiterpenoid dialdehyde isolated from Persicaria hydropiper (L.) Delabre. These compounds were found to undergo an unprecedented pyrrole formation with primary amines in a chemical model system, a reaction that could be relevant in the biological environment and lead to the pyrrolation of lysine residues in the target proteins. The anticancer evaluation of these compounds revealed their promising activity against cancer cells displaying various forms of drug resistance, including resistance to proapoptotic agents. Mechanistic studies indicated that compared to the parent polygodial, which displays fixative general cytotoxic action against human cells, the C12-Wittig derivatives exerted their antiproliferative action mainly through cytostatic effects explaining their activity against apoptosis-resistant cancer cells. The possibility for an intriguing covalent modification of proteins through a novel pyrrole formation reaction, as well as useful activities against drug resistant cancer cells, make the described polygodial-derived chemical scaffold an interesting new chemotype warranting thorough investigation.
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Affiliation(s)
- Ramesh Dasari
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Annelise De Carvalho
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Derek C Medellin
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Kelsey N Middleton
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA
| | - Frédéric Hague
- Laboratoire de Physiologie Cellulaire et Moléculaire, Faculté des Sciences, Université de Picardie Jules Verne, Amiens, France
| | - Marie N M Volmar
- Neurosurgical Research, University Clinics Munich, Marchioninistr. 15, 81377 Munich, Germany
| | - Liliya V Frolova
- Department of Chemistry, New Mexico Tech, 801 Leroy Place, Socorro, NM 87801, USA; Department of Biology, New Mexico Tech, 801 Leroy Place, Socorro, NM 87801, USA
| | - Mateus F Rossato
- Center of Innovation and Preclinical Studies, Luiz Boiteux Piazza 1302, Cachoeira do Bom Jesus, Brazil; Department of Pharmacology, UFSC, Florianópolis SC 88.056-000, Brazil
| | - Jorge J De La Chapa
- Department of Comprehensive Dentistry, Cancer Therapy and Research Center, UTHSCSA, San Antonio, TX 78229, USA
| | | | - Akshita Pillai
- Department of Biomedical Sciences, University of Illinois, College of Medicine, 1601 Parkview Ave, Rockford, IL 61107, USA
| | - Roland E Kälin
- Neurosurgical Research, University Clinics Munich, Marchioninistr. 15, 81377 Munich, Germany
| | - Véronique Mathieu
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Snezna Rogelj
- Department of Chemistry, New Mexico Tech, 801 Leroy Place, Socorro, NM 87801, USA; Department of Biology, New Mexico Tech, 801 Leroy Place, Socorro, NM 87801, USA
| | - Cara B Gonzales
- Department of Comprehensive Dentistry, Cancer Therapy and Research Center, UTHSCSA, San Antonio, TX 78229, USA
| | - João B Calixto
- Center of Innovation and Preclinical Studies, Luiz Boiteux Piazza 1302, Cachoeira do Bom Jesus, Brazil; Department of Pharmacology, UFSC, Florianópolis SC 88.056-000, Brazil
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Mathieu Gautier
- Laboratoire de Physiologie Cellulaire et Moléculaire, Faculté des Sciences, Université de Picardie Jules Verne, Amiens, France
| | - Gnanasekar Munirathinam
- Department of Biomedical Sciences, University of Illinois, College of Medicine, 1601 Parkview Ave, Rockford, IL 61107, USA
| | - Rainer Glass
- Neurosurgical Research, University Clinics Munich, Marchioninistr. 15, 81377 Munich, Germany
| | - Patricia Burth
- Departamento de Biologia Celular e Molecular, Instituto de Biologia, Universidade Federal Fluminense, Outeiro de São João Batista, s/n° Campus do Valonguinho, Centro-Niterói, RJ 24020-140, Brazil
| | - Stephen C Pelly
- Department of Chemistry and Polymer Science, Stellenbosch University, Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
| | - Willem A L van Otterlo
- Department of Chemistry and Polymer Science, Stellenbosch University, Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
| | - Robert Kiss
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, Brussels, Belgium
| | - Alexander Kornienko
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX 78666, USA.
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Ai Y, Hu Y, Kang F, Lai Y, Jia Y, Huang Z, Peng S, Ji H, Tian J, Zhang Y. Synthesis and Biological Evaluation of Novel Olean-28,13β-lactams as Potential Antiprostate Cancer Agents. J Med Chem 2015; 58:4506-20. [PMID: 25992974 DOI: 10.1021/jm5020023] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
γ-Lactam is an important structural motif in a large number of biologically active natural products and synthetic small pharmaceutical molecules. However, there is currently no effective approach to construct γ-lactam ring directly from natural rigid polycyclic amides. Herein, we report a facile methodology for synthesis of a new group of olean-28,13β-lactams (10a-j) from their corresponding amides, promoted by an easily available reagent 2,3-dichloro-5,6-dicyanobenzoquinone (DDQ), through an intramolecular dehydrogenative C-N coupling reaction via a radical ion mechanism. Biological evaluation indicated that the most active lactam 10h displayed potent antiproliferative activity against human cancer cells but 13.84- to 16.92-fold less inhibitory activity on noncancer cells in vitro. In addition, 10h significantly inhibited the growth of implanted prostate cancer in vivo. Furthermore, 10h induced cell cycle arrest and apoptosis and down-regulated the AKT/mTOR signaling in DU-145 cells. Finally, 10h was more stable in rat plasma and human liver microsomes than CDDO-Me and had little hERG channel inhibitory activity. Collectively, 10h may be a potential antiprostate cancer agent for further investigation.
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Affiliation(s)
- Yong Ai
- †State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China.,‡Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Yang Hu
- †State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Fenghua Kang
- †State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China.,‡Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Yisheng Lai
- †State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China.,‡Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Yanju Jia
- †State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Zhangjian Huang
- †State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China.,‡Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Sixun Peng
- †State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China.,‡Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Hui Ji
- †State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jide Tian
- §Department of Molecular and Medical Pharmacology, University of California, Los Angeles, California 90095, United States
| | - Yihua Zhang
- †State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China.,‡Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, Nanjing 210009, P. R. China
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40
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Aksenov AV, Aksenov NA, Dzhandigova ZV, Aksenov DA, Rubin M. Nitroalkenes as surrogates for cyanomethylium species in a one-pot synthesis of non-symmetric diarylacetonitriles. RSC Adv 2015. [DOI: 10.1039/c5ra20953f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nitroalkenes were used as synthetic equivalents of the cyanomethylium cation in a modular, one-pot synthesis of 2-(3-indolyl)acetonitriles and 2,2-diarylacetonitriles involving electrophilic functionalization of aromatic and heteroaromatic C–H bond.
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Affiliation(s)
- Alexander V. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Nicolai A. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Zarema V. Dzhandigova
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Dmitrii A. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Michael Rubin
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
- Department of Chemistry
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41
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Aksenov AV, Aksenov NA, Orazova NA, Aksenov DA, Dmitriev MV, Rubin M. Direct metal-free synthesis of diarylamines from 2-nitropropane via the twofold C–H functionalization of arenes. RSC Adv 2015. [DOI: 10.1039/c5ra17668a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Synthesis of symmetric diarylamines via a twofold intermolecular electrophilic C–H functionalization of electron-rich arenes by umpolung-activated nitroalkane in polyphosphoric acid is demonstrated.
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Affiliation(s)
- Alexander V. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Nicolai A. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Naila A. Orazova
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Dmitrii A. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Maksim V. Dmitriev
- Department of Chemistry
- Perm State University
- Perm 614990
- Russian Federation
| | - Michael Rubin
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
- Department of Chemistry
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42
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Aksenov NA, Aksenov AV, Nadein ON, Aksenov DA, Smirnov AN, Rubin M. One-pot synthesis of benzoxazoles via the metal-free ortho-C–H functionalization of phenols with nitroalkanes. RSC Adv 2015. [DOI: 10.1039/c5ra15128g] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
PPA-activated nitroalkanes are employed in the design of a one-pot cascade transformation involvingortho-C–H functionalization, by Beckman rearrangement, and condensation to produce benzoxazoles and benzobisoxazoles directly from phenols.
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Affiliation(s)
- Nicolai A. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Alexander V. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Oleg N. Nadein
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Dmitrii A. Aksenov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Alexander N. Smirnov
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
| | - Michael Rubin
- Department of Chemistry
- North Caucasus Federal University
- Stavropol 355009
- Russian Federation
- Department of Chemistry
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