1
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Kostin RK, Marshavin AS. Pyrazoles, isoxazoles, and 1,2,3-triazoles as analogs of the natural cytostatic combretastatin A-4: efficient routes of synthesis, tubulin inhibition, and cytotoxicity. Chem Heterocycl Compd (N Y) 2022. [DOI: 10.1007/s10593-021-03025-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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2
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Costantini M, Mendoza A. Modular Enantioselective Synthesis of cis-Cyclopropanes through Self-Sensitized Stereoselective Photodecarboxylation with Benzothiazolines. ACS Catal 2021; 11:13312-13319. [PMID: 34765283 PMCID: PMC8576787 DOI: 10.1021/acscatal.1c03949] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/12/2021] [Indexed: 12/20/2022]
Abstract
Chiral cis-cyclopropanes are strained rigid analogues of alkyl chains, whose study and application are limited by their difficult synthesis. A modular approach from olefin materials is enabled by the discovery of the electron donor-acceptor (EDA) interaction between 2-substituted benzothiazolines and N-hydroxyphthalimide esters. These complexes are activated by visible light without photocatalysts, and the benzothiazoline reagent plays a triple role as a photoreductant, a stereoselective hydrogen-atom donor, and a Brønsted acid. Beyond the enantioselective synthesis of cis-cyclopropanes, these results introduce benzothiazolines as accessible and easily tunable self-sensitized photoreductants.
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Affiliation(s)
- Matteo Costantini
- Department of Organic Chemistry, Arrhenius
Laboratory, Stockholm University, 106 91 Stockholm, Sweden
| | - Abraham Mendoza
- Department of Organic Chemistry, Arrhenius
Laboratory, Stockholm University, 106 91 Stockholm, Sweden
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3
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Menchikov LG, Shulishov EV, Tomilov YV. Recent advances in the catalytic cyclopropanation of unsaturated compounds with diazomethane. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr4982] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The main achievements and development trends of the past 10–15 years related to the catalytic cyclopropanation of unsaturated compounds with diazomethane are integrated and analyzed. The attention is focused on the most efficient catalysts based on palladium compounds. Data on the effects of substrate structure and nature of catalyst components on the regio- and stereoselectivity of these reactions are systematized. Characteristic features of safe methods for diazomethane generation are considered, including the use of membrane technologies and continuous-flow and in situ preparation methods, which have prospects for industrial application.
The bibliography includes 281 references.
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4
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Brown SJ, Drummond CJ, Marchand J, Marcuccio SM, Stockton KP, Greaves TL. Physicochemical characterisation of novel tetrabutylammonium aryltrifluoroborate ionic liquids. Phys Chem Chem Phys 2020; 22:23374-23384. [PMID: 33047742 DOI: 10.1039/d0cp03994b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
While there have been many studies on the physicochemical characterisation of ILs, little work has previously been reported on the properties unique to the trifluoroborate anion. Here we have characterised the thermal properties, viscosity, liquid nanostructure and intramolecular interactions of 15 novel aryltrifluoroborate ILs. These ILs all contained a tetrabutylammonium cation paired with either meta- or para-substituted aryltrifluoroborate anions, or di-anionic substituted aryltrifluroborate anions. It was found that of the 15 samples analysed, 4 would technically be considered molten salts as they have melting points greater than 100 °C. Overall the structure-property relationship trends of these samples are similar to those previously reported for alkyl and perfluoroalkyltrifluoroborate ILs which contained K+ or Cs+ cations, with the big difference being the ILs in this study having considerably lower melting points.
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Affiliation(s)
- Stuart J Brown
- College of Science, Engineering and Health, RMIT University, 124 La Trobe Street, Melbourne, Victoria, Australia.
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5
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Wang Y, Yao Y, Zhu HL, Duan Y. Butterfly Structure: A Privileged Scaffold Targeting Tubulin-Colchicine Binding Site. Curr Top Med Chem 2020; 20:1505-1508. [PMID: 32543362 DOI: 10.2174/1568026620999200616132924] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/11/2020] [Accepted: 06/11/2020] [Indexed: 12/17/2022]
Abstract
:
Butterfly-shaped structure, as a novel scaffold with an attractive and certain shape, has been
widely used in new drug discovery. Tubulin, composing of α- and β-tubulin heterodimers, plays a key
role in mitosis and cell division which are regarded as an excellent target for cancer therapy. Currently, a
series of butterfly shape diaryl heterocyclic compounds have been reported with strong potential against
the tubulin-colchicine binding site. It is with one ring buried in the β subunit, another ring interacts with
the α subunit and the main body is located in the flat pocket. Here, we firstly introduce the concept of
butterfly structure for the tubulin inhibitors, focusing on the latest advancements in a variety of molecules
bearing butterfly structure, and then highlight the challenges and future direction of butterfly structure-
based tubulin-colchicine binding site inhibitors.
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Affiliation(s)
- Yingge Wang
- School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, China
| | - Yongfang Yao
- School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, China
| | - Hai-Liang Zhu
- Henan Provincial Key Laboratory Of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou 450018, China
| | - Yongtao Duan
- Henan Provincial Key Laboratory Of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou 450018, China
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6
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Grygorenko OO, Moskvina VS, Hryshchuk OV, Tymtsunik AV. Cycloadditions of Alkenylboronic Derivatives. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1707159] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The literature on cycloaddition reactions of boron-containing alkenes is surveyed with 132 references. The data are categorized according to the reaction type ([2+1], [2+2], [3+2], [4+2], and [4+3] cycloadditions). The cyclopropanation and the Diels–Alder reactions of alkenylboronic derivatives have been studied more or less comprehensively, and for some substrates, they can be considered as convenient methods for the rapid regio- and stereoselective construction of even complex cyclic systems. Other types of the cycloadditions, as well as mechanistic aspects of the processes, have been addressed less thoroughly in the previous works.1 Introduction2 [2+1] Cycloaddition2.1 Cyclopropanation2.1.1 With Methylene Synthetic Equivalents2.1.2 With Substituted Carbenoids2.2 Epoxidation2.3 Aziridination3 [2+2] Cycloaddition4 [3+2] Cycloaddition4.1 With Nitrile Oxides4.2 With Diazoalkanes4.3 With Nitrones4.4 With Azomethine Ylides5 [4+2] Cycloaddition6 [4+3] Cycloaddition7 Conclusions and Outlook
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Affiliation(s)
| | - Viktoriia S. Moskvina
- Taras Shevchenko National University of Kyiv
- V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, NAS of Ukraine
| | | | - Andriy V. Tymtsunik
- Enamine Ltd
- Faculty of Chemical Technology, National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’
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7
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Malashchuk A, Chernykh AV, Hurmach VV, Platonov MO, Onopchenko O, Zozulya S, Daniliuc CG, Dobrydnev AV, Kondratov IS, Moroz YS, Grygorenko OO. Synthesis, biological evaluation, and modeling studies of 1,3-disubstituted cyclobutane-containing analogs of combretastatin A4. J Mol Struct 2020; 1210:128025. [PMID: 32655187 PMCID: PMC7351177 DOI: 10.1016/j.molstruc.2020.128025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
With the aim of circumventing the adverse cis/trans-isomerization of combretastatin A4 (CA4), a naturally occurring tumor-vascular disrupting agent, we designed novel CA4 analogs bearing 1,3-cyclobutane moiety instead of the cis-stilbene unit of the parent compound. The corresponding cis and trans cyclobutane-containing derivatives were prepared as pure diastereomers. The structure of the target compounds was confirmed by X-ray diffraction study. The title compounds were evaluated for their cytotoxic properties in human cancer cell lines HepG2 (hepatocarcinoma) and SK-N-DZ (neuroblastoma), and the overall activity was found in micromolar range. Molecular docking studies and molecular dynamics simulation within the colchicine binding site of tubulin were in good agreement with the obtained cytotoxicity data.
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Affiliation(s)
- Andrii Malashchuk
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Anton V. Chernykh
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
| | - Vasyl V. Hurmach
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Maxim O. Platonov
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
| | - Oleksandra Onopchenko
- Bienta/Enamine Ltd. (www.bienta.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
| | - Sergey Zozulya
- Bienta/Enamine Ltd. (www.bienta.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Alexey V. Dobrydnev
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Ivan S. Kondratov
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
- Institute of Bioorganic Chemistry & Petrochemistry, NAS of Ukraine, Murmanska Street 1, Kyiv 02660, Ukraine
| | - Yuriy S. Moroz
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
- Chemspace, Ilukstes iela 38-5, Riga, LV-1082, Latvia
| | - Oleksandr O. Grygorenko
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
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8
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Exploring Diverse-Ring Analogues on Combretastatin A4 (CA-4) Olefin as Microtubule-Targeting Agents. Int J Mol Sci 2020; 21:ijms21051817. [PMID: 32155790 PMCID: PMC7084768 DOI: 10.3390/ijms21051817] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 03/02/2020] [Accepted: 03/04/2020] [Indexed: 12/17/2022] Open
Abstract
Combretastatin-4 (CA-4) as a tubulin polymerization inhibitor draws extensive attentions. However, due to its weak stability of cis-olefin and poor metabolic stability, structure modifications on cis-configuration are being performed. In this work, we constructed a series of novel CA-4 analogues with linkers on olefin containing diphenylethanone, cis-locked dihydrofuran, α-substituted diphenylethanone, cyclobutane and cyclohexane on its cis-olefin. Cytotoxic activity of all analogues was measured by an SRB assay. Among them, compound 6b, a by-product in the preparation of diphenylethanone analogues, was found to be the most potent cytotoxic agents against HepG2 cells with IC50 values of less than 0.5 μM. The two isomers of 6b induced cellular apoptosis tested by Annexin V-FITC and propidium iodide (PI) double staining, arrested cells in the G2/M phase by PI staining analysis, and disrupted microtubule network by immunohistochemistry study in HepG2 cells. Moreover, 6b-(E) displayed a dose-dependent inhibition effect for tubulin assembly in in vitro tubulin polymerization assay. In addition, molecular docking studies showed that two isomers of 6b could bind efficiently at colchicine binding site of tubulin similar to CA-4.
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9
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Nowikow C, Fuerst R, Kauderer M, Dank C, Schmid W, Hajduch M, Rehulka J, Gurska S, Mokshyna O, Polishchuk P, Zupkó I, Dzubak P, Rinner U. Synthesis and biological evaluation of cis-restrained carbocyclic combretastatin A-4 analogs: Influence of the ring size and saturation on cytotoxic properties. Bioorg Med Chem 2019; 27:115032. [DOI: 10.1016/j.bmc.2019.07.048] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 07/19/2019] [Accepted: 07/28/2019] [Indexed: 10/26/2022]
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10
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Maguire CJ, Carlson GJ, Ford JW, Strecker TE, Hamel E, Trawick ML, Pinney KG. Synthesis and biological evaluation of structurally diverse α-conformationally restricted chalcones and related analogues. MEDCHEMCOMM 2019; 10:1445-1456. [PMID: 31534659 PMCID: PMC6734540 DOI: 10.1039/c9md00127a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Accepted: 05/27/2019] [Indexed: 12/19/2022]
Abstract
Numerous members of the combretastatin and chalcone families of natural products function as inhibitors of tubulin polymerization through a binding interaction at the colchicine site on β-tubulin. These molecular scaffolds inspired the development of many structurally modified derivatives and analogues as promising anticancer agents. A productive design blueprint that involved molecular hybridization of the pharmacophore moieties of combretastatin A-4 (CA4) and the chalcones led to the discovery of two promising lead molecules referred to as KGP413 and SD400. The corresponding water-soluble phosphate prodrug salts of KGP413 and SD400 selectively damaged tumor-associated vasculature, thus highlighting the potential development of these molecules as vascular disrupting agents (VDAs). These previous studies prompted our current investigation of conformationally restricted chalcones. Herein, we report the synthesis of cyclic chalcones and related analogues that incorporate structural motifs of CA4, and evaluation of their cytotoxicity against human cancer cell lines [NCI-H460 (lung), DU-145 (prostate), and SK-OV-3 (ovarian)]. While these molecules proved inactive as inhibitors of tubulin polymerization (IC50 > 20 μM), eight molecules demonstrated good antiproliferative activity (GI50 < 20 μM) against all three cancer cell lines, and compounds 2j and 2l demonstrated sub-micromolar cytotoxicity. To the best of our knowledge these molecules represent the most potent (based on GI50) cyclic chalcones known to date, and are promising lead molecules for continued investigation.
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Affiliation(s)
- Casey J Maguire
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place #97348 , Waco , TX 76798-7348 , USA . ; Tel: +1 (254) 710 4117
| | - Graham J Carlson
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place #97348 , Waco , TX 76798-7348 , USA . ; Tel: +1 (254) 710 4117
| | - Jacob W Ford
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place #97348 , Waco , TX 76798-7348 , USA . ; Tel: +1 (254) 710 4117
| | - Tracy E Strecker
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place #97348 , Waco , TX 76798-7348 , USA . ; Tel: +1 (254) 710 4117
| | - Ernest Hamel
- Screening Technologies Branch , Developmental Therapeutics Program , Division of Cancer Treatment and Diagnosis , National Cancer Institute , Frederick National Laboratory for Cancer Research , National Institutes of Health , Frederick , MD 21702 , USA
| | - Mary Lynn Trawick
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place #97348 , Waco , TX 76798-7348 , USA . ; Tel: +1 (254) 710 4117
| | - Kevin G Pinney
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place #97348 , Waco , TX 76798-7348 , USA . ; Tel: +1 (254) 710 4117
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11
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Medicinal chemistry of vicinal diaryl scaffold: A mini review. Eur J Med Chem 2018; 162:1-17. [PMID: 30396033 DOI: 10.1016/j.ejmech.2018.10.054] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 10/19/2018] [Accepted: 10/22/2018] [Indexed: 12/22/2022]
Abstract
The privileged structures have been widely used as a valuable template in new drug discovery. 1,2-Diaryl or vicinal diaryl is a simple scaffold found in many drugs and naturally occurring compounds. From synthetic point of view, the vicinal diaryl derivatives are easily accessible due to their facile and expedient syntheses. These scaffolds have shown numerous interesting pharmacological activities against various diseases with lot of clinical potentials. This review aims to highlight the evidence of vicinal diaryl motif as a privileged scaffold in COX-2 inhibitors and CA-4 analogs.
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12
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Tripodi F, Dapiaggi F, Orsini F, Pagliarin R, Sello G, Coccetti P. Synthesis and biological evaluation of new 3-amino-2-azetidinone derivatives as anti-colorectal cancer agents. MEDCHEMCOMM 2018; 9:843-852. [PMID: 30108973 DOI: 10.1039/c8md00147b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 03/30/2018] [Indexed: 12/16/2022]
Abstract
Several synthetic combretastatin A4 (CA-4) derivatives were recently prepared to increase the drug efficacy and stability of the natural product isolated from the South African tree Combretum caffrum. A group of ten 3-amino-2-azetidinone derivatives, as combretastatin A4 analogues, was selected through docking experiments, synthesized and tested for their anti-proliferative activity against the colon cancer SW48 cell line. These molecules, through the formation of amide bonds in position 3, allow the synthesis of various derivatives that can modulate the activity with great resistance to hydrolytic conditions. The cyclization to obtain the 3-aminoazetidinone ring is highly diastereoselective and provides a trans biologically active isomer under mild reaction conditions with better yields than the 3-hydroxy-2-azetidinone synthesis. All compounds showed IC50 values ranging between 14.0 and 564.2 nM, and the most active compound showed inhibitory activity against tubulin polymerization in vitro, being a potential therapeutic agent against colon cancer.
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Affiliation(s)
- Farida Tripodi
- Department of Biotechnology and Biosciences , University of Milano-Bicocca , Milan , Italy .
| | | | - Fulvia Orsini
- Department of Chemistry , University of Milano , Milano , Italy . ;
| | | | - Guido Sello
- Department of Chemistry , University of Milano , Milano , Italy . ;
| | - Paola Coccetti
- Department of Biotechnology and Biosciences , University of Milano-Bicocca , Milan , Italy .
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13
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Song MY, Cao CY, He QR, Dong QM, Li D, Tang JJ, Gao JM. Constructing novel dihydrofuran and dihydroisoxazole analogues of isocombretastatin-4 as tubulin polymerization inhibitors through [3+2] reactions. Bioorg Med Chem 2017; 25:5290-5302. [PMID: 28803799 DOI: 10.1016/j.bmc.2017.07.048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 07/25/2017] [Accepted: 07/26/2017] [Indexed: 12/19/2022]
Abstract
[3+2] reactions play a key role in constructing various pharmaceutical moleculars. In this study, using Mn(OAc)3 mediated and 1,3-dipolar [3+2] cyclization reactions, 38 novel dihydrofuran and dihydroisoxazole analogues of isoCA-4 were synthesized as inhibitors of tubulin polymerization. Among them, compound 6g was found to be the most potent cytotoxic agents against PC-3 cells with IC50 value of 0.47μM, and compound 5p exhibted highest activity on HeLa cells with IC50 vaule of 2.32µM. Tubulin polymerization assay revealed that 6g was a dose-dependent and effective inhibitor of tubulin assembly. Immunohistochemistry studies and cell cycle distribution analysis indicated that 6g severely disrupted microtubule network and significantly arrested most cells in the G2/M phase of the cell cycle in PC-3 cells. In addition, molecular docking studies showed that two chiral isomers of 6g can bind efficiently and similarly at colchicine binding site of tubulin.
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Affiliation(s)
- Ming-Yu Song
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, PR China
| | - Chen-Yu Cao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, PR China
| | - Qiu-Rui He
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, PR China
| | - Qing-Miao Dong
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, PR China
| | - Ding Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, PR China
| | - Jiang-Jiang Tang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, PR China.
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, PR China.
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14
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Herlé B, Holstein PM, Echavarren AM. Stereoselective cis-Vinylcyclopropanation via a Gold(I)-Catalyzed Retro-Buchner Reaction under Mild Conditions. ACS Catal 2017; 7:3668-3675. [PMID: 28503355 PMCID: PMC5424441 DOI: 10.1021/acscatal.7b00737] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 04/17/2017] [Indexed: 01/16/2023]
Abstract
![]()
A highly
stereoselective gold(I)-catalyzed cis-vinylcyclopropanation
of alkenes has been developed. Allylic gold
carbenes, generated via a retro-Buchner reaction of 7-alkenyl-1,3,5-cycloheptatrienes,
react with alkenes to form vinylcyclopropanes. The gold(I)-catalyzed
retro-Buchner reaction of these substrates proceeds by simple heating
at a temperature much lower than that required for the reaction of
7-aryl-1,3,5-cycloheptatrienes (75 °C vs 120 °C). A newly
developed Julia–Kocienski reagent enables the synthesis of
the required cycloheptatriene derivatives in one step from readily
available aldehydes or ketones. On the basis of mechanistic investigations,
a stereochemical model for the cis selectivity was
proposed. An unprecedented gold-catalyzed isomerization of cis- to trans-cyclopropanes has also been
discovered and studied by DFT calculations.
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Affiliation(s)
- Bart Herlé
- Institute
of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Philipp M. Holstein
- Institute
of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Antonio M. Echavarren
- Institute
of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Departament
de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain
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15
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Synthesis, resolution and biological evaluation of cyclopropyl analogs of abscisic acid. Bioorg Med Chem 2015; 23:6210-7. [PMID: 26296912 DOI: 10.1016/j.bmc.2015.07.042] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 07/20/2015] [Accepted: 07/21/2015] [Indexed: 11/23/2022]
Abstract
cis-2,3-Cyclopropanated abscisic acid (cis-CpABA) has high photostability and good ABA-like activity. To further investigate its activity and action mechanism, 2S,3S-2,3-cyclopropanated ABA (3a) and 2R,3R-2,3-cyclopropanated ABA (3b) were synthesized. Bioassay showed that 3a displayed higher inhibitory activity in germination than that of 3b and ABA at the concentration of 3.0 μM, but 3a and 3b had much weaker inhibitory activity in inhibition seedling growth compared to ABA. The study of photostability revealed that 3a and 3b showed high stability under UV light exposure, which were 4 times and 3 times greater than (±)-ABA, respectively. Action mechanism study showed that 3a presented higher inhibition on phosphatase activity of HAB1 than 3b, although they all inferior to ABA. Molecular docking studies of 3a, 3b and ABA receptor PYL10 were agreement with the bioassay data and confirmed the importance of the configuration of the 2,3-cyclopropyl ABA analogs for their bioactivity in somewhat. This study provides a new approach for the design of ABA analogs, and the results validated structure-based design for this target class.
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16
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Xie JS, Hu XY, Shan ZX, Zhou ZQ. A Straightforward and Practical Approach to Chiral Inducer: (2R,3R)-1,4-Dimethoxy-1,1,4,4-tetraphenylbutane-2,3-diol. Aust J Chem 2015. [DOI: 10.1071/ch14505] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A straightforward and practical access to chiral inducer (2R,3R)-1,4- dimethoxyl-1,1,4,4-tetraphenyl-2,3-diol has been developed. It is based on highly regioselective 2,3-cyclosulfitation of (2R,3R)-1,1,4,4-tetraphenyl-butanetetraol, in which selective protection of the secondary hydroxyls and chlorination of the tertiary hydroxyls of (2R,3R)-1,1,4,4-tetraphenyl-butanetetraol are accomplished via one step. In the preparation, methanol was used as a methylating reagent and common alkali liquor was used for cleavage of the protection group. It may be one of the most straightforward and practical syntheses of the title compound.
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Recent developments in tubulin polymerization inhibitors: An overview. Eur J Med Chem 2014; 87:89-124. [DOI: 10.1016/j.ejmech.2014.09.051] [Citation(s) in RCA: 210] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 09/11/2014] [Accepted: 09/14/2014] [Indexed: 12/11/2022]
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Baytas SN, Inceler N, Yilmaz A, Olgac A, Menevse S, Banoglu E, Hamel E, Bortolozzi R, Viola G. Synthesis, biological evaluation and molecular docking studies of trans-indole-3-acrylamide derivatives, a new class of tubulin polymerization inhibitors. Bioorg Med Chem 2014; 22:3096-104. [PMID: 24816066 PMCID: PMC4091680 DOI: 10.1016/j.bmc.2014.04.027] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 04/11/2014] [Accepted: 04/15/2014] [Indexed: 11/24/2022]
Abstract
In this study, we synthesized a series of trans-indole-3-acrylamide derivatives (3a-k) and investigated their activity for inhibition of cell proliferation against five human cancer cell lines (HeLa, MCF7, MDA-MB-231, Raji and HL-60) by MTT assay. Compound 3e showed significant antiproliferative activity against both the Raji and HL-60 cell lines with IC50 values of 9.5 and 5.1 μM, respectively. Compound 3e also exhibited moderate inhibitory activity on tubulin polymerization (IC50=17 μM). Flow cytometric analysis of cultured cells treated with 3e also demonstrated that the compound caused cell cycle arrest at the G2/M phase in HL-60 and HeLa cells. Moreover, 3e, the most active compound, caused an apoptotic cell death through the activation of caspase-3. Docking simulations suggested that 3e binds to the colchicine site of tubulin.
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Affiliation(s)
- Sultan Nacak Baytas
- Division of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, 06330 Etiler, Ankara, Turkey.
| | - Nazan Inceler
- Division of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, 06330 Etiler, Ankara, Turkey
| | - Akin Yilmaz
- Department of Medical Biology and Genetics, Faculty of Medicine, Gazi University, 06500 Besevler, Ankara, Turkey
| | - Abdurrahman Olgac
- Division of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, 06330 Etiler, Ankara, Turkey
| | - Sevda Menevse
- Department of Medical Biology and Genetics, Faculty of Medicine, Gazi University, 06500 Besevler, Ankara, Turkey
| | - Erden Banoglu
- Division of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, 06330 Etiler, Ankara, Turkey
| | - Ernest Hamel
- Screening Technologies Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, Frederick National Laboratory for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, United States
| | - Roberta Bortolozzi
- Department of Women's and Children's Health, Laboratory of Oncohematology, University of Padova, 35128 Padova, Italy
| | - Giampietro Viola
- Department of Women's and Children's Health, Laboratory of Oncohematology, University of Padova, 35128 Padova, Italy
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Chang MY, Chen YC, Lin SY, Chan CK. One-pot synthesis of sulfonyl (E)-stilbenes by nitrobenzene-mediated dimerizative desulfonation of benzylic sulfones. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.01.045] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Goutham K, Nagaraju V, Suresh S, Raghavaiah P, Karunakar GV. Reaction of N-propargylic β-enaminones with acetylene dicarboxylates: catalyst-free synthesis of 3-azabicyclo[4.1.0]hepta-2,4-dienes. RSC Adv 2014. [DOI: 10.1039/c4ra00136b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Catalyst- and base-free synthesis of 3-azabicyclo[4.1.0]hepta-2,4-dienes in one pot operation is described.
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Affiliation(s)
- Kommuru Goutham
- Crop protection Chemicals Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad, India
- Academy of Scientific and Innovative Research
- New Delhi, India
| | - Vemu Nagaraju
- Crop protection Chemicals Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad, India
| | - Surisetti Suresh
- Organic and Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad, India
| | | | - Galla V. Karunakar
- Crop protection Chemicals Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad, India
- Academy of Scientific and Innovative Research
- New Delhi, India
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Hugentobler KG, Rebolledo F. Enantioselective bacterial hydrolysis of amido esters and diamides derived from (±)-trans-cyclopropane-1,2-dicarboxylic acid. Org Biomol Chem 2014; 12:615-23. [DOI: 10.1039/c3ob42066c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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