1
|
de Jesus IS, Trindade Gomes A, Sande I, Cunha S. Three-Component Synthesis of 1-Substituted 5-Aminotetrazoles Promoted by Bismuth Nitrate. J Org Chem 2024; 89:14279-14290. [PMID: 39269756 DOI: 10.1021/acs.joc.4c01727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2024]
Abstract
A nontoxic bismuth-promoted multicomponent synthesis of 5-aminotetrazoles and bistetrazoles is reported. The reaction of phenyl isothiocyanate, NaN3, and amine (primary aliphatic, aromatic, and aliphatic diamine) promoted by Bi(NO3)3·5H2O under microwave heating affords good yields, short reaction times, simple workup, and purification without column chromatography. A set of diagnostic 1H NMR signals was identified as a guide for quickly elucidating the exclusive (or main) regioisomer formed, with the stronger electron donor group located at heterocyclic nitrogen 1. This regioselectivity is strongly dependent on the electronic density of the amine. It is opposite to that obtained by several thiourea desulfurization methods promoted by thiophilic metals and metal-free protocols.
Collapse
Affiliation(s)
- Iva S de Jesus
- Instituto de Química, Universidade Federal da Bahia, Campus de Ondina, Salvador, Bahia 40170-115, Brazil
| | - Amenson Trindade Gomes
- Instituto de Química, Universidade Federal da Bahia, Campus de Ondina, Salvador, Bahia 40170-115, Brazil
| | - Igor Sande
- Instituto de Química, Universidade Federal da Bahia, Campus de Ondina, Salvador, Bahia 40170-115, Brazil
| | - Silvio Cunha
- Instituto de Química, Universidade Federal da Bahia, Campus de Ondina, Salvador, Bahia 40170-115, Brazil
- Instituto Nacional de Ciência e Tecnologia - INCT em Energia e Ambiente, Campus Ondina, Salvador, Bahia 40170-290, Brazil
| |
Collapse
|
2
|
Shetgaonkar SE, Jothish S, Dohi T, Singh FV. Iodine(V)-Based Oxidants in Oxidation Reactions. Molecules 2023; 28:5250. [PMID: 37446912 DOI: 10.3390/molecules28135250] [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: 06/15/2023] [Revised: 07/04/2023] [Accepted: 07/04/2023] [Indexed: 07/15/2023] Open
Abstract
The chemistry of hypervalent iodine reagents has now become quite valuable due to the reactivity of these compounds under mild reaction conditions and their resemblance in chemical properties to transition metals. The environmentally friendly nature of these reagents makes them suitable for Green Chemistry. Reagents with a dual nature, such as iodine(III) reagents, are capable electrophiles, while iodine(V) reagents are known for their strong oxidant behavior. Various iodine(V) reagents including IBX and DMP have been used as oxidants in organic synthesis either in stoichiometric or in catalytic amounts. In this review article, we describe various oxidation reactions induced by iodine(V) reagents reported in the past decade.
Collapse
Affiliation(s)
- Samata E Shetgaonkar
- School of Chemical Sciences, Goa University, Taleigao Plateau 403206, Goa, India
| | - Subhiksha Jothish
- Chemistry Division, School of Advanced Sciences (SAS), Vellore Institute of Technology, Chennai 600127, Tamil Nadu, India
| | - Toshifumi Dohi
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu 525-0058, Shiga, Japan
| | - Fateh V Singh
- Chemistry Division, School of Advanced Sciences (SAS), Vellore Institute of Technology, Chennai 600127, Tamil Nadu, India
| |
Collapse
|
3
|
Abdollahi F, Ghaderi A. Copper‐catalyzed synthesis of
α
‐ketothioamides from ketones. J CHIN CHEM SOC-TAIP 2023. [DOI: 10.1002/jccs.202200520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Affiliation(s)
- Fatemeh Abdollahi
- Department of Chemistry, College of Sciences University of Hormozgan Bandar Abbas Iran
| | - Arash Ghaderi
- Department of Chemistry, College of Sciences University of Hormozgan Bandar Abbas Iran
| |
Collapse
|
4
|
Kale AD, Dalal DS. Catalyst‐ and Solvent‐Free Thioamidation of Aromatic Aldehydes through a Willgerodt‐Kindler Reaction. ChemistrySelect 2022. [DOI: 10.1002/slct.202203497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Arun D. Kale
- Department of Organic Chemistry School of Chemical Sciences Kavayitri Bahinabai Chaudhari North Maharashtra University Jalgaon 425 001, MS India
| | - Dipak S. Dalal
- Department of Organic Chemistry School of Chemical Sciences Kavayitri Bahinabai Chaudhari North Maharashtra University Jalgaon 425 001, MS India
| |
Collapse
|
5
|
Lim JH, Baek SE, Lad BS, Kim J. Synthesis of 2-Imino-1,3,4-oxadiazolines from Acylhydrazides and Isothiocyanates via Aerobic Oxidation and a DMAP-Mediated Annulation Sequence. ACS OMEGA 2022; 7:28148-28159. [PMID: 35990423 PMCID: PMC9386851 DOI: 10.1021/acsomega.2c02323] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 07/18/2022] [Indexed: 05/27/2023]
Abstract
In this work, an efficient synthesis of 2-imino-1,3,4-oxadiazolines from acylhydrazides and isothiocyanates is described. In the presence of 4-dimethylaminopyridine (DMAP) and molecular oxygen, various 2-imino-1,3,4-oxadiazolines were produced in good to high yields. The developed method showed a broad substrate scope and was effective on the gram scale. On the basis of the mechanistic studies and previous literature, it was proposed that the mechanism consists of an aerobic oxidation of acylhydrazides facilitated by DMAP and isothiocyanates, followed by a DMAP-mediated annulation of the in situ generated acyldiazenes with isothiocyanates.
Collapse
|
6
|
Hawryluk N, Robinson D, Shen Y, Kyne G, Bedore M, Menon S, Canan S, von Geldern T, Townson S, Gokool S, Ehrens A, Koschel M, Lhermitte-Vallarino N, Martin C, Hoerauf A, Hernandez G, Dalvie D, Specht S, Hübner MP, Scandale I. Discovery of Substituted Di(pyridin-2-yl)-1,2,4-thiadiazol-5-amines as Novel Macrofilaricidal Compounds for the Treatment of Human Filarial Infections. J Med Chem 2022; 65:11388-11403. [PMID: 35972896 PMCID: PMC9421654 DOI: 10.1021/acs.jmedchem.2c00960] [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] [Indexed: 11/29/2022]
Abstract
Filarial diseases, including lymphatic filariasis and onchocerciasis, are considered among the most devastating of all tropical diseases, affecting about 145 million people worldwide. Efforts to control and eliminate onchocerciasis are impeded by a lack of effective treatments that target the adult filarial stage. Herein, we describe the discovery of a series of substituted di(pyridin-2-yl)-1,2,4-thiadiazol-5-amines as novel macrofilaricides for the treatment of human filarial infections.
Collapse
Affiliation(s)
- Natalie Hawryluk
- Bristol Myers Squibb, San Diego, California 92121, United States
| | - Dale Robinson
- Bristol Myers Squibb, San Diego, California 92121, United States
| | - Yixing Shen
- Bristol Myers Squibb, San Diego, California 92121, United States
| | - Graham Kyne
- Zoetis, Kalamazoo, Michigan 49001, United States
| | | | - Sanjay Menon
- Zoetis, Kalamazoo, Michigan 49001, United States
| | - Stacie Canan
- Bristol Myers Squibb, San Diego, California 92121, United States
| | | | - Simon Townson
- Northwick Park Institute for Medical Research, London HA1 3UJ, UK
| | - Suzanne Gokool
- Northwick Park Institute for Medical Research, London HA1 3UJ, UK
| | - Alexandra Ehrens
- Institute for Medical Microbiology, Immunology & Parasitology, University Hospital Bonn, 53127 Bonn, Germany.,German Center for Infection Research (DZIF), partner site Bonn-Cologne, 53127 Bonn, Germany
| | - Marianne Koschel
- Institute for Medical Microbiology, Immunology & Parasitology, University Hospital Bonn, 53127 Bonn, Germany
| | - Nathaly Lhermitte-Vallarino
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Muséum national d'Histoire Naturelle, Paris 75005, France
| | - Coralie Martin
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Muséum national d'Histoire Naturelle, Paris 75005, France
| | - Achim Hoerauf
- Institute for Medical Microbiology, Immunology & Parasitology, University Hospital Bonn, 53127 Bonn, Germany.,German Center for Infection Research (DZIF), partner site Bonn-Cologne, 53127 Bonn, Germany
| | | | - Deepak Dalvie
- Bristol Myers Squibb, San Diego, California 92121, United States
| | - Sabine Specht
- Institute for Medical Microbiology, Immunology & Parasitology, University Hospital Bonn, 53127 Bonn, Germany.,Drugs for Neglected Diseases Initiative, Geneva 1204, Switzerland
| | - Marc Peter Hübner
- Institute for Medical Microbiology, Immunology & Parasitology, University Hospital Bonn, 53127 Bonn, Germany.,German Center for Infection Research (DZIF), partner site Bonn-Cologne, 53127 Bonn, Germany
| | - Ivan Scandale
- Drugs for Neglected Diseases Initiative, Geneva 1204, Switzerland
| |
Collapse
|
7
|
Verma A, Kaur B, Venugopal S, Wadhwa P, Sahu S, Kaur P, Kumar D, Sharma A. Tetrazole: A privileged scaffold for the discovery of anti-cancer agents. Chem Biol Drug Des 2022; 100:419-442. [PMID: 35713482 DOI: 10.1111/cbdd.14103] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 06/02/2022] [Accepted: 06/12/2022] [Indexed: 11/28/2022]
Abstract
Carcinoma, characterized by abnormal growth of cells and tissue, is a ubiquitously leading cause of mortality across the globe due to some carcinogenic factors. Currently, several anticancer agents are commercially available in the global market. However, due to their resistance and cost, researchers are gaining more interest in developing newer novel potential anticancer agents. In the search for new drugs for clinical use, the tetrazole ring system has emerged as an exciting prospect in the optimization studies of promising lead molecules. Among the various heterocyclic agents, tetrazole-containing compounds have shown significant promise in the treatment of a wide range of diseases, particularly cancer. Here, in this review, we focused on several synthetic approaches for the synthesis of tetrazole analogues, their targets for treating cancer along with the biological activity of some of the recently reported tetrazole-containing anticancer agents.
Collapse
Affiliation(s)
- Anil Verma
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Lovely Professional University, Punjab, India
| | - Balwinder Kaur
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Lovely Professional University, Punjab, India
| | - Sneha Venugopal
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Lovely Professional University, Punjab, India
| | - Pankaj Wadhwa
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Lovely Professional University, Punjab, India
| | - Sanjeev Sahu
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Lovely Professional University, Punjab, India
| | - Paranjeet Kaur
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Lovely Professional University, Punjab, India
| | - Deepak Kumar
- Department of Chemistry, School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, India
| | - Ajit Sharma
- Department of Chemistry, School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, India
| |
Collapse
|
8
|
Nguyen TTT, Duong VD, Pham TNN, Duong QT, Nguyen TB. Sulfur–DMSO promoted oxidative coupling of active methylhetarenes with amines: access to amides. Org Biomol Chem 2022; 20:8054-8058. [DOI: 10.1039/d2ob01709a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The sulfur–DMSO couple was found to promote the coupling of active methylhetarenes with amines to yield amides under heating conditions. When 2-methylquinoline was used as the methylhetarene component, the reaction could be catalyzed by Fe, Co and Ni salts.
Collapse
Affiliation(s)
- Thi Thu Tram Nguyen
- Faculty of Basic Sciences, Can Tho University of Medicine and Pharmacy, Vietnam
| | - Viet Dung Duong
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Thi Ngoc Nga Pham
- Faculty of Basic Sciences, Can Tho University of Medicine and Pharmacy, Vietnam
| | - Quoc Thanh Duong
- Faculty of Basic Sciences, Can Tho University of Medicine and Pharmacy, Vietnam
| | - Thanh Binh Nguyen
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av de la Terrasse, 91198 Gif-sur-Yvette, France
| |
Collapse
|
9
|
Kumari S, Kumar R, Mazumder A, Salahuddin, Saxena S, Sharma D, Joshi S, Abdullah MM. Recent updates on Synthetic Strategies and Biological Potential of 1,3,4-oxadiazole: Review. LETT ORG CHEM 2021. [DOI: 10.2174/1570178619666211231110106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
Among the large variety of nitrogen and oxygen-containing heterocycles, 1,3,4-oxadiazole, the scaffold, has attracted considerable attention owing to its ability to show an extensive range of pharmacological actions. According to literature investigations, prepared 1,3,4-oxadiazole and its derivative are pharmacologically significant and consist of a variety of activities, such as anticonvulsant, anticancer, antioxidant, anti-inflammatory, antibacterial, antidiabetic, etc. These heterocyclics are formed mainly by the cyclization reactions of various reactants under diverse reaction circumstances. Therefore, significant efforts of organic chemists have been directed towards the synthesis of new drug candidates containing 1,3,4-oxadiazole subunits connected to an established potential pharmacophore to improve the efficacy and potency. This article aims to highlight recent publications on the various synthesis techniques of 1,3,4-oxadiazole and related compounds over the previous ten years (2011–2021). The purpose of this review is to help researchers by summarizing several synthetic strategies for synthesizing oxadiazole.
Collapse
Affiliation(s)
- Sunita Kumari
- Department of Pharmaceutical Chemistry, Noida Institute of Engineering and Technology, (Pharmacy Institute), Greater Noida, India
| | - Rajnish Kumar
- Department of Pharmaceutical Chemistry, Noida Institute of Engineering and Technology, (Pharmacy Institute), Greater Noida, India
| | - Avijit Mazumder
- Department of Pharmaceutical Chemistry, Noida Institute of Engineering and Technology, (Pharmacy Institute), Greater Noida, India
| | - Salahuddin
- Department of Pharmaceutical Chemistry, Noida Institute of Engineering and Technology, (Pharmacy Institute), Greater Noida, India
| | - Shivani Saxena
- Department of Pharmaceutical Chemistry, Noida Institute of Engineering and Technology, (Pharmacy Institute), Greater Noida, India
| | - Divya Sharma
- Department of Pharmaceutical Chemistry, Noida Institute of Engineering and Technology, (Pharmacy Institute), Greater Noida, India
| | - Sagar Joshi
- Department of Pharmaceutical Chemistry, Noida Institute of Engineering and Technology, (Pharmacy Institute), Greater Noida, India
| | | |
Collapse
|
10
|
Long B, Tian B, Tang Q, Hu X, Han L, Wang Z, Wang C, Wu Y, Yu Y, Gan Z. A KHSO4 mediated facile synthesis of 2-amino-1,3,4-oxadiazole derivatives. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132382] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
11
|
Tantak MP, Malik M, Klingler L, Olson Z, Kumar A, Sadana R, Kumar D. Indolyl-α-keto-1,3,4-oxadiazoles: Synthesis, anti-cell proliferation activity, and inhibition of tubulin polymerization. Bioorg Med Chem Lett 2021; 37:127842. [PMID: 33556575 DOI: 10.1016/j.bmcl.2021.127842] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 01/14/2021] [Accepted: 01/29/2021] [Indexed: 01/29/2023]
Abstract
A series of novel indolyl-α-keto-1,3,4-oxadiazole derivatives have been synthesized by employing molecular iodine-mediated oxidative cyclization of acylhydrazones. In vitro anti cell proliferation activity of these derivatives against various cancer cells lines such as human lymphoblast (U937), leukemia (Jurkat & SB) and human breast (BT474) was investigated. Among the synthesized indolyl-α-keto-1,3,4-oxadiazoles 19a-p, only one compound (19e) exhibited significant antiproliferative activity against a panel of cell lines. The compound 19e with 3,4,5-trimethoxyphenyl motif, endowed strong cytotoxicity against U937, Jurkat, BT474 and SB cancer cells with IC50 values of 7.1, 3.1, 4.1, and 0.8 µM, respectively. Molecular docking studies suggested a potential binding mode for 19e in the colchicine binding site of tubulin. When tested for in vitro tubulin polymerizaton, 19e inhibited tubulin polymezations (IC50 = 10.66 µM) and induced apoptosis through caspase 3/7 activation. Further, the derivative 19e did not cause necrosis when measured using lactate dehydrogenase assay.
Collapse
Affiliation(s)
- Mukund P Tantak
- Department: Department of Chemistry Birla Institute of Technology and Science, Pilani 333 031, India
| | - Monika Malik
- Department: Department of Chemistry Birla Institute of Technology and Science, Pilani 333 031, India
| | - Linus Klingler
- Department: Department of Natural Sciences, University of Houston - Downtown, Houston, TX 77002, USA
| | - Zachary Olson
- Department: Department of Natural Sciences, University of Houston - Downtown, Houston, TX 77002, USA
| | - Anil Kumar
- Department: Department of Chemistry Birla Institute of Technology and Science, Pilani 333 031, India
| | - Rachna Sadana
- Department: Department of Natural Sciences, University of Houston - Downtown, Houston, TX 77002, USA.
| | - Dalip Kumar
- Department: Department of Chemistry Birla Institute of Technology and Science, Pilani 333 031, India.
| |
Collapse
|
12
|
Vankar JK, Gupta A, Jadav JP, Nanjegowda SH, Gururaja GN. The thioamidation of gem-dibromoalkenes in an aqueous medium. Org Biomol Chem 2021; 19:2473-2480. [PMID: 33651057 DOI: 10.1039/d0ob02319a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The direct integration of sulphur and amine groups with 1,1-dibromoalkenes for thioamide synthesis has been achieved in an aqueous medium. The presented green protocol emphasizes the suitability of aqueous media for the thioamidation reaction and enables greater selectivity with synthetic utility. A wide range of thioamides in moderate to excellent yields has been achieved using readily available starting materials, with the use of no organic solvents, catalysts, or additives.
Collapse
Affiliation(s)
- Jigarkumar K Vankar
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar 382030, India.
| | | | | | | | | |
Collapse
|
13
|
Kadagathur M, Shaikh AS, Jadhav GS, Sigalapalli DK, Shankaraiah N, Tangellamudi ND. Cyclodesulfurization: An Enabling Protocol for Synthesis of Various Heterocycles. ChemistrySelect 2021. [DOI: 10.1002/slct.202100201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Manasa Kadagathur
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Arbaz Sujat Shaikh
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Govinda Shivaji Jadhav
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Dilep Kumar Sigalapalli
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Nagula Shankaraiah
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Neelima D. Tangellamudi
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| |
Collapse
|
14
|
Dukanya, Swaroop TR, Rangappa KS, Basappa. Cyclocondensation of Sodium Azide with Methyl N(N),N'-di(tri)substituted Carbamimidothioate : A New Dimension for the Synthesis of 1,5-disubstituted Tetrazoles and Their Cytotoxicity against Human Breast Cancer Cells. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999201020204001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Synthesis of 1,5-disubstituted tetrazoles by the cyclization of sodium azide with
N(N),N'-di(tri)substituted carbamimidothioate is reported. Tetrazoles are obtained in good to
excellent yield in the absence of a catalyst. All the compounds were characterized by NMR
and HRMS analysis. Single crystal X-ray diffraction data of 1-(4-chlorophenyl)-4-(5-phenyl-
1H-tetrazol-1-yl)piperazine 5g is also provided. Further, these disubstituted tetrazoles were
tested against the proliferation of human breast cancer cells (MCF-7), which identified 5e as a
lead compound. Finally, we have shown in silico that these compounds may interact with the
ligand binding domain of estrogen receptor α (ERα), that expresses at high amount in MCF-7
cells.
Collapse
Affiliation(s)
- Dukanya
- DOS in Organic Chemistry, University of Mysore, Manasagangothri, Mysuru - 570 006, Karnataka, India
| | | | | | - Basappa
- DOS in Organic Chemistry, University of Mysore, Manasagangothri, Mysuru - 570 006, Karnataka, India
| |
Collapse
|
15
|
Kumar Sigalapalli D, Kadagathur M, Sujat Shaikh A, Jadhav GS, Bakchi B, Nagendra Babu B, Tangellamudi ND. Microwave‐Assisted TBHP‐Mediated Synthesis of 2‐Amino‐1,3,4‐oxadiazoles in Water. ChemistrySelect 2020. [DOI: 10.1002/slct.202003516] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dilep Kumar Sigalapalli
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Manasa Kadagathur
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Arbaz Sujat Shaikh
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Govinda S. Jadhav
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Bulti Bakchi
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Bathini Nagendra Babu
- Department of Fluoro-Agrochemicals CSIR-Indian Institute of Chemical Technology Hyderabad 500007 India
| | - Neelima D. Tangellamudi
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| |
Collapse
|
16
|
Hu BL, Song YK, Zhang G, Yao Z, Zhang XG. Copper-catalyzed three component C S/C N coupling for the synthesis of trifluorothioacetamides. J Fluor Chem 2020. [DOI: 10.1016/j.jfluchem.2020.109640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
17
|
Xu H, Zhang X, Zhang X. Thioamidation of Arylpropyne Derivatives with Sulfur and Formamides for the Synthesis of Aryl Propanethioamides. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.201900680] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Hong‐Hui Xu
- College of Chemistry and Materials EngineeringWenzhou University Chashan Town Wenzhou 325035 China
| | - Xing‐Guo Zhang
- College of Chemistry and Materials EngineeringWenzhou University Chashan Town Wenzhou 325035 China
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive UtilizationHezhou University Hezhou 542899 China
| | - Xiao‐Hong Zhang
- College of Chemistry and Materials EngineeringWenzhou University Chashan Town Wenzhou 325035 China
| |
Collapse
|
18
|
Development of (4-methoxyphenyl)-1H-tetrazol-5-amine regioisomers as a new class of selective antitubercular agents. Eur J Med Chem 2019; 186:111882. [PMID: 31753514 DOI: 10.1016/j.ejmech.2019.111882] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/01/2019] [Accepted: 11/11/2019] [Indexed: 01/06/2023]
Abstract
A series of halogenated (4-methoxyphenyl)-1H-tetrazol-5-amine regioisomers (1a-9a, 1b-9b) were synthesized from their corresponding thiourea analogues (1-9). The synthesis pathway was confirmed by an X-ray crystallographic studies of 1a, 1b and 5a. Title derivatives were tested for their in vitro antitubercular activity against standard, "wild-type" and atypical mycobacteria. The highest therapeutic potential was attributed to isomeric N-(bromophenyl)tetrazoles 8a and 9a. Their growth-inhibitory effect against multidrug-resistant Mycobacterium tuberculosis Spec. 210 was 8-16-fold stronger than that of the first-line tuberculostatics. Other new tetrazole-derived compounds were also more or equally effective towards that pathogen comparing to the established pharmaceuticals. Among non-tuberculous strains, Mycobacterium scrofulaceum was the most susceptible to the presence of the majority of tetrazole derivatives. The synergistic interaction was found between 9a and streptomycin, as well as the additivity of both 8a and 9a in pairs with isoniazid, rifampicin and ethambutol. None of the studied compounds displayed antibacterial or cytotoxic properties against normal and cancer cell lines, which indicated their highly selective antimycobacterial effects.
Collapse
|
19
|
Savych O, Kuchkovska YO, Bogolyubsky AV, Konovets AI, Gubina KE, Pipko SE, Zhemera AV, Grishchenko AV, Khomenko DN, Brovarets VS, Doroschuk R, Moroz YS, Grygorenko OO. One-Pot Parallel Synthesis of 5-(Dialkylamino)tetrazoles. ACS COMBINATORIAL SCIENCE 2019; 21:635-642. [PMID: 31437394 DOI: 10.1021/acscombsci.9b00120] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Two protocols for the combinatorial synthesis of 5-(dialkylamino)tetrazoles were developed. The best success rate (67%) was shown by the method that used primary and secondary amines, 2,2,2-trifluoroethylthiocarbamate, and sodium azide as the starting reagents. The key steps included the formation of unsymmetrical thiourea, subsequent alkylation with 1,3-propane sultone and cyclization with azide anion. A 559-member aminotetrazole library was synthesized by this approach; the overall readily accessible (REAL) chemical space covered by the method exceeded 7 million feasible compounds.
Collapse
Affiliation(s)
- Olena Savych
- Enamine, Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine,
- V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, Murmanska Street 1, Kyiv 02094, Ukraine
| | - Yuliya O. Kuchkovska
- Enamine, Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine,
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | | | | | - Kateryna E. Gubina
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | | | | | | | - Dmytro N. Khomenko
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Volodymyr S. Brovarets
- V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, Murmanska Street 1, Kyiv 02094, Ukraine
| | - Roman Doroschuk
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Yurii 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., Chervonotkatska Street 78, Kyiv 02094, Ukraine,
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| |
Collapse
|
20
|
Srisa J, Tankam T, Sukwattanasinitt M, Wacharasindhu S. Micelle-Enabled One-Pot Guanidine Synthesis in Water Directly from Isothiocyanate using Hypervalent Iodine(III) Reagents under Mild Conditions. Chem Asian J 2019; 14:3335-3343. [PMID: 31397526 DOI: 10.1002/asia.201900982] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Indexed: 02/06/2023]
Abstract
In this work, we developed a one-pot synthesis of guanidine directly from isothiocyanate using DIB (diacetoxyiodobenzene) as a desulfurizing agent under micellar conditions in water. Our optimization study revealed that the use of 1 % TPGS-750-M as a surfactant with NaOH as an additive base at room temperature can convert a variety of isothiocyanates and amines into corresponding guanidines in excellent yields (69-95 %). This synthetic process in water can be applied to prepare guanidine at gram-scale quantity. Our aqueous micellar medium also demonstrated high reusability as the reaction can be performed for several cycles without losing its efficiency. The reaction is metal-free, utilizes water as solvent and practical (room temperature and open flask).
Collapse
Affiliation(s)
- Jakkrit Srisa
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.,Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok, Thailand
| | - Theeranon Tankam
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Mongkol Sukwattanasinitt
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.,Nanotec-CU Center of Excellence on Food and Agriculture, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Sumrit Wacharasindhu
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok, Thailand.,Nanotec-CU Center of Excellence on Food and Agriculture, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| |
Collapse
|
21
|
Preparation of 2,5-diamino-1,3,4-thiadiazole derivatives using MgO nanoparticles as heterogeneous basic catalysts. MONATSHEFTE FUR CHEMIE 2019. [DOI: 10.1007/s00706-019-02431-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
22
|
Dawood KM. Bis‐thiourea Derivatives and Their Utility in Synthesis of Mono‐heterocyclic, Bis‐heterocyclic, and Fused Heterocyclic Systems. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3540] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Kamal M. Dawood
- Chemistry Department, Faculty of ScienceCairo University Giza 12613 Egypt
| |
Collapse
|
23
|
Mitra B, Pariyar GC, Ghosh P. Glycerol: A Benign Solvent‐Assisted Metal‐Free One‐Pot Multi‐Component Synthesis of 4
H
‐Thiopyran and Thioamides from Easily Accessible Precursors. ChemistrySelect 2019. [DOI: 10.1002/slct.201900982] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Bijeta Mitra
- Department of ChemistryUniversity of North Bengal, Dist. Darjeeling, West Bengal India
| | - Gyan Chandra Pariyar
- Department of ChemistryUniversity of North Bengal, Dist. Darjeeling, West Bengal India
| | - Pranab Ghosh
- Department of ChemistryUniversity of North Bengal, Dist. Darjeeling, West Bengal India
| |
Collapse
|
24
|
Nimnual P, Tummatorn J, Boekfa B, Thongsornkleeb C, Ruchirawat S, Piyachat P, Punjajom K. Construction of 5-Aminotetrazoles via in Situ Generation of Carbodiimidium Ions from Ketones Promoted by TMSN 3/TfOH. J Org Chem 2019; 84:5603-5613. [PMID: 30945854 DOI: 10.1021/acs.joc.9b00555] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
A novel synthetic approach for the synthesis of 5-aminotetrazoles has been developed by employing simple ketones as substrates. This methodology involved the N2-extrusion/aryl migration of azido complexes as the key step for the in situ generation of carbodiimidium ion, which could further react with hydrazoic acid and cyclize intramolecularly to provide 5-aminotetrazoles in good to excellent yields. In addition, the regioselectivity of the reaction was studied and rationalized by density functional theory calculations.
Collapse
Affiliation(s)
- Phongprapan Nimnual
- Program on Chemical Biology , Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education , 54 Kamphaeng Phet 6 , Laksi , Bangkok 10210 , Thailand
| | - Jumreang Tummatorn
- Program on Chemical Biology , Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education , 54 Kamphaeng Phet 6 , Laksi , Bangkok 10210 , Thailand.,Laboratory of Medicinal Chemistry , Chulabhorn Research Institute , 54 Kamphaeng Phet 6 , Laksi , Bangkok 10210 , Thailand
| | - Bundet Boekfa
- Department of Chemistry, Faculty of Liberal Arts and Science , Kasetsart University , Kamphaeng Saen Campus, Bangkok , Nakhon Pathom 73140 , Thailand
| | - Charnsak Thongsornkleeb
- Program on Chemical Biology , Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education , 54 Kamphaeng Phet 6 , Laksi , Bangkok 10210 , Thailand.,Laboratory of Medicinal Chemistry , Chulabhorn Research Institute , 54 Kamphaeng Phet 6 , Laksi , Bangkok 10210 , Thailand
| | - Somsak Ruchirawat
- Program on Chemical Biology , Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education , 54 Kamphaeng Phet 6 , Laksi , Bangkok 10210 , Thailand.,Laboratory of Medicinal Chemistry , Chulabhorn Research Institute , 54 Kamphaeng Phet 6 , Laksi , Bangkok 10210 , Thailand
| | - Pawida Piyachat
- Program on Chemical Biology , Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education , 54 Kamphaeng Phet 6 , Laksi , Bangkok 10210 , Thailand
| | - Kunlayanee Punjajom
- Program on Chemical Biology , Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education , 54 Kamphaeng Phet 6 , Laksi , Bangkok 10210 , Thailand
| |
Collapse
|
25
|
A Useful Synthesis of 2-Acylamino-1,3,4-oxadiazoles from Acylthiosemicarbazides Using Potassium Iodate and the Discovery of New Antibacterial Compounds. Molecules 2019; 24:molecules24081490. [PMID: 30988267 PMCID: PMC6515089 DOI: 10.3390/molecules24081490] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/13/2019] [Accepted: 04/15/2019] [Indexed: 12/14/2022] Open
Abstract
A useful method for the synthesis of 2-acylamino-1,3,4-oxadiazoles was developed. By using potassium iodate as an oxidant in water at 60 °C, a wide range of 2-acylamino-1,3,4-oxadiazoles were afforded in moderate to excellent yields within two hours. This method could provide a facile shortcut to generate a series of 2-acylamino-1,3,4-oxadiazoles in medicinal chemistry. Interestingly, some highly potent antibiotic compounds were found through this synthetic method, and some of them displayed a significant improvement in activity compared with the corresponding 1,4-diacylthiosemicarbazides. Compound 2n was the most active against Staphylococcus aureus with MIC (minimum inhibitory concentration) of 1.56 mg/mL, and compounds 2m and 2q were the most active against Bacillus subtilis with MIC of 0.78 mg/mL. The preliminary cytotoxic activities of the most potent compounds 2m, 2n, and 2q against the androgen-independent (PC-3) prostate cancer cell line were more than 30 μM (IC50 > 30 μM).
Collapse
|
26
|
Nikolić AM, Ajdačić V, Opsenica IM. Palladium-catalyzed N-Arylation of 1-substituted-1H-tetrazol-5-amines. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2018.11.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
27
|
Gupta GR, Shah J, Vadagaonkar KS, Lavekar AG, Kapdi AR. Hetero-bimetallic cooperative catalysis for the synthesis of heteroarenes. Org Biomol Chem 2019; 17:7596-7631. [DOI: 10.1039/c9ob01152h] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Review covering the synthesis of 5- and 6-membered as well as condensed heteroarenes, focussing on the combinations in cooperative catalytic systems in strategies used to achieve selectivity and also highlights the mode of action for the cooperative catalysis leading to the synthesis of commercially and biologically relevant heteroarenes.
Collapse
Affiliation(s)
- Gaurav R. Gupta
- Department of Chemistry
- Institute of Chemical Technology
- Mumbai-400019
- India
| | - Jagrut Shah
- Department of Chemistry
- Institute of Chemical Technology
- Mumbai-400019
- India
| | | | - Aditya G. Lavekar
- Former Research Fellow
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Anant R. Kapdi
- Department of Chemistry
- Institute of Chemical Technology
- Mumbai-400019
- India
| |
Collapse
|
28
|
Akkachairin B, Tummatorn J, Khamsuwan N, Thongsornkleeb C, Ruchirawat S. Domino N2-Extrusion–Cyclization of Alkynylarylketone Derivatives for the Synthesis of Indoloquinolines and Carbocycle-Fused Quinolines. J Org Chem 2018; 83:11254-11268. [DOI: 10.1021/acs.joc.8b01851] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Bhornrawin Akkachairin
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Jumreang Tummatorn
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Narumol Khamsuwan
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Charnsak Thongsornkleeb
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Somsak Ruchirawat
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| |
Collapse
|
29
|
Pathare RS, Ansari AJ, Verma S, Maurya A, Maurya AK, Agnihotri VK, Sharon A, Pardasani RT, Sawant DM. Sequential Pd(0)/Fe(III) Catalyzed Azide–Isocyanide Coupling/Cyclization Reaction: One-Pot Synthesis of Aminotetrazoles. J Org Chem 2018; 83:9530-9537. [DOI: 10.1021/acs.joc.8b01261] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Ramdas S. Pathare
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer-305817, Rajasthan, India
| | - Arshad J. Ansari
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer-305817, Rajasthan, India
| | - Sarika Verma
- Department of Chemistry, Birla Institute of Technology, Mesra, Ranchi, Jharkhand-835215, India
| | - Anand Maurya
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer-305817, Rajasthan, India
| | - Antim K. Maurya
- Natural Product Chemistry and Process Development division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh-176061, India
| | - Vijai K. Agnihotri
- Natural Product Chemistry and Process Development division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh-176061, India
| | - Ashoke Sharon
- Department of Chemistry, Birla Institute of Technology, Mesra, Ranchi, Jharkhand-835215, India
| | - Ram T. Pardasani
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer-305817, Rajasthan, India
| | - Devesh M. Sawant
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer-305817, Rajasthan, India
| |
Collapse
|
30
|
Szulczyk D, Dobrowolski MA, Roszkowski P, Bielenica A, Stefańska J, Koliński M, Kmiecik S, Jóźwiak M, Wrzosek M, Olejarz W, Struga M. Design and synthesis of novel 1H-tetrazol-5-amine based potent antimicrobial agents: DNA topoisomerase IV and gyrase affinity evaluation supported by molecular docking studies. Eur J Med Chem 2018; 156:631-640. [PMID: 30031974 DOI: 10.1016/j.ejmech.2018.07.041] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 07/11/2018] [Accepted: 07/15/2018] [Indexed: 12/27/2022]
Abstract
A total of 14 of 1,5-disubstituted tetrazole derivatives were prepared by reacting appropriate thiourea and sodium azide in the presence of mercury (II) chloride and triethylamine. All compounds were evaluated in vitro for their antimicrobial activity. Derivatives 10 and 11 showed the highest inhibition against Gram-positive and Gram-negative strains (standard and hospital strains). The observed minimal inhibitory concentrations values were in the range of 1-208 μM (0.25-64 μg/ml). Inhibitory activity of 1,5-tetrazole derivatives 10 and 11 against gyrase and topoisomerase IV isolated from S. aureus was studied. Evaluation was supported by molecular docking studies for all synthesized derivatives and reference ciprofloxacin. Moreover, selected tetrazoles (2, 3, 5, 6, 8, 9, 10 and 11) were evaluated for their cytotoxicity. All tested compounds are non-cytotoxic against HaCaT and A549 cells (CC50 ≤ 60 μM).
Collapse
Affiliation(s)
- Daniel Szulczyk
- Chair and Department of Biochemistry, Medical University, 02-097 Warszawa, Poland.
| | | | - Piotr Roszkowski
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Anna Bielenica
- Chair and Department of Biochemistry, Medical University, 02-097 Warszawa, Poland
| | - Joanna Stefańska
- Laboratory of Centre for Preclinical Research, Medical University of Warsaw, Banacha 1B, 02-097 Warsaw, Poland; Department of Pharmaceutical Microbiology, Medical University, 02-007 Warszawa, Poland
| | - Michał Koliński
- Bioinformatics Laboratory, Mossakowski Medical Research Centre, Polish Academy of Sciences, 02-106 Warsaw, Poland
| | - Sebastian Kmiecik
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, 02-089 Warsaw, Poland
| | - Michał Jóźwiak
- Department of Biochemistry and Pharmacogenomics, Faculty of Pharmacy, Medical University of Warsaw, 02-097 Warszawa, Poland; Laboratory of Centre for Preclinical Research, Medical University of Warsaw, Banacha 1B, 02-097 Warsaw, Poland; Department of Biochemistry, Second Faculty of Medicine, Medical University of Warsaw, 02-097 Warszawa, Poland
| | - Małgorzata Wrzosek
- Department of Biochemistry and Pharmacogenomics, Faculty of Pharmacy, Medical University of Warsaw, 02-097 Warszawa, Poland; Laboratory of Centre for Preclinical Research, Medical University of Warsaw, Banacha 1B, 02-097 Warsaw, Poland
| | - Wioletta Olejarz
- Department of Biochemistry and Pharmacogenomics, Faculty of Pharmacy, Medical University of Warsaw, 02-097 Warszawa, Poland; Laboratory of Centre for Preclinical Research, Medical University of Warsaw, Banacha 1B, 02-097 Warsaw, Poland
| | - Marta Struga
- Chair and Department of Biochemistry, Medical University, 02-097 Warszawa, Poland; Laboratory of Centre for Preclinical Research, Medical University of Warsaw, Banacha 1B, 02-097 Warsaw, Poland
| |
Collapse
|
31
|
Wagh GD, Pathare SP, Akamanchi KG. Sulfated-Tungstate-Catalyzed Synthesis of Ureas/Thioureas via Transamidation and Synthesis of Forchlorofenuron. ChemistrySelect 2018. [DOI: 10.1002/slct.201800954] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ganesh D. Wagh
- Department of Pharmaceutical Sciences and Technology Institute of Chemical Technology Matunga; Mumbai India 400019
| | - Sagar P. Pathare
- Department of Pharmaceutical Sciences and Technology Institute of Chemical Technology Matunga; Mumbai India 400019
| | - Krishnacharya G. Akamanchi
- Department of Pharmaceutical Sciences and Technology Institute of Chemical Technology Matunga; Mumbai India 400019
| |
Collapse
|
32
|
Abdildinova A, Gong YD. Current Parallel Solid-Phase Synthesis of Drug-like Oxadiazole and Thiadiazole Derivatives for Combinatorial Chemistry. ACS COMBINATORIAL SCIENCE 2018; 20:309-329. [PMID: 29714475 DOI: 10.1021/acscombsci.8b00044] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Solid-phase organic synthesis is a powerful tool in the synthesis of small organic molecules and building of libraries of compounds for drug discovery. Heterocyclic compounds are important components of the drug discovery field as well and serve as a core for hundreds of marketed drugs. In particular, oxadiazole and thiadiazole cores are compounds of great interest due to their comprehensive biological activities and structural features. Therefore, a plethora of oxadiazole and thiadiazole synthesis methodologies have been reported to date, including solution and solid-phase synthesis methodologies. In this review, we concentrate on and summarize solid-phase synthetic approaches of the oxadiazole and thiadiazole derivatives.
Collapse
Affiliation(s)
- Aizhan Abdildinova
- Innovative Drug Library Research Center, Department of Chemistry, College of Science, Dongguk University, 26, 3-ga, Pil-dong, Jung-gu, Seoul 04620, Korea
| | - Young-Dae Gong
- Innovative Drug Library Research Center, Department of Chemistry, College of Science, Dongguk University, 26, 3-ga, Pil-dong, Jung-gu, Seoul 04620, Korea
| |
Collapse
|
33
|
New lipophilic isoniazid derivatives and their 1,3,4-oxadiazole analogues: Synthesis, antimycobacterial activity and investigation of their mechanism of action. Eur J Med Chem 2018; 151:824-835. [PMID: 29679902 DOI: 10.1016/j.ejmech.2018.04.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 03/27/2018] [Accepted: 04/08/2018] [Indexed: 01/31/2023]
Abstract
The development of novel drugs is essential for the treatment of tuberculosis and other mycobacterial infections in future. A series of N-alkyl-2-isonicotinoylhydrazine-1-carboxamides was synthesized from isoniazid (INH) and then cyclized to N-alkyl-5-(pyridin-4-yl)-1,3,4-oxadiazole-2-amines. All derivatives were characterised spectroscopically. The compounds were screened for their in vitro antimycobacterial activity against susceptible and multidrug-resistant Mycobacterium tuberculosis (Mtb.) and nontuberculous mycobacteria (NTM; M. avium, M. kansasii). The most active carboxamides were substituted by a short n-alkyl, their activity was comparable to INH with minimum inhibitory concentrations (MICs) against Mtb. of 0.5-2 μM. Moreover, they are non-toxic for HepG2, and some of them are highly active against INH-resistant NTM (MICs ≥4 μM). Their cyclization to 1,3,4-oxadiazoles did not increase the activity. The experimentally proved mechanism of action of 2-isonicotinoylhydrazine-1-carboxamides consists of the inhibition of enoyl-ACP reductase (InhA) in a way similar to INH, which is blocking the biosynthesis of mycolic acids. N-Dodecyl-5-(pyridin-4-yl)-1,3,4-oxadiazol-2-amine as the most efficacious oxadiazole inhibits growth of both susceptible and drug-resistant Mtb. strains with uniform MIC values of 4-8 μM with no cross-resistance to antitubercular drugs including INH. The mechanism of action is not elucidated but it is different from INH. Obtained results qualify these promising derivatives for further investigation.
Collapse
|
34
|
Wagh G, Autade S, Patil PC, Akamanchi KG. o-Iodoxybenzoic acid mediated generation of aryl free radicals: synthesis of stilbenes through C–C cross-coupling with β-nitrostyrenes. NEW J CHEM 2018. [DOI: 10.1039/c7nj04701k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The generation of an aryl free radicals in the presence of nitrostyrenes through a combination of aryl hydrazines and o-iodoxybenzoic acid led to the synthesis of stilbenes by forming a new carbon–carbon bond after subsequent elimination of a nitrosyl radical.
Collapse
Affiliation(s)
- Ganesh Wagh
- Department of Pharmaceutical Sciences and Technology
- Institute of Chemical Technology
- Matunga
- Mumbai 400019
- India
| | - Snehalata Autade
- Department of Pharmaceutical Sciences and Technology
- Institute of Chemical Technology
- Matunga
- Mumbai 400019
- India
| | - Pravin C. Patil
- Department of Pharmaceutical Sciences and Technology
- Institute of Chemical Technology
- Matunga
- Mumbai 400019
- India
| | - Krishnacharya G. Akamanchi
- Department of Pharmaceutical Sciences and Technology
- Institute of Chemical Technology
- Matunga
- Mumbai 400019
- India
| |
Collapse
|
35
|
vali Shaik B, Seelam M, Tamminana R, Kammela PR. Efficient Copper-Promoted Tandem Multi-Component Strategy: The Synthesis of 1- Aryl/Alkyl-5-(N-Benzoylamino) Tetrazoles and Guanidine's. ChemistrySelect 2017. [DOI: 10.1002/slct.201702568] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Baji vali Shaik
- Department of Chemistry; Gudlavalleru Engineering College, Gudlavalleru; Krishna, Andhra Pradesh India
| | - Mohan Seelam
- Department of Chemistry; Bapatla Engineering College, Bapatla; Guntur, AP- 522101 Inida
| | - Ramana Tamminana
- Department of Chemistry; GITAM University; NH-207 Doddaballapur Taluk, Bengaluru, District, Karnataka- 561203
| | - Prasad Rao Kammela
- Department of Chemistry; Bapatla Engineering College, Bapatla; Guntur, AP- 522101 Inida
| |
Collapse
|
36
|
Bag SS, De S. Isothiocyanyl Alanine as a Synthetic Intermediate for the Synthesis of Thioureayl Alanines and Subsequent Aminotetrazolyl Alanines. J Org Chem 2017; 82:12276-12285. [PMID: 29065260 DOI: 10.1021/acs.joc.7b02103] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The synthesis of unnatural amino acids with small side-chain functionalities usable for further transformations is highly demanding for the expansion of the genetic code and other possible biotechnological applications. To this end, we wanted to report the utility of an unexplored unnatural amino acid, isothiocyanyl alanine (NCSAla = Ita), for the synthesis of another class of unnatural amino acids, thioureayl alanines (TUAla = Tua). The synthesis of a third class of unnatural amino acids, amino tetrazolyl alanines (ATzAla = Ata), in a very good yield was subsequently achieved utilizing thioureayl alanines. Thus, a variety of aliphatic- and aromatic-substituted thioureayl alanines and aromatic-substituted amino tetrazolyl alanines were successfully synthesized in good to excellent yields. The photophysical properties of three of the fluorescent unnatural amino acids from two classes were also studied and presented herein.
Collapse
Affiliation(s)
- Subhendu Sekhar Bag
- Bioorganic Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology Guwahati 781039, India
| | - Suranjan De
- Bioorganic Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology Guwahati 781039, India
| |
Collapse
|
37
|
Liu J, Zhao S, Yan X, Zhang Y, Zhao S, Zhuo K, Yue Y. Elemental-Sulfur-Promoted C(sp3
)−H Activation of Methyl Heteroarenes Leading to Thioamides. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700532] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jianming Liu
- Collaborative Innovation Center of Henan Province for Green; Manufacturing of Fine Chemicals; Key Laboratory of Green Chemical Media and Reactions; Ministry of Education; Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials; School of Chemistry and Chemical Engineering; Henan Normal University; Xinxiang Henan 453007 P. R. China
| | - Shanshan Zhao
- Collaborative Innovation Center of Henan Province for Green; Manufacturing of Fine Chemicals; Key Laboratory of Green Chemical Media and Reactions; Ministry of Education; Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials; School of Chemistry and Chemical Engineering; Henan Normal University; Xinxiang Henan 453007 P. R. China
| | - Xuyang Yan
- Collaborative Innovation Center of Henan Province for Green; Manufacturing of Fine Chemicals; Key Laboratory of Green Chemical Media and Reactions; Ministry of Education; Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials; School of Chemistry and Chemical Engineering; Henan Normal University; Xinxiang Henan 453007 P. R. China
| | - Yanyan Zhang
- Collaborative Innovation Center of Henan Province for Green; Manufacturing of Fine Chemicals; Key Laboratory of Green Chemical Media and Reactions; Ministry of Education; Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials; School of Chemistry and Chemical Engineering; Henan Normal University; Xinxiang Henan 453007 P. R. China
| | - Shufang Zhao
- Collaborative Innovation Center of Henan Province for Green; Manufacturing of Fine Chemicals; Key Laboratory of Green Chemical Media and Reactions; Ministry of Education; Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials; School of Chemistry and Chemical Engineering; Henan Normal University; Xinxiang Henan 453007 P. R. China
| | - Kelei Zhuo
- Collaborative Innovation Center of Henan Province for Green; Manufacturing of Fine Chemicals; Key Laboratory of Green Chemical Media and Reactions; Ministry of Education; Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials; School of Chemistry and Chemical Engineering; Henan Normal University; Xinxiang Henan 453007 P. R. China
| | - Yuanyuan Yue
- Collaborative Innovation Center of Henan Province for Green; Manufacturing of Fine Chemicals; Key Laboratory of Green Chemical Media and Reactions; Ministry of Education; Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials; School of Chemistry and Chemical Engineering; Henan Normal University; Xinxiang Henan 453007 P. R. China
| |
Collapse
|
38
|
Reddy SS, Reddy BN, Reddy PVG, Reddy GV, Sarma LS. Mild and Efficient Synthesis of 5-(2,2-difluoro-1-phenyl cyclopropyl)- N-substituted-1,3,4-oxadiazol-2-amines viaGraphene Oxide as Catalyst under Ultrasonic Irradiation Conditions. ChemistrySelect 2017. [DOI: 10.1002/slct.201601413] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Bijivemula N. Reddy
- Department of Chemistry; Vellore Institute of Technology; Vellore Tamil Nadu India
| | | | - Gajulapalli Vishwakshan Reddy
- Nanoelectrochemistry Research Laboratory; Department of Chemistry; Yogi Vemana University; Kadapa- 516003, Andhra Pradesh India
| | - Loka Subramanyam Sarma
- Nanoelectrochemistry Research Laboratory; Department of Chemistry; Yogi Vemana University; Kadapa- 516003, Andhra Pradesh India
| |
Collapse
|
39
|
Pilania M, Velladurai A, Tantak MP, Kumar D. Cu-Catalyzed Expeditious Synthesis of N-Benzylaminoheter-ocycles Using N-Tosylhydrazones and Aminoheteroarenes. ChemistrySelect 2016. [DOI: 10.1002/slct.201601734] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Meenakshi Pilania
- Department of Chemistry; Birla Institute of Technology and Science; Pilani-333031 Rajasthan India
| | - Arun Velladurai
- Department of Chemistry; Birla Institute of Technology and Science; Pilani-333031 Rajasthan India
| | - Mukund P. Tantak
- Department of Chemistry; Birla Institute of Technology and Science; Pilani-333031 Rajasthan India
| | - Dalip Kumar
- Department of Chemistry; Birla Institute of Technology and Science; Pilani-333031 Rajasthan India
| |
Collapse
|
40
|
Li X, Pan Q, Hu R, Wang X, Yang Z, Han S. S8-Mediated One-Pot Synthesis of Thioamides from Benzyl Chlorides and Amines. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600385] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Xiaotong Li
- College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; Nanjing Jiangsu 211816 P. R. China
| | - Qiang Pan
- College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; Nanjing Jiangsu 211816 P. R. China
| | - Renhe Hu
- College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; Nanjing Jiangsu 211816 P. R. China
| | - Xin Wang
- College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; Nanjing Jiangsu 211816 P. R. China
| | - Zhao Yang
- College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; Nanjing Jiangsu 211816 P. R. China
| | - Shiqing Han
- College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; Nanjing Jiangsu 211816 P. R. China
- Key Laboratory of Synthetic Chemistry of Natural Substances; Shanghai Institute of Organic Chemistry; CAS; Shanghai 200032 P. R. China
| |
Collapse
|
41
|
Kumar K, Konar D, Goyal S, Gangar M, Chouhan M, Rawal RK, Nair VA. AlCl3/Cyclohexane Mediated Electrophilic Activation of Isothiocyanates: An Efficient Synthesis of Thioamides. ChemistrySelect 2016. [DOI: 10.1002/slct.201600601] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kapil Kumar
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research; Sector 67, SAS Nagar Punjab 160062 India
- Department of Pharmaceutical Chemistry; Indo-Soviet Friendship College of Pharmacy (ISFCP); Moga Punjab 142001 India
| | - Debabrata Konar
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research; Sector 67, SAS Nagar Punjab 160062 India
| | - Sandeep Goyal
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research; Sector 67, SAS Nagar Punjab 160062 India
| | - Mukesh Gangar
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research; Sector 67, SAS Nagar Punjab 160062 India
| | - Mangilal Chouhan
- Department of Pharmaceutical Sciences; Mohanlal Sukhadia University; Udaipur Rajasthan 313001 India
| | - Ravindra K. Rawal
- Department of Pharmaceutical Chemistry; Indo-Soviet Friendship College of Pharmacy (ISFCP); Moga Punjab 142001 India
| | - Vipin A. Nair
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research; Sector 67, SAS Nagar Punjab 160062 India
| |
Collapse
|
42
|
Abstract
The preparation, structure, and chemistry of hypervalent iodine compounds are reviewed with emphasis on their synthetic application. Compounds of iodine possess reactivity similar to that of transition metals, but have the advantage of environmental sustainability and efficient utilization of natural resources. These compounds are widely used in organic synthesis as selective oxidants and environmentally friendly reagents. Synthetic uses of hypervalent iodine reagents in halogenation reactions, various oxidations, rearrangements, aminations, C-C bond-forming reactions, and transition metal-catalyzed reactions are summarized and discussed. Recent discovery of hypervalent catalytic systems and recyclable reagents, and the development of new enantioselective reactions using chiral hypervalent iodine compounds represent a particularly important achievement in the field of hypervalent iodine chemistry. One of the goals of this Review is to attract the attention of the scientific community as to the benefits of using hypervalent iodine compounds as an environmentally sustainable alternative to heavy metals.
Collapse
Affiliation(s)
- Akira Yoshimura
- Department of Chemistry and Biochemistry, University of Minnesota Duluth , Duluth, Minnesota 55812, United States
| | - Viktor V Zhdankin
- Department of Chemistry and Biochemistry, University of Minnesota Duluth , Duluth, Minnesota 55812, United States
| |
Collapse
|
43
|
Preparation of bisthiourea and 5-Amino-4-benzoyl-1,2,4-triazol-3-thione complexes of Copper (II), Nickel and Zinc and their biological evolution. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2015.12.024] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
44
|
Wei J, Li Y, Jiang X. Aqueous Compatible Protocol to Both Alkyl and Aryl Thioamide Synthesis. Org Lett 2016; 18:340-3. [DOI: 10.1021/acs.orglett.5b03541] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jianpeng Wei
- Shanghai
Key Laboratory of Green Chemistry and Chemical Process, Department
of Chemistry, East China Normal University, Shanghai 200062, P. R. China
| | - Yiming Li
- Shanghai
Key Laboratory of Green Chemistry and Chemical Process, Department
of Chemistry, East China Normal University, Shanghai 200062, P. R. China
| | - Xuefeng Jiang
- Shanghai
Key Laboratory of Green Chemistry and Chemical Process, Department
of Chemistry, East China Normal University, Shanghai 200062, P. R. China
- Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing 100190, P. R. China
| |
Collapse
|
45
|
Prabhu G, Nagendra G, Sagar NR, Pal R, Guru Row TN, Sureshbabu VV. A Facile Synthesis of 1,5-Disubstituted Tetrazole Peptidomimetics by Desulfurization/Electrocyclization of Thiopeptides. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500384] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Girish Prabhu
- #109, Peptide Research Laboratory; Department of Studies in Chemistry; Central College Campus, Dr. B. R. Ambedkar Veedhi; Bangalore University; Bangalore 560001 India
| | - Govindappa Nagendra
- #109, Peptide Research Laboratory; Department of Studies in Chemistry; Central College Campus, Dr. B. R. Ambedkar Veedhi; Bangalore University; Bangalore 560001 India
| | - N. R. Sagar
- #109, Peptide Research Laboratory; Department of Studies in Chemistry; Central College Campus, Dr. B. R. Ambedkar Veedhi; Bangalore University; Bangalore 560001 India
| | - Rumpa Pal
- Solid State and Structural Chemistry Unit; Indian Institute of Science; Bangalore 560 012 India
| | - Tayur N. Guru Row
- Solid State and Structural Chemistry Unit; Indian Institute of Science; Bangalore 560 012 India
| | - Vommina V. Sureshbabu
- #109, Peptide Research Laboratory; Department of Studies in Chemistry; Central College Campus, Dr. B. R. Ambedkar Veedhi; Bangalore University; Bangalore 560001 India
| |
Collapse
|
46
|
Ganesh M, Sahoo SK, Khatun N, Patel BK. Copper-Catalysed Cascade Synthesis of Imidazolidine-Benzothiazole and Imidazolidine-Tetrazole Hybrid Heterocycles from Bis-thioureas by a Desulfurisation Strategy. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
47
|
Synthesis and antimicrobial evaluation of novel 4-amino-6-(1,3,4-oxadiazolo/1,3,4-thiadiazolo)-pyrimidine derivatives. Mol Divers 2015; 20:391-8. [DOI: 10.1007/s11030-015-9640-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2015] [Accepted: 10/10/2015] [Indexed: 10/22/2022]
|
48
|
Milen M, Slégel P, Keglevich P, Keglevich G, Simig G, Volk B. Efficient synthesis of N b -thioacyltryptamine derivatives by a three-component Willgerodt–Kindler reaction, and their transformation to 1-substituted-3,4-dihydro-β-carbolines. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.09.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
49
|
Niu P, Kang J, Tian X, Song L, Liu H, Wu J, Yu W, Chang J. Synthesis of 2-amino-1,3,4-oxadiazoles and 2-amino-1,3,4-thiadiazoles via sequential condensation and I2-mediated oxidative C–O/C–S bond formation. J Org Chem 2015; 80:1018-24. [PMID: 25506709 DOI: 10.1021/jo502518c] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
2-Amino-substituted 1,3,4-oxadiazoles and 1,3,4-thiadiazoles were synthesized via condensation of semicarbazide/thiosemicarbazide and the corresponding aldehydes followed by I2-mediated oxidative C–O/C–S bond formation. This transition-metal-free sequential synthesis process is compatible with aromatic, aliphatic, and cinnamic aldehydes, providing facile access to a variety of diazole derivatives bearing a 2-amino substituent in an efficient and scalable fashion.
Collapse
|
50
|
Sadhu P, Alla SK, Punniyamurthy T. Room-Temperature Cu(II)-Catalyzed Chemo- and Regioselective Ortho-Nitration of Arenes via C–H Functionalization. J Org Chem 2015; 80:8245-53. [DOI: 10.1021/acs.joc.5b01021] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Pradeep Sadhu
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Santhosh Kumar Alla
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | | |
Collapse
|