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He F, Sun Z, Xu Y, Yu J, Li W, Miao H, Wu C. Photoinduced [3+2] Cycloaddition of Alkyl-Acceptor Diazoalkanes: Diversity-Oriented Synthesis of Pyrazolines Containing a Quaternary Center. Org Lett 2024; 26:4031-4036. [PMID: 38277125 DOI: 10.1021/acs.orglett.3c04296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
We present a new [3+2] cycloaddition reaction between alkyl-acceptor diazoalkanes under visible light irradiation. By employing easily accessible alkyl-acceptor-type diazoalkanes or their precursor hydrazones as both 1,3-dipoles and dipolarophiles, a diverse range of pyrazoline derivatives featuring a quaternary center have been efficiently synthesized in a predictable manner, with excellent functional group tolerance and good yields. Furthermore, scale-up experiments and downstream transformations of the product were also detailed.
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Affiliation(s)
- Fengya He
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China
| | - Ziyi Sun
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China
| | - Yiwei Xu
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China
| | - Jingwen Yu
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China
| | - Wenyong Li
- Anhui Province Key Laboratory of Environmental Hormone and Reproduction, School of Biological and Food Engineering, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
| | - Hui Miao
- Anhui Province Key Laboratory of Environmental Hormone and Reproduction, School of Biological and Food Engineering, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
| | - Chenggui Wu
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China
- Anhui Province Key Laboratory of Environmental Hormone and Reproduction, School of Biological and Food Engineering, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
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2
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Sharma YB, Das D, Guru MM. Cu(II)-Catalyzed Aminocyclization of N-Propargyl Hydrazones to Substituted Pyrazolines. J Org Chem 2023; 88:16340-16351. [PMID: 37947756 DOI: 10.1021/acs.joc.3c01848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
An efficient route for the copper(II)-catalyzed synthesis of substituted pyrazolines from readily accessible N-propargyl hydrazones has been reported under open flask conditions via intramolecular C-N bond formation. N-acyl and N-tosyl-substituted pyrazolines have been prepared in moderate to excellent yields. Mechanistic investigations using NMR, high-resolution mass spectrometry (HRMS), and Hammett analyses suggest that the Cu(II) catalyst generally acts as a Lewis acid to form an iminium-ion intermediate via cyclization, which afforded the desired pyrazolines upon hydrolysis. One progesterone receptor antagonist has also been synthesized utilizing this reaction methodology.
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Affiliation(s)
- Yogesh Brijwashi Sharma
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research Kolkata, Kolkata 700054, India
| | - Debosmita Das
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research Kolkata, Kolkata 700054, India
| | - Murali Mohan Guru
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research Kolkata, Kolkata 700054, India
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3
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Xue Y, Wu C, Li H, Wang C. Acetic Acid-Catalyzed (3 + 2) Cyclization of 2-Aroyl-3-aryl-1,1-dicyanocyclopropanes with Arylhydrazines: To trans-4-Dicyanomethyl-1,3,5-triaryl-4,5-dihydropyrazoles. J Org Chem 2023; 88:15478-15485. [PMID: 37824753 DOI: 10.1021/acs.joc.3c01687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Acetic acid-catalyzed (3 + 2) cyclization reaction of substituted 2-aroyl-3-aryl-1,1-dicyanocyclopropanes with arylhydrazines was investigated for the efficient synthesis of 4-dicyanomethyl-1,3,5-triaryl-4,5-dihydropyrazoles in good yields, in which 4,5-double substituents are predominantly trans selective. This approach included the consecutive condensation, ring opening, and double nucleophilic cyclization reaction.
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Affiliation(s)
- Yuhang Xue
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
| | - Chengjun Wu
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
| | - Haiwen Li
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
| | - Cunde Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
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4
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Zhang X, Wang H, Li Z, Shu Y, Gan S, Zhang X, Shao H, Wang C. Chemodivergent Synthesis of Aza-Heterocycles with a Quarternary Carbon Center via [4 + 1] Annulation between Azoalkenes and α-Bromo Carbonyl Compounds. ACS OMEGA 2022; 7:40963-40972. [PMID: 36406503 PMCID: PMC9670695 DOI: 10.1021/acsomega.2c04127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 10/12/2022] [Indexed: 06/16/2023]
Abstract
An efficient [4 + 1] annulation reaction between in situ generated azoalkene intermediates and α-bromocarbonyls has been established. A series of skeletally diverse aza-heterocycles with a functionalized quaternary center were obtained in up to 89% yield under mild conditions.
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Affiliation(s)
- Xiaoke Zhang
- Central
Laboratory, Chongqing University FuLing
Hospital, Chongqing 408000, P.R. China
- Zunyi
Medical University, Zunyi, Guizhou 563000, P.R. China
| | - Haibo Wang
- Zhejiang
Hongyuan Pharmaceutical Co., Ltd., Chem & APIs, Industrial Zone, Linhai, Taizhou 310001, Zhejiang, P.R. China
| | - Ziwei Li
- Central
Laboratory, Chongqing University FuLing
Hospital, Chongqing 408000, P.R. China
| | - Yan Shu
- Central
Laboratory, Chongqing University FuLing
Hospital, Chongqing 408000, P.R. China
| | - Song Gan
- Zunyi
Medical University, Zunyi, Guizhou 563000, P.R. China
| | - Xuefang Zhang
- Zunyi
Medical University, Zunyi, Guizhou 563000, P.R. China
| | - Huawu Shao
- Natural
Products Research Centre, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 100045, P.R. China
| | - Chaoyong Wang
- Central
Laboratory, Chongqing University FuLing
Hospital, Chongqing 408000, P.R. China
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5
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Wang Y, Wu S, Wang L, Sun J, Yan CG, Han Y. Synthesis of dihydropyrazoles enabled by Pd-catalyzed carboamination of alkenyl hydrazones with alkenyl and aryl halides. Org Chem Front 2022. [DOI: 10.1039/d2qo00653g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of dihydropyrazoles enabled by Pd-catalyzed carboamination of alkenyl hydrazones with alkenyl or aryl halides is described. This method provides a practical and efficient route towards the synthesis of functionalized dihydropyrazoles.
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Affiliation(s)
- Yinqiang Wang
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Shuaijie Wu
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Lei Wang
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Jing Sun
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Chao-Guo Yan
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Ying Han
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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6
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Balkenhohl M, Kölbl S, Georgiev T, Carreira EM. Mn- and Co-Catalyzed Aminocyclizations of Unsaturated Hydrazones Providing a Broad Range of Functionalized Pyrazolines. JACS AU 2021; 1:919-924. [PMID: 34337605 PMCID: PMC8317158 DOI: 10.1021/jacsau.1c00176] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Manganese- and cobalt-catalyzed aminocyclization reactions of unsaturated hydrazones are reported. Whereas manganese catalysis provides access to pyrazoline and tetrahydropyridazine alcohols, cobalt catalysis for the first time paves the way for the selective formation of pyrazoline aldehydes. Furthermore, various functional groups including hydroperoxide, thiol derivatives, iodide, and bicyclopentane may be introduced via manganese-catalyzed ring-forming aminofunctionalization. A progesterone receptor antagonist was prepared using the aminocyclization protocol.
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Affiliation(s)
- Moritz Balkenhohl
- Laboratorium für Organische
Chemie, Eidgenössische Technische
Hochschule Zürich, 8093 Zürich, Switzerland
| | - Sebastian Kölbl
- Laboratorium für Organische
Chemie, Eidgenössische Technische
Hochschule Zürich, 8093 Zürich, Switzerland
| | - Tony Georgiev
- Laboratorium für Organische
Chemie, Eidgenössische Technische
Hochschule Zürich, 8093 Zürich, Switzerland
| | - Erick M. Carreira
- Laboratorium für Organische
Chemie, Eidgenössische Technische
Hochschule Zürich, 8093 Zürich, Switzerland
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8
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Sever B, Altintop MD, Özdemir A. Synthesis of New Bis-pyrazolines Endowed with Potent Antifungal Activity against Candida albicans and Aspergillus niger. LETT DRUG DES DISCOV 2021. [DOI: 10.2174/1570180817999201008155247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Due to the increasing number of cases of invasive fungal infections (IFIs),
there is an urgent need to identify potent antifungal agents capable of combating IFIs. Pyrazolines
are one such class of therapeutically active agents that could be considered to fulfill this need.
Objective:
In this context, this paper aims to identify two new series of bis-pyrazolines endowed
with potent antifungal activity against Candida albicans and Aspergillus niger.
Methods:
Two new series of bis-pyrazolines (4a-i, 5a-e) were synthesized through an efficient and
versatile synthetic procedure. The compounds were screened for their antifungal effects on C. albicans
and A. niger using a broth microdilution method. Their cytotoxic effects on NIH/3T3 mouse
embryonic fibroblast cells were determined using MTT assay. Molecular docking studies were performed
in the active site of lanosterol 14α-demethylase (CYP51) to shed light on their antifungal
effects using Schrödinger’s Maestro molecular modeling package.
Results:
5,5'-(1,4-Phenylene)bis[1-(2-(5-phenyl-1,3,4-oxadiazol-2-yl)thio)acetyl)-3-(2-thienyl)-4,5-
dihydro-1H-pyrazole] (4a) and 5,5'-(1,4-phenylene)bis[1-(2-(4-(2-hydroxyethyl)-1-piperazinylthiocarbamoyl)
thio)acetyl)-3-(2-thienyl)-4,5-dihydro-1H-pyrazole] (5a) were found as the most
promising antifungal agents in this series. Compounds 4a and 5a showed pronounced antifungal
activity against C. albicans (MIC= 0.016 mg/mL) and A. niger (MIC= 0.008 mg/mL). Based on
MTT assay, their antifungal effects were selective (IC50 > 0.500 mg/mL for NIH/3T3 cell line).
Molecular docking studies suggested that compounds 5a-e might show their anticandidal effects via
CYP51 inhibition in regard to their stronger interactions in the active site of CYP51.
Conclusion:
Compounds 4a and 5a stand out as potential antifungal agents for the management of
IFIs caused by C. albicans and A. niger.
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Affiliation(s)
- Belgin Sever
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskisehir, Turkey
| | - Mehlika Dilek Altintop
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskisehir, Turkey
| | - Ahmet Özdemir
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskisehir, Turkey
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9
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Engl S, Reiser O. Copper Makes the Difference: Visible Light-Mediated Atom Transfer Radical Addition Reactions of Iodoform with Olefins. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02984] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Sebastian Engl
- Institute of Organic Chemistry, University of Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
| | - Oliver Reiser
- Institute of Organic Chemistry, University of Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
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10
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Vorozhtsov NI, Korablina DD, Sviridova LA, Tafeenko VA, Moiseeva AA, Zyk NV, Beloglazkina EK. Unusual complexation of 1-phenylthiocarbamoyl-3-(pyridin-2-yl)pyrazoline with copper(ii) chloride. MENDELEEV COMMUNICATIONS 2020. [DOI: 10.1016/j.mencom.2020.03.039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Sarkar T, Talukdar K, Roy S, Punniyamurthy T. Expedient iron-catalyzed stereospecific synthesis of triazines via cycloaddition of aziridines with diaziridines. Chem Commun (Camb) 2020; 56:3381-3384. [PMID: 32091035 DOI: 10.1039/c9cc10089j] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Iron-catalyzed stereospecific [3+3]-annulation of aziridines with diaziridines is described to furnish [1,2,4]-triazines in high yield at room temperature. The use of an inexpensive iron salt catalyst, substrate scope and enantiomeric purity are the important practical features.
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Affiliation(s)
- Tanumay Sarkar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
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12
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Synthesis and Antiproliferative Activity of Isolongifolanone Pyrazoline Derivatives Inducing Intracellular ROS Accumulation. Pharm Chem J 2019. [DOI: 10.1007/s11094-019-02067-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Beloglazkina EK, Korablina DD, Vorozhtsov NI, Sviridova LA, Moiseeva AA, Skvortsov DA, Rybakov VB, Majouga AG, Zyk NV. Synthesis of 3-(pyridine-2-yl)-4,5-dihydro-1H-pyrazole-1-thiocarboxamides and their copper(II) complexes. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2017.01.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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14
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Chen S, Chen W, Chen X, Chen G, Ackermann L, Tian X. Copper(I)-Catalyzed Oxyamination of β,γ-Unsaturated Hydrazones: Synthesis of Dihydropyrazoles. Org Lett 2019; 21:7787-7790. [DOI: 10.1021/acs.orglett.9b02733] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Shanshan Chen
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Wenming Chen
- Department of Pharmaceutical Production Center, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, Hunan 410007, China
| | - Xu Chen
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Guifang Chen
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammannstraße 2, 37077 Göttingen, Germany
| | - Xu Tian
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
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Potkin VI, Petkevich SK, Kletskov AV, Kolesnik IA, Dikusar EA, Rozentsveig IB, Levkovskaya GG, Nasirova DK, Borisova KK, Zubkov FI. Synthesis of Azaheterocyclic Cymantrene Derivatives. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2018. [DOI: 10.1134/s1070428018030132] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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