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Tang J, Lu F, Zhang X, Gao Z, Gong S, Zhang E. Backbone-Enabled and Ester Groups Switched δ-C(sp 2)-H Amination/Fluorination: Cyclic Dipeptides Synthesis. Org Lett 2024; 26:5130-5135. [PMID: 38843448 DOI: 10.1021/acs.orglett.4c01540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
An efficient and concise strategy for the synthesis of cyclic dipeptides via Pd-catalyzed site-selective δ-C(sp2)-H amination/fluorination and N-to-C cyclization is disclosed. The backbone amides within the dipeptides serves as endogenous directing groups, while the desired products were switched by the C-terminal ester group. This chemistry presents a novel and robust alternative to construct cyclodipeptide fragments.
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Affiliation(s)
- Jian Tang
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
- Shengzhou Innovation Research Institute, Zhejiang Sci-Tech University, Shengzhou 312400, P. R. China
| | - Fengjie Lu
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Xinyi Zhang
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Zhenqi Gao
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Shuo Gong
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Ensheng Zhang
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
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2
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Goher SS, Abdrabo WS, Veerakanellore GB, Elgendy B. 2,5-Diketopiperazines (DKPs): Promising Scaffolds for Anticancer Agents. Curr Pharm Des 2024; 30:597-623. [PMID: 38343054 DOI: 10.2174/0113816128291798240201112916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 01/22/2024] [Indexed: 05/25/2024]
Abstract
2,5-Diketopiperazine (2,5-DKP) derivatives represent a family of secondary metabolites widely produced by bacteria, fungi, plants, animals, and marine organisms. Many natural products with DKP scaffolds exhibited various pharmacological activities such as antiviral, antifungal, antibacterial, and antitumor. 2,5-DKPs are recognized as privileged structures in medicinal chemistry, and compounds that incorporate the 2,5-DKP scaffold have been extensively investigated for their anticancer properties. This review is a thorough update on the anti-cancer activity of natural and synthesized 2,5-DKPs from 1997 to 2022. We have explored various aspects of 2,5-DKPs modifications and summarized their structure-activity relationships (SARs) to gain insight into their anticancer activities. We have also highlighted the novel approaches to enhance the specificity and pharmacokinetics of 2,5-DKP-based anticancer agents.
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Affiliation(s)
- Shaimaa S Goher
- Chemistry Department, Faculty of Science, Benha University, Benha 13518, Egypt
- Nanotechnology Research Centre (NTRC), The British University in Egypt (BUE), Suez Desert Road, El Sherouk City, Cairo 1183, Egypt
| | - Wessam S Abdrabo
- Chemistry Department, Faculty of Science, Benha University, Benha 13518, Egypt
| | - Giri Babu Veerakanellore
- Center for Clinical Pharmacology, Washington University School of Medicine and University of Health Sciences and Pharmacy, St. Louis, Missouri 63110, United States
- Department of Anesthesiology, Washington University School of Medicine in St. Louis, St. Louis, Missouri 63110, United States
| | - Bahaa Elgendy
- Chemistry Department, Faculty of Science, Benha University, Benha 13518, Egypt
- Center for Clinical Pharmacology, Washington University School of Medicine and University of Health Sciences and Pharmacy, St. Louis, Missouri 63110, United States
- Department of Anesthesiology, Washington University School of Medicine in St. Louis, St. Louis, Missouri 63110, United States
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3
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Gholami H, Cornali BM. Diastereoselective Spirocyclization: Entry to Spirocyclic Diketopiperazines. Org Lett 2023; 25:7822-7826. [PMID: 37857286 DOI: 10.1021/acs.orglett.3c03031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
We report a novel approach to access spirocyclic compounds containing a diketopiperazine (DKP) motif fused on a pyrrolidine ring. The shared spirocyclic carbon is at the ketone oxidation state, bearing two carbon-nitrogen bonds, one of which is introduced stereoselectively during the cyclization event. The reaction proceeds through an acid-catalyzed cyclization of a pendent chiral aminoamide unit onto a 2,3-dehydroproline amide moiety with up to >98:2 diastereoselectivity. We have demonstrated the generality of this methodology and its applicability to access chemically diverse DKP-containing structures. The extent of stereoinduction and how it varies according to the bulkiness of the substituent on the pendent aminoamide is demonstrated through a diverse substrate set. This methodology gives access to an underexplored spirocyclic diketopiperazine motif that may be useful in identifying new bioactive molecules.
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Affiliation(s)
- Hadi Gholami
- Janssen Research and Development, 3210 Merryfield Row, San Diego, California 92121, United States
| | - Brandon M Cornali
- Janssen Research and Development, 3210 Merryfield Row, San Diego, California 92121, United States
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4
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Koshizuka M, Shinoda K, Makino K, Shimada N. Concise Synthesis of 2,5-Diketopiperazines via Catalytic Hydroxy-Directed Peptide Bond Formations. J Org Chem 2023. [PMID: 37125993 DOI: 10.1021/acs.joc.3c00195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
2,5-Diketopiperazines (DKPs) with hydroxymethyl functional groups are essential structures found in many bioactive molecules and functional materials. We have established a simple protocol for the concise synthesis of this type of DKPs through diboronic acid anhydride-catalyzed hydroxy-directed peptide bond formations. The sequential reactions in this report, which consist of three steps, an intermolecular catalytic condensation reaction in which water is the only byproduct, a simple deprotection of the nitrogen-protecting group, and an intramolecular cyclization, enabled the synthesis of functionalized DKPs in high to excellent yields without any intermediate purification. The utility of this protocol has been demonstrated by synthesizing natural products, phomamide and Cyclo(Deala-l-Leu).
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Affiliation(s)
- Masayoshi Koshizuka
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences, Kitasato University, Tokyo 108-8641, Japan
| | - Kaito Shinoda
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences, Kitasato University, Tokyo 108-8641, Japan
| | - Kazuishi Makino
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences, Kitasato University, Tokyo 108-8641, Japan
| | - Naoyuki Shimada
- Laboratory of Organic Chemistry for Molecular Transformations, Department of Chemistry and the Institute of Natural Sciences, Nihon University, Tokyo 156-8550, Japan
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5
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Gao M, Ma S, Xu T, Jiang N, Xu Y, Zhong Y, Wu B. The design and synthesis of benzylpiperazine-based edaravone derivatives and their neuroprotective activities. JOURNAL OF CHEMICAL RESEARCH 2022. [DOI: 10.1177/17475198221116827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
New edaravone derivatives containing a benzylpiperazine moiety are designed and synthesized. The structures are characterized by 1H NMR, 13C NMR, and high-resolution mass spectrometry. The potential neuroprotective activities of the target compounds are evaluated in differentiated rat pheochromocytoma cells (PC12 cells) and in mice subjected to acute cerebral ischemia. Most of the target compounds showed neuroprotective activities both in vivo and in vitro, especially 1-(4-(4-fluorobenzyl) piperazin-1-yl)-2-(4-(5-hydroxy-3-methyl-1 H-pyrazol-1-yl)phenoxy)ethanone and 1-(4-(4-nitrobenzyl)piperazin-1-yl)-2-(4-(5-hydroxy-3-methyl-1 H-pyrazol-1-yl)phenoxy)ethanone, which displayed significant protective effects on cell viability against damage caused by H2O2, and remarkably prolonged the survival time of mice subjected to acute cerebral ischemia and decreased the mortality rate at all doses. These compounds represent lead compounds for the further discovery of neuroprotective agents for treating cerebral ischemic stroke. Molecular docking studies and basic structure–activity relationships are also presented.
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Affiliation(s)
- Mengjie Gao
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, P.R. China
| | - Shuangyan Ma
- School of Pharmacy, Nanjing Medical University, Nanjing, P.R. China
| | - Tong Xu
- School of Pharmacy, Nanjing Medical University, Nanjing, P.R. China
| | - Nan Jiang
- School of Pharmacy, Nanjing Medical University, Nanjing, P.R. China
| | - Yi Xu
- School of Pharmacy, Nanjing Medical University, Nanjing, P.R. China
| | - Yan Zhong
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, P.R. China
| | - Bin Wu
- School of Pharmacy, Nanjing Medical University, Nanjing, P.R. China
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6
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Karpe SA, Mondal D. Synthesis of 3‐Hydroxy‐2‐oxindole and 2,5‐Diketopiperazine Cores as Privileged Scaffolds of Indole Alkaloids. ChemistrySelect 2022. [DOI: 10.1002/slct.202202516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sameer A. Karpe
- School of Chemical Sciences Central University of Gujarat 382030 Gandhinagar Gujarat India
| | - Dhananjoy Mondal
- School of Chemical Sciences Central University of Gujarat 382030 Gandhinagar Gujarat India
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7
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Koning N, Strand D. A C-H Activation Approach to the Tricyclic Core of Glionitrin A and B. ACS OMEGA 2022; 7:12329-12341. [PMID: 35449932 PMCID: PMC9016890 DOI: 10.1021/acsomega.2c00810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 03/15/2022] [Indexed: 06/14/2023]
Abstract
Synthesis of diketopiperazines has been of long-standing interest in both natural product synthesis and medicinal chemistry. Here, we present an operationally convenient and efficient approach to the fused indoline-diketopiperazine tricyclic core of glionitrin A/B and related structures using a Pd-catalyzed C-H activation reaction to form the indoline five-membered ring. Exploratory work aimed at elaborating the tricyclic structures into the corresponding natural products is discussed.
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8
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Yang JS, Lu K, Li CX, Zhao ZH, Zhang XM, Zhang FM, Tu YQ. Chiral 1,2,3-Triazolium Salt Catalyzed Asymmetric Mono- and Dialkylation of 2,5-Diketopiperazines with the Construction of Tetrasubstituted Carbon Centers. Angew Chem Int Ed Engl 2022; 61:e202114129. [PMID: 34981881 DOI: 10.1002/anie.202114129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Indexed: 11/07/2022]
Abstract
Novel asymmetric mono- and dialkylation reactions of α-substituted 2,5-diketopiperazines catalyzed by new chiral spirocyclic-amide-derived triazolium organocatalysts have been developed, resulting in a range of enantioenriched 2,5-diketopiperazine derivatives containing one or two tetrasubstituted carbon stereocenters. The reactions feature high yields (up to 98%), and excellent cis-diastereo- and enantioselectivities (up to >20:1 dr, >99 % ee), and they provide a new asymmetric synthetic approach to important functionalized 2,5-diketopiperazine skeletons. Furthermore, a possible reaction mechanism was proposed based on both control experiments and extensive DFT calculations.
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Affiliation(s)
- Ju-Song Yang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Ka Lu
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Chen-Xiao Li
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Zu-Hang Zhao
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yong-Qiang Tu
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China.,School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
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9
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Synthesis, growth, spectroscopic, thermal, dielectric and DFT studies of piperazinium bis (trichloro acetate). J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Yang J, Lu K, Li C, Zhao Z, Zhang X, Zhang F, Tu Y. Chiral 1,2,3‐Triazolium Salt Catalyzed Asymmetric Mono‐ and Dialkylation of 2,5‐Diketopiperazines with the Construction of Tetrasubstituted Carbon Centers. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ju‐Song Yang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Ka Lu
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Chen‐Xiao Li
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Zu‐Hang Zhao
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Xiao‐Ming Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Fu‐Min Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Yong‐Qiang Tu
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
- School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs Shanghai Jiao Tong University Shanghai 200240 P. R. China
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11
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Insight into structural description of novel 1,4-Diacetyl-3,6-bis(phenylmethyl)-2,5-piperazinedione: synthesis, NMR, IR, Raman, X-ray, Hirshfeld surface, DFT and docking on breast cancer resistance protein. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131435] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Shimosaraya N, Sotani T, Miyagi Y, Mondarte EAQ, Suthiwanich K, Hayashi T, Nagata Y, Sogawa H, Sanda F. Tyrosine-based photoluminescent diketopiperazine supramolecular aggregates. SOFT MATTER 2021; 18:137-145. [PMID: 34821896 DOI: 10.1039/d1sm01206a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
L-Tyrosine diketopiperazine (DKP) derivative 1 was synthesized, and the aggregation and photoluminescence behaviors were examined. A solution of 1 in tetrahydrofuran (THF) gradually became viscous at room temperature, and turned into the gel state 5 hours after preparation, as confirmed by dynamic viscoelasticity measurement. A solution of 1 in THF exhibited photoluminescence. Fibrous patterns were observed by transmission electron, atomic force and fluorescence microscopies. Dynamic light scattering, semiempirical molecular orbital and density functional theory calculations, as well as molecular dynamics simulations, indicated aggregate formation. This was attributed to intermolecular hydrogen bonding, mainly between the DKP moieties and partly between the urethane moieties, resulting in π-orbital overlap of the terminal phenyl groups leading to photoluminescence.
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Affiliation(s)
- Noritaka Shimosaraya
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan.
| | - Taichi Sotani
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan.
| | - Yu Miyagi
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan.
| | - Evan Angelo Quimada Mondarte
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Kasinan Suthiwanich
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Tomohiro Hayashi
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Yuuya Nagata
- Institute for Chemical Reaction Design and Discovery, Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
| | - Hiromitsu Sogawa
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan.
| | - Fumio Sanda
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan.
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13
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Yin XS, Qi WY, Shi BF. Synthesis of tryptophan-containing 2,5-diketopiperazines via sequential C-H activation: total syntheses of tryprostatin A, maremycins A and B. Chem Sci 2021; 12:13137-13143. [PMID: 34745544 PMCID: PMC8513992 DOI: 10.1039/d1sc02343h] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 09/06/2021] [Indexed: 01/23/2023] Open
Abstract
Indole 2,5-diketopiperazines (DKPs) are an important type of metabolic cyclic dipeptides containing a tryptophan (Trp) unit possessing a range of interesting biological activities. The intriguing structural features and divergent activities have stimulated tremendous efforts towards their efficient synthesis. Herein, we report the development of a unified strategy for the synthesis of three Trp-containing DKPs, namely tryprostatin A, and maremycins A and B, via a sequential C–H activation strategy. The key Trp skeletons were synthesized from the inexpensive, readily available alanine via a Pd(ii)-catalyzed β-methyl C(sp3)–H monoarylation. A subsequent C2-selective prenylation of the resulting 6-OMe-Trp by Pd/norbornene-promoted C–H activation led to the total synthesis of tryprostatin A in 12 linear steps from alanine with 25% overall yield. Meanwhile, total syntheses of maremycins A and B were successfully accomplished using a sequential Pd-catalyzed methylene C(sp3)–H methylation as the key step in 15 linear steps from alanine. Indole 2,5-diketopiperazines (DKPs) are an important type of metabolic cyclic dipeptides containing a tryptophan (Trp) unit possessing a range of interesting biological activities.![]()
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Affiliation(s)
- Xue-Song Yin
- Department of Chemistry, Zhejiang University Hangzhou 310027 China
| | - Wei-Yi Qi
- Department of Chemistry, Zhejiang University Hangzhou 310027 China
| | - Bing-Feng Shi
- Department of Chemistry, Zhejiang University Hangzhou 310027 China
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14
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Heim P, Twamley B, O'Brien J, McDonald AR. Unexpected Intramolecular Phosphite‐Mediated Amide Coupling To Yield 3,5‐Dioxo‐1‐Piperazines. ChemistrySelect 2021. [DOI: 10.1002/slct.202102576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Philipp Heim
- School of Chemistry and CRANN/AMBER Nanoscience Institute Trinity College Dublin The University of Dublin College Green Dublin 2 Ireland
| | - Brendan Twamley
- School of Chemistry and CRANN/AMBER Nanoscience Institute Trinity College Dublin The University of Dublin College Green Dublin 2 Ireland
| | - John O'Brien
- School of Chemistry and CRANN/AMBER Nanoscience Institute Trinity College Dublin The University of Dublin College Green Dublin 2 Ireland
| | - Aidan R. McDonald
- School of Chemistry and CRANN/AMBER Nanoscience Institute Trinity College Dublin The University of Dublin College Green Dublin 2 Ireland
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15
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Wu C, Murugan SP, Wang Y, Pan H, Sun B, Lin Y, Fatimah S, Chang AHH, Chen C, Lee G. Synthesis of Indoline‐Fused 2,5‐Diketopiperazine Scaffolds
via
Ugi‐4CR in the Basic Mediated Tandem Consecutive Cyclization. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100658] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Chih‐Yu Wu
- Department of Nursing Tzu Chi University of Science and Technology Hualien 970302 Taiwan
| | | | - Yu‐Wei Wang
- Department of Chemistry National Dong Hwa University Shoufeng Hualien 974301 Taiwan
| | - Hao‐Wei Pan
- Department of Chemistry National Dong Hwa University Shoufeng Hualien 974301 Taiwan
| | - Bing‐Jian Sun
- Department of Chemistry National Dong Hwa University Shoufeng Hualien 974301 Taiwan
| | - Yu‐Ting Lin
- Department of Chemistry National Dong Hwa University Shoufeng Hualien 974301 Taiwan
| | - Siti Fatimah
- Department of Chemistry National Dong Hwa University Shoufeng Hualien 974301 Taiwan
| | - Agnes H. H. Chang
- Department of Chemistry National Dong Hwa University Shoufeng Hualien 974301 Taiwan
| | - Chinpiao Chen
- Department of Nursing Tzu Chi University of Science and Technology Hualien 970302 Taiwan
- Department of Chemistry National Dong Hwa University Shoufeng Hualien 974301 Taiwan
| | - Gene‐Hsian Lee
- Instrumentation Center National Taiwan University Taipei 10617 Taiwan
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16
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Sargolzaei M, Nikoofard H, Jorabchi MN. Quantum-Chemical ab initio Study of Side Chain pKa of Linear and Cyclic Lysine Dipeptides. JOURNAL OF COMPUTATIONAL BIOPHYSICS AND CHEMISTRY 2021. [DOI: 10.1142/s2737416520420028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Cyclic dipeptides show interesting biological activities such as antitumor, antiviral and so on. In biological systems, the bioavailability of drugs is determined by several parameters such as pKa values. In this study, we used DFT and thermodynamics cycle to determine pKa value of side chain of lysine in linear and cyclic dipeptides. All considered dipeptides were optimized using B3LYP and RMSD tool was used to compare the optimized structures. The calculated pKa values were compared with the available experimental data. Our results show that pKa of side chain of lysine increases for cyclic dipeptides compared to the linear ones. To justify the reason of increasing of pKa of cyclic dipeptides, we used NBO and AIM analyses. The analyses showed that a hydrogen bond in cyclic lysine dipeptides is responsible for increasing of pKa.
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Affiliation(s)
- Mohsen Sargolzaei
- Faculty of Chemistry, Shahrood University of Technology, Shahrood, Iran
| | - Hossein Nikoofard
- Faculty of Chemistry, Shahrood University of Technology, Shahrood, Iran
| | - Majid Namayandeh Jorabchi
- University of Rostock, Institute of Chemistry, Physical and Theoretical Chemistry, Albert-Einstein-Straße 21, 18059 Rostock, Germany
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17
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Zhao K, Xing R, Yan X. Cyclic dipeptides: Biological activities and self‐assembled materials. Pept Sci (Hoboken) 2020. [DOI: 10.1002/pep2.24202] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kaili Zhao
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering, Chinese Academy of Sciences Beijing China
- School of Chemical Engineering University of Chinese Academy of Sciences Beijing China
| | - Ruirui Xing
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering, Chinese Academy of Sciences Beijing China
- School of Chemical Engineering University of Chinese Academy of Sciences Beijing China
| | - Xuehai Yan
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering, Chinese Academy of Sciences Beijing China
- School of Chemical Engineering University of Chinese Academy of Sciences Beijing China
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18
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Maisto SK, Leersnyder AP, Pudner GL, Scheerer JR. Synthesis of Pyrrolopyrazinones by Construction of the Pyrrole Ring onto an Intact Diketopiperazine. J Org Chem 2020; 85:9264-9271. [PMID: 32602717 PMCID: PMC7464856 DOI: 10.1021/acs.joc.0c01263] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This study reveals an alternative sequence for the synthesis of compounds that contain the pyrrolodiketopiperazine structural motif. Starting with a diketopiperazine precursor, a mild aldol condensation precedes pyrrole annulation and bicyclic ring fusion. The derived intermediate aldol condensation products, which bear either a protected carbonyl or a functionalized alkyne, can be cyclized to the pyrrolodiketopiperazine by protic or gold Lewis acid catalysis.
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Affiliation(s)
- Susanna K Maisto
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Angela P Leersnyder
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Gwyneth L Pudner
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Jonathan R Scheerer
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187, United States
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19
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Garrido González FP, Mancilla Percino T. Synthesis, docking study and inhibitory activity of 2,6-diketopiperazines derived from α-amino acids on HDAC8. Bioorg Chem 2020; 102:104080. [PMID: 32683182 DOI: 10.1016/j.bioorg.2020.104080] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 07/03/2020] [Accepted: 07/04/2020] [Indexed: 01/12/2023]
Abstract
Diketopiperazines (DKPs) have been regarded as an important scaffold from the viewpoint of synthesis due to their biological properties for the treatment of several diseases, including cancer. In this work, two novel series of enantiomeric 2,6-DKPs derived from α-amino acids were synthesized through nucleophilic substitution and intramolecular cyclization reactions. All the compounds were docked against histone deacetylase 8 (HDAC8), which is a promising target for the development of anticancer drugs. These compounds bound into the active site of HDAC8 in a similar way to Trichostatin A (TSA), which is an HDAC8 inhibitor. This study showed that the conformation of the 2,6-DKP ring, stereochemistry, and the type of substituent on the chiral center had an important role in the binding modes. The Gibbs free energies and dissociation constants values of HDAC8-ligand complexes showed that compounds (S)-4hBn, (S)-4m, (R)-4h, and (R)-4m were more stable and affine towards HDAC8 than TSA. The inhibitory activities of 4a, (S)-4h, (S)- and (R)-4(g, l, m) were evaluated in vitro on HDAC8. It was found that compounds (R)-4g (IC50 = 21.54 nM) and (R)-4m (IC50 = 10.81 nM) exhibited better inhibitory activities than TSA (IC50 = 28.32 nM). These results suggested that 2,6-DKPs derivatives may be promising anticancer agents for further biological studies.
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Affiliation(s)
- Flor Paulina Garrido González
- Departamento de Química, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Apartado Postal 14-740, 07000 Ciudad de México, Mexico
| | - Teresa Mancilla Percino
- Departamento de Química, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Apartado Postal 14-740, 07000 Ciudad de México, Mexico.
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20
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Saavedra CJ, Cuevas F, Romero‐Estudillo I, Boto A. Synthesis of Diketopiperazine Scaffolds with Tailored
N
‐ and α‐Chains by Selective Modification of Customizable Units. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000470] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Carlos J. Saavedra
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Fco. Sánchez, 3 38206-La Laguna Tenerife SPAIN
- BIOSIGMA SL, c/Antonio Dominguez Afonso, 16 38003-S/C Tenerife SPAIN
| | - Fernando Cuevas
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Fco. Sánchez, 3 38206-La Laguna Tenerife SPAIN
- Centro de Investigaciones Químicas-IICBAUniversidad Autónoma del Estado de MorelosCatedrático CONACyT CIQ-UAEMAv. Universidad, 1001 62209 Cuernavaca MEXICO
| | - Ivan Romero‐Estudillo
- Centro de Investigaciones Químicas-IICBAUniversidad Autónoma del Estado de MorelosCatedrático CONACyT CIQ-UAEMAv. Universidad, 1001 62209 Cuernavaca MEXICO
| | - Alicia Boto
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Fco. Sánchez, 3 38206-La Laguna Tenerife SPAIN
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21
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Sargolzaei M, Jorabchi MN. Cyclization Effect on pKa of the Side Chain of Aspartic Acid in Dipeptides: A DFT Study. LETT ORG CHEM 2020. [DOI: 10.2174/1570178616666191019124709] [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
Cyclic dipeptides are very important compounds that have a wide range of applications in
pharmaceutical chemistry and life sciences. In the current work, the acidity of the side chain of aspartic
acid was calculated for various linear and a cyclic dipeptide. pKa values were derived using the thermodynamics
cycle and DFT/B3LYP approach. The obtained pKa values show strong acidity for cyclic
with respect to linear dipeptides. We found an intramolecular hydrogen bond in cyclic dipeptide structure,
which can be used to justify the increasing acidity of the side chain of Asp as compared to linear
structures.
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Affiliation(s)
- Mohsen Sargolzaei
- Department of Chemistry, Shahrood University of Technology, Shahrood, Iran
| | - Majid Namayandeh Jorabchi
- University of Rostock, Institute of Chemistry, Physical and Theoretical Chemistry, Albert-Einstein-Straße 21, 18059 Rostock, Germany
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22
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McManus JB, Onuska NPR, Jeffreys MS, Goodwin NC, Nicewicz DA. Site-Selective C–H Alkylation of Piperazine Substrates via Organic Photoredox Catalysis. Org Lett 2020; 22:679-683. [DOI: 10.1021/acs.orglett.9b04456] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joshua B. McManus
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Nicholas P. R. Onuska
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Matthew S. Jeffreys
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
| | - Nicole C. Goodwin
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
| | - David A. Nicewicz
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
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23
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Katta N, Ojha M, Murugan A, Arepally S, Sharada DS. Visible light-mediated photocatalytic oxidative cleavage of activated alkynes via hydroamination: a direct approach to oxamates. RSC Adv 2020; 10:12599-12603. [PMID: 35497603 PMCID: PMC9051298 DOI: 10.1039/c9ra10555g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 02/26/2020] [Indexed: 01/31/2023] Open
Abstract
The direct oxidative cleavage of activated alkynes via hydroamination has been described using organic photocatalyst under visible-light irradiation at room temperature. In this reaction, the single electron oxidation of an in situ formed enamine followed by radical coupling with an oxidant finally delivers the oxamate. The key features of this photocatalytic reaction are the mild reaction conditions, metal-free organic dye as a photocatalyst, and TBHP playing a dual role as “O” source and for the regeneration of the photocatalyst. The direct oxidative cleavage of activated alkynes via hydroamination has been described using organic photocatalyst under visible-light irradiation at room temperature.![]()
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Affiliation(s)
- Narenderreddy Katta
- Catalysis & Chemical Biology Laboratory
- Department of Chemistry Indian Institute of Technology Hyderabad
- Sangareddy
- India
| | - Mamata Ojha
- Catalysis & Chemical Biology Laboratory
- Department of Chemistry Indian Institute of Technology Hyderabad
- Sangareddy
- India
| | - Arumugavel Murugan
- Catalysis & Chemical Biology Laboratory
- Department of Chemistry Indian Institute of Technology Hyderabad
- Sangareddy
- India
| | - Sagar Arepally
- Catalysis & Chemical Biology Laboratory
- Department of Chemistry Indian Institute of Technology Hyderabad
- Sangareddy
- India
| | - Duddu S. Sharada
- Catalysis & Chemical Biology Laboratory
- Department of Chemistry Indian Institute of Technology Hyderabad
- Sangareddy
- India
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24
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Farhadian S, Shareghi B, Tirgir F, Reiisi S, Dehkordi NG, Momeni L, Heidari E. Design, synthesis, and anti-gastric cancer activity of novel 2,5-diketopiperazine. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111585] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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25
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Ge Y, Han Z, Wang Z, Ding K. Ir-Catalyzed Double Asymmetric Hydrogenation of 3,6-Dialkylidene-2,5-diketopiperazines for Enantioselective Synthesis of Cyclic Dipeptides. J Am Chem Soc 2019; 141:8981-8988. [PMID: 31079460 DOI: 10.1021/jacs.9b02920] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
An Ir/spiro[4,4]-1,6-nonadiene-based phosphine-oxazoline ligand (SpinPHOX) complex-catalyzed double asymmetric hydrogenation of 3,6-dialkylidene-1,4-dimethylpiperazine-2,5-diones has been developed, providing efficient and practical access to a wide variety of chiral 3,6-disubstituted-2,5-diketopiperazines in high yields with exclusive cis-diastereo- and excellent enantioselectivities (>99% de, up to 98% ee). The synthetic utilities of the protocol have been demonstrated in a gram scale synthesis of 6a and efficient construction of chiral products 8, 14, and 17 as well as a 2-butenyl-bridged bicyclic diketopiperazine 10 and hydroxydiketopiperazine 11. With an analogous achiral Ir catalyst, the hydrogenation of enantiopure monohydrogenated intermediate 7a gave cis-6a as the only product, indicating that the second-step hydrogenation of the titled transformation is a chiral substrate controlled process. The reaction profile study for asymmetric hydrogenation (AH) of 5a revealed that the concentration of the monohydrogenation intermediate 7a remained at a low level (<8%) during the course of hydrogenation. The hydrogenation of 5a to 6a proceeded significantly faster than that of its half-hydrogenated intermediate ( S)-7a, indicating that the titled reaction involves primarily a processive mechanism, in which a single catalyst molecule performs consecutive hydrogenation of the two C═C double bonds in substrate 5a without dissociation of the partially reduced 7a. The present protocol represents a rare example of asymmetric catalytic consecutive hydrogenation of heterocycles and provides an alternative way for efficient construction of cyclic dipeptides.
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Affiliation(s)
- Yao Ge
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Zhaobin Han
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Zheng Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Kuiling Ding
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Nankai University , Tianjin 300071 , China
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26
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Hazra A, Paira P, Palit P, Banerjee S, Mondal NB, Sahu NP. Synthesis of Symmetrically 1,4-disubstituted piperazine-2,5-diones: A New Class of Antileishmanial Agents. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/030823407x228254] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A series of 1,4-diphenyl-2,5-dioxopiperazine derivatives were synthesised in one pot sequence. The compounds demonstrated appreciable cytotoxic activity against Leishmania donovani on both forms of the parasite, and the results suggested that some derivatives (4, 11 and 12) could be exploited as antileishmanial agents.
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Affiliation(s)
- Abhijit Hazra
- Steroid and Terpenoid Chemistry Division, 4 Raja S.C. Mullick Road, Jadavpur, Kolkata 700 032, India
| | - Priyankar Paira
- Steroid and Terpenoid Chemistry Division, 4 Raja S.C. Mullick Road, Jadavpur, Kolkata 700 032, India
| | - Partha Palit
- Division of Infectious Diseases, Indian Institute of Chemical Biology, 4 Raja S.C. Mullick Road, Jadavpur, Kolkata 700 032, India
| | - Sukdeb Banerjee
- Steroid and Terpenoid Chemistry Division, 4 Raja S.C. Mullick Road, Jadavpur, Kolkata 700 032, India
| | - Nirup B. Mondal
- Steroid and Terpenoid Chemistry Division, 4 Raja S.C. Mullick Road, Jadavpur, Kolkata 700 032, India
| | - Niranjan P. Sahu
- Steroid and Terpenoid Chemistry Division, 4 Raja S.C. Mullick Road, Jadavpur, Kolkata 700 032, India
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27
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Xi YK, Zhang H, Li RX, Kang SY, Li J, Li Y. Total Synthesis of Spirotryprostatins through Organomediated Intramolecular Umpolung Cyclization. Chemistry 2019; 25:3005-3009. [DOI: 10.1002/chem.201806411] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Indexed: 01/04/2023]
Affiliation(s)
- Yong-Kai Xi
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
| | - Hongbin Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
| | - Rui-Xi Li
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
| | - Shi-Yuan Kang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
| | - Jin Li
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
| | - Yan Li
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
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28
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Chamorro-Arenas D, Osorio-Nieto U, Quintero L, Hernández-García L, Sartillo-Piscil F. Selective, Catalytic, and Dual C(sp3)–H Oxidation of Piperazines and Morpholines under Transition-Metal-Free Conditions. J Org Chem 2018; 83:15333-15346. [DOI: 10.1021/acs.joc.8b02564] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Delfino Chamorro-Arenas
- Centro de Investigación de la Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla (BUAP), 14 Sur Esq. San Claudio, Col. San Manuel, Puebla, Puebla 72570, México
| | - Urbano Osorio-Nieto
- Centro de Investigación de la Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla (BUAP), 14 Sur Esq. San Claudio, Col. San Manuel, Puebla, Puebla 72570, México
| | - Leticia Quintero
- Centro de Investigación de la Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla (BUAP), 14 Sur Esq. San Claudio, Col. San Manuel, Puebla, Puebla 72570, México
| | - Luís Hernández-García
- Centro de Investigación e Innovación Tecnológica, Instituto Tecnológico de Nuevo León, Av. De la Alianza No. 507, PIIT. Carretera Monterrey-Aeropuerto Km.10, Apodaca, Nuevo León 66628, México
| | - Fernando Sartillo-Piscil
- Centro de Investigación de la Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla (BUAP), 14 Sur Esq. San Claudio, Col. San Manuel, Puebla, Puebla 72570, México
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29
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Nilov DK, Yashina KI, Gushchina IV, Zakharenko AL, Sukhanova MV, Lavrik OI, Švedas VK. 2,5-Diketopiperazines: A New Class of Poly(ADP-ribose)polymerase Inhibitors. BIOCHEMISTRY (MOSCOW) 2018; 83:152-158. [DOI: 10.1134/s0006297918020074] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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30
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Jida M, Ballet S. An Efficient One-Pot Synthesis of Chiral N-Protected 3-Substituted (Diketo)piperazines via Ugi-4CR/De-Boc/Cyclization Process. ChemistrySelect 2018. [DOI: 10.1002/slct.201702943] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Mouhamad Jida
- Research Group of Organic Chemistry; Departments of Chemistry and Bioengineering Sciences; Vrije Universiteit Brussel; Pleinlaan 2 B-1050 Brussels Belgium
| | - Steven Ballet
- Research Group of Organic Chemistry; Departments of Chemistry and Bioengineering Sciences; Vrije Universiteit Brussel; Pleinlaan 2 B-1050 Brussels Belgium
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31
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Identification of Cyclic Dipeptides from Escherichia coli as New Antimicrobial Agents against Ralstonia Solanacearum. Molecules 2018; 23:molecules23010214. [PMID: 29351264 PMCID: PMC6017746 DOI: 10.3390/molecules23010214] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 01/15/2018] [Accepted: 01/18/2018] [Indexed: 11/17/2022] Open
Abstract
Ralstonia solanacearum is a causative agent of bacterial wilt in many important crops throughout the world. How to control bacterial wilt caused by R. solanacearum is a major problem in agriculture. In this study, we aim to isolate the biocontrol agents that have high efficacy in the control of bacterial wilt. Three new bacterial strains with high antimicrobial activity against R. solanacearum GMI1000 were isolated and identified. Our results demonstrated that these bacteria could remarkably inhibit the disease index of host plant infected by R. solanacearum. It was indicated that strain GZ-34 (CCTCC No. M 2016353) showed an excellent protective effect to tomato under greenhouse conditions. Strain GZ-34 was characterized as Escherichia coli based on morphology, biochemistry, and 16S rRNA analysis. We identified that the main antimicrobial compounds produced by E. coli GZ-34 were cyclo(l-Pro-d-Ile) and cyclo(l-Pro-l-Phe) using electrospray ionization mass spectrometry (ESI-MS) and nuclear magnetic resonance (NMR) analysis. The two active compounds also interfered with the expression levels of some pathogenicity-contributors of R. solanacearum. Furthermore, cyclo(l-Pro-l-Phe) effectively inhibited spore formation of Magnaporthe grisea, which is a vital pathogenesis process of the fungal pathogen, suggesting cyclic dipeptides from E. coli are promising potential antimicrobial agents with broad-spectrum activity to kill pathogens or interfere with their pathogenesis.
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32
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Acosta Quintero LM, Palma A, Cobo J, Glidewell C. A versatile synthesis of cyclic dipeptides using the stepwise construction of the piperazine-2,5-dione ring from simple precursors: synthetic sequence and the structure of a representative product, (3RS)-4-(2-allyl-3,5-dimethylphenyl)-1-benzyl-3-phenylpiperazine-2,5-dione. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2018; 74:159-165. [DOI: 10.1107/s2053229618000037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Accepted: 01/02/2018] [Indexed: 11/10/2022]
Abstract
A versatile synthesis of multiply substituted cyclic dipeptides has been designed, based on the stepwise construction of the piperazine-2,5-dione ring using molecular fragments from four different precursor molecules. Starting from substituted 2-allylanilines, reaction with methyl 2-bromo-2-phenylacetate yields the corresponding methyl 2-(2-allylanilino)-2-phenylacetates, which react with haloacetyl chlorides to give methyl 2-[N-(2-allylphenyl)-2-haloacetamido]-2-phenylacetates, which then undergo ring closure with benzylamine to yield the corresponding cyclic dipeptides of type 4-(2-allylphenyl)-1-benzyl-3-phenylpiperazine-2,5-dione. (3RS)-4-(2-Allyl-3,5-dimethylphenyl)-1-benzyl-3-phenylpiperazine-2,5-dione, C28H28N2O2, (IIId), crystallizes with Z′ = 2 in the space group P21/c; the allyl groups in the two independent molecules adopt different conformations and, in one of them, the allyl group is disordered over two sets of atomic sites having occupancies of 0.534 (4) and 0.466 (4). In both molecules, the piperazine-2,5-dione ring adopts a boat conformation, with the 3-phenyl ring in a quasi-axial site. The molecules of (IIId) are linked into a three-dimensional framework structure by a combination of three C—H...O hydrogen bonds and three C—H...π(arene) hydrogen bonds. Comparisons are made with some related structures.
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33
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Balalaie S, Ramezani Kejani R, Ghabraie E, Darvish F, Rominger F, Hamdan F, Bijanzadeh HR. Diastereoselective Synthesis of Functionalized Diketopiperazines through Post-transformational Reactions. J Org Chem 2017; 82:12141-12152. [DOI: 10.1021/acs.joc.7b01855] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Saeed Balalaie
- Peptide
Chemistry Research Center, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Iran
- Medical
Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Reihaneh Ramezani Kejani
- Peptide
Chemistry Research Center, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Iran
| | - Elmira Ghabraie
- Peptide
Chemistry Research Center, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Iran
| | - Fatemeh Darvish
- Peptide
Chemistry Research Center, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Iran
| | - Frank Rominger
- Organisch-Chemisches Institut der Universitaet Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Fatima Hamdan
- Peptide
Chemistry Research Center, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Iran
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34
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Kumar Mondal S, Ali SA, Kumar Manna S, Mandal A, Kumar Senapati B, Hossain M, Samanta S. Palladium-Catalyzed Intramolecular Cyclization: Access to Rare PentacyclicN-Fused Heterocycles. ChemistrySelect 2017. [DOI: 10.1002/slct.201701800] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Suresh Kumar Mondal
- Department of Chemistry; Bidhannagar College; Kolkata 700064 India, Fax: (9133) 2337 4782, Mobile: 919775550193
- Department of Chemistry and Chemical Technology; Vidyasagar University; Midnapore 721102, West Bengal India
| | - Sk Asraf Ali
- Department of Chemistry; Bidhannagar College; Kolkata 700064 India, Fax: (9133) 2337 4782, Mobile: 919775550193
| | - Susanta Kumar Manna
- Department of Chemistry; Bidhannagar College; Kolkata 700064 India, Fax: (9133) 2337 4782, Mobile: 919775550193
- Department of Chemistry and Chemical Technology; Vidyasagar University; Midnapore 721102, West Bengal India
| | - Arabinda Mandal
- Department of Chemistry; Bidhannagar College; Kolkata 700064 India, Fax: (9133) 2337 4782, Mobile: 919775550193
| | | | - Maidul Hossain
- Department of Chemistry and Chemical Technology; Vidyasagar University; Midnapore 721102, West Bengal India
| | - Shubhankar Samanta
- Department of Chemistry; Bidhannagar College; Kolkata 700064 India, Fax: (9133) 2337 4782, Mobile: 919775550193
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35
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Liu R, Kim AH, Kwak MK, Kang SO. Proline-Based Cyclic Dipeptides from Korean Fermented Vegetable Kimchi and from Leuconostoc mesenteroides LBP-K06 Have Activities against Multidrug-Resistant Bacteria. Front Microbiol 2017; 8:761. [PMID: 28512456 PMCID: PMC5411444 DOI: 10.3389/fmicb.2017.00761] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 04/12/2017] [Indexed: 11/13/2022] Open
Abstract
Lactobacillus plantarum and Leuconostoc mesenteroides play a prominent role as functional starters and predominant isolates in the production of various types of antimicrobial compound-containing fermented foods, especially including kimchi. In the case of the bioactive cyclic dipeptides, their racemic diastereomers inhibitory to bacteria and fungi have been suggested to come solely from Lactobacillus spp. of these strains. We previously demonstrated the antifungal and antiviral activities of proline-based cyclic dipeptides, which were fractionated from culture filtrates of Lb. plantarum LBP-K10 originated from kimchi. However, cyclic dipeptides have not been identified in the filtrates, either from cultures or fermented subject matter, driven by Ln. mesenteroides, which have been widely used as starter cultures for kimchi fermentation. Most importantly, the experimental verification of cyclic dipeptide-content changes during kimchi fermentation have also not been elucidated. Herein, the antibacterial fractions, including cyclo(Leu-Pro) and cyclo(Phe-Pro), from Ln. mesenteroides LBP-K06 culture filtrates, which exhibited a typical chromatographic retention behavior (tR), were identified by using semi-preparative high-performance liquid chromatography and gas chromatography-mass spectrometry. Based on this finding, the proline-based cyclic dipeptides, including cyclo(Ser-Pro), cyclo(Tyr-Pro), and cyclo(Leu-Pro), were additionally identified in the filtrates only when fermenting Chinese cabbage produced with Ln. mesenteroides LBP-K06 starter cultures. The detection and isolation of cyclic dipeptides solely in controlled fermented cabbage were conducted under the control of fermentation-process parameters concomitantly with strong CDP selectivity by using a two-consecutive-purification strategy. Interestingly, cyclic dipeptides in the filtrates, when using this strain as a starter, increased with fermentation time. However, no cyclic dipeptides were observed in the filtrates of other fermented products, including other types of kimchi and fermented materials of plant and animal origin. This is the first report to conclusively demonstrate evidence for the existence of antimicrobial cyclic dipeptides produced by Ln. mesenteroides in kimchi. Through filtrates from lactic acid bacterial cultures and from fermented foods, we have also proved a method of combining chromatographic fractionation and mass spectrometry-based analysis for screening cyclic dipeptide profiling, which may allow evaluation of the fermented dairy foods from a new perspective.
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Affiliation(s)
- Rui Liu
- Laboratory of Biophysics, School of Biological Sciences, and Institute of Microbiology, Seoul National UniversitySeoul, South Korea
| | - Andrew H Kim
- Laboratory of Biophysics, School of Biological Sciences, and Institute of Microbiology, Seoul National UniversitySeoul, South Korea
| | - Min-Kyu Kwak
- Laboratory of Biophysics, School of Biological Sciences, and Institute of Microbiology, Seoul National UniversitySeoul, South Korea
| | - Sa-Ouk Kang
- Laboratory of Biophysics, School of Biological Sciences, and Institute of Microbiology, Seoul National UniversitySeoul, South Korea
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36
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Properties of the Amide Bond Involving Proline 4,5-methanologues: an Experimental and Theoretical Study. Isr J Chem 2016. [DOI: 10.1002/ijch.201600106] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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37
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Molecular diversity in cyclization of Ugi-products leading to the synthesis of 2,5-diketopiperazines: computational study. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2750-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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38
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Faizi MSH, Ahmad M, Golenya IA. Crystal structure of 4-[4-(eth-oxy-carbon-yl)piperazin-1-yl]benzoic acid. Acta Crystallogr E Crystallogr Commun 2016; 72:1267-1269. [PMID: 27920914 PMCID: PMC5120704 DOI: 10.1107/s2056989016012482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 08/02/2016] [Indexed: 11/19/2022]
Abstract
The asymmetric unit of the title compound, C14H18N2O4, contains two independent mol-ecules (A and B) which have essentially the same conformation. The piperazine rings adopts chair conformations with the N atoms out of plane. The dihedral angles formed by the four approximately planar C atoms of the piperazine ring and the benzene ring is 30.8 (5)° in mol-ecule A and 30.6 (5)° in mol-ecule B. In the crystal, mol-ecules A and B are connected by a pair of O-H⋯O hydrogen bonds, forming a dimer with graph-set notation R22(8). Weak C-H⋯O hydrogen bonds connect the dimers, forming zigzag chains along [001].
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Affiliation(s)
| | - Musheer Ahmad
- Department of Applied Chemistry, Aligarh Muslim University, Aligarh 202 002, India
| | - Irina A. Golenya
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64 Vladimirska Str., Kiev 01601, Ukraine
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39
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Montgomery T, Rawal VH. Palladium-Catalyzed Modular Synthesis of Substituted Piperazines and Related Nitrogen Heterocycles. Org Lett 2016; 18:740-3. [PMID: 26824482 PMCID: PMC4991562 DOI: 10.1021/acs.orglett.5b03708] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Indexed: 11/30/2022]
Abstract
We report here a novel method for the modular synthesis of highly substituted piperazines and related bis-nitrogen heterocycles via a palladium-catalyzed cyclization reaction. The process couples two of the carbons of a propargyl unit with various diamine components to provide nitrogen heterocycles in generally good to excellent yields and high regio- and stereochemical control.
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Affiliation(s)
- Thomas
D. Montgomery
- Department
of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Viresh H. Rawal
- Department
of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
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40
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Li Y, Li F, Zhu Y, Li X, Zhou Z, Liu C, Zhang W, Tang M. DFT study on reaction mechanisms of cyclic dipeptide generation. Struct Chem 2016. [DOI: 10.1007/s11224-016-0740-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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41
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Hernández-Vázquez E, Miranda LD. Practical synthesis and cytotoxic evaluation of the pyrazino[1,2-b]-isoquinoline ring system. Org Biomol Chem 2016; 14:4875-84. [DOI: 10.1039/c6ob00431h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A multicomponent three-step synthesis of pyrazino[1-2b]isoquinolines is described. A preliminary cytotoxic screening against cancer cell lines was performed.
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Affiliation(s)
- Eduardo Hernández-Vázquez
- Departamento de Química Orgánica
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior S.N
- Ciudad Universitaria
| | - Luis D. Miranda
- Departamento de Química Orgánica
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior S.N
- Ciudad Universitaria
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42
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García-González MC, Hernández-Vázquez E, Gordillo-Cruz RE, Miranda LD. Ugi-derived dehydroalanines as a pivotal template in the diversity oriented synthesis of aza-polyheterocycles. Chem Commun (Camb) 2015; 51:11669-72. [PMID: 26102372 DOI: 10.1039/c5cc02927a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Various readily available, Ugi-derived dehydroalanines were used as pivotal templates to easily and efficiently assemble diverse pharmacologically important polyheterocyclic systems through cascade palladium-catalyzed C-C bond formation processes. Allyl, homoallyl and propargylamine led to the formation of benzopyrrolizidinones, benzoindolizidinones and pyrazinoisoquinolines, respectively, while benzylamines and o-bromobenzylamines were used as precursors of tetracyclic-fused systems and pyrazionoisoquinolindiones.
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Affiliation(s)
- Ma Carmen García-González
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior S.N., Ciudad Universitaria, Coyoacán, México, D.F. O4510, Mexico.
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43
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Mohammadi A, Khalili B, Tahavor M. Novel push-pull heterocyclic azo disperse dyes containing piperazine moiety: Synthesis, spectral properties, antioxidant activity and dyeing performance on polyester fibers. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 150:799-805. [PMID: 26112103 DOI: 10.1016/j.saa.2015.06.024] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 05/30/2015] [Accepted: 06/02/2015] [Indexed: 06/04/2023]
Abstract
Six novel push-pull azo disperse dyes were synthesized via classical azo coupling reaction using 2-amino-thiazolyl derivatives as the diazo components and 1-(4-bromobenzyl)-4-phenylpiperazine as a key coupling intermediate. The structures of the dyes and synthesized intermediate were confirmed by FT-IR, (1)H NMR, (13)C NMR and UV-vis analyses. The solvatochromic behavior of the dyes was studied in a set of 10 solvents of different polarity and considerable results were obtained. The prepared heterocyclic azo dyes were applied for dyeing polyester fibers and their dyeing properties were studied. The fastness properties of the dyed fabrics such as wash, light and rubbing fastness degrees were measured by standard methods. Investigation of antioxidant activity of compounds was carried out by ferric reducing antioxidant power (FRAP) method. The synthesized dyes exhibited significant antioxidant activities.
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Affiliation(s)
- Asadollah Mohammadi
- Department of Chemistry, Faculty of Sciences, University of Guilan, PO Box 41335-1914, Rasht, Iran.
| | - Behzad Khalili
- Department of Chemistry, Faculty of Sciences, University of Guilan, PO Box 41335-1914, Rasht, Iran
| | - Marzieh Tahavor
- Department of Chemistry, Faculty of Sciences, University of Guilan, PO Box 41335-1914, Rasht, Iran
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44
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Christmann M, Hu J, Kitamura M, Stoltz B. Tetrahedron reports on organic chemistry. Tetrahedron 2015. [DOI: 10.1016/s0040-4020(15)00744-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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45
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Naini SR, Lalancette RA, Gorlova O, Ramakrishna KVS, Yadav JS, Ranganathan S. Sulfate Encapsulation in Supramolecular Structures fromL-Asparagine-Derived 2,5-Diketopiperazine Scaffolds: Anion Binding. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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46
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A general method for the facile synthesis of optically active 2-substituted piperazines via functionalized 2,5-diketopiperazines. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.06.058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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47
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Torsello M, Orian L, De Zotti M, Saini R, Formaggio F, Polimeno A. Energetics of oxo- and thio-dipeptide formation via amino acid condensation: a systematic computational analysis. Phys Chem Chem Phys 2014; 16:17515-22. [DOI: 10.1039/c4cp02680b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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48
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Ji F, Yi WB, Cai C. Synthesis of 2,5-Diketopiperazine Derivatives Using 2-Isocyanophenyl 4-Methylbenzoate as a Fragrant Convertible Isocyanide. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1684] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Fei Ji
- Chemical Engineering College; Nanjing University of Science and Technology; Nanjing 210094 China
| | - Wen-Bin Yi
- Chemical Engineering College; Nanjing University of Science and Technology; Nanjing 210094 China
| | - Chun Cai
- Chemical Engineering College; Nanjing University of Science and Technology; Nanjing 210094 China
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49
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M. Beauchemin A, Das Neves N, Raymond M. Expedient Synthesis of 2-Oxopiperazines Using a SN2 / Cope-Type Hydroamination Sequence. HETEROCYCLES 2014. [DOI: 10.3987/com-13-s(s)18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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50
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Dufour E, Moni L, Bonnat L, Chierici S, Garcia J. ‘Clickable’ 2,5-diketopiperazines as scaffolds for ligation of biomolecules: their use in Aβ inhibitor assembly. Org Biomol Chem 2014; 12:4964-74. [DOI: 10.1039/c4ob00541d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The synthesis of 1,3,6-trisubstituted-2,5-diketopiperazine scaffolds bearing up to three ‘clickable’ sites for further oxime bond or alkyne–azide cycloaddition ligations is described.
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Affiliation(s)
- E. Dufour
- Département de Chimie Moléculaire
- CNRS UMR 5250
- ICMG FR 2607
- Equipe I2BM
- Université Joseph Fourier
| | - L. Moni
- Università degli Studi di Genova
- Dipartimento di Chimica e Chimica Industriale
- 16146 Genova, Italy
| | - L. Bonnat
- Département de Chimie Moléculaire
- CNRS UMR 5250
- ICMG FR 2607
- Equipe I2BM
- Université Joseph Fourier
| | - S. Chierici
- Département de Chimie Moléculaire
- CNRS UMR 5250
- ICMG FR 2607
- Equipe I2BM
- Université Joseph Fourier
| | - J. Garcia
- Département de Chimie Moléculaire
- CNRS UMR 5250
- ICMG FR 2607
- Equipe I2BM
- Université Joseph Fourier
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