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Naikoo RA, Kumar R, Sharma R, Mahajan D, Bhargava G. Highly regioselective 6- exo-dig iodo/bromo cyclizations of functionalized 5-amino propargyl pyrimidinones: an efficient synthesis of functionalized pteridines. RSC Adv 2023; 13:31891-31896. [PMID: 37915442 PMCID: PMC10616752 DOI: 10.1039/d3ra05651a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Accepted: 10/20/2023] [Indexed: 11/03/2023] Open
Abstract
The manuscript describes the highly regioselective 6-exo-dig iodo/bromo cyclization of functionalized N-propagyl-amino-pyrimidinones under ambient conditions. The cyclization afforded functionalized pteridines in excellent yields. The optimized procedures are mild, operationally simple and working successfully with different substrates. The synthesis of functionalized pteridines is of great significance because of their potential pharmacological profile.
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Affiliation(s)
- Rayees Ahmad Naikoo
- Department of Chemical Sciences, I. K. Gujral Punjab Technical University Kapurthala Punjab 144603 India
| | - Rupesh Kumar
- Department of Chemical Sciences, I. K. Gujral Punjab Technical University Kapurthala Punjab 144603 India
| | - Rashmi Sharma
- Department of Chemical Sciences, I. K. Gujral Punjab Technical University Kapurthala Punjab 144603 India
| | - Dinesh Mahajan
- Translational Health Science and Technology Institute Faridabad Haryana India
| | - Gaurav Bhargava
- Department of Chemical Sciences, I. K. Gujral Punjab Technical University Kapurthala Punjab 144603 India
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Wróbel A, Drozdowska D. Recent Design and Structure-Activity Relationship Studies on the Modifications of DHFR Inhibitors as Anticancer Agents. Curr Med Chem 2021; 28:910-939. [PMID: 31622199 DOI: 10.2174/0929867326666191016151018] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 09/25/2019] [Accepted: 09/27/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Dihydrofolate reductase (DHFR) has been known for decades as a molecular target for antibacterial, antifungal and anti-malarial treatments. This enzyme is becoming increasingly important in the design of new anticancer drugs, which is confirmed by numerous studies including modelling, synthesis and in vitro biological research. This review aims to present and discuss some remarkable recent advances in the research of new DHFR inhibitors with potential anticancer activity. METHODS The scientific literature of the last decade on the different types of DHFR inhibitors has been searched. The studies on design, synthesis and investigation structure-activity relationships were summarized and divided into several subsections depending on the leading molecule and its structural modification. Various methods of synthesis, potential anticancer activity and possible practical applications as DHFR inhibitors of new chemical compounds were described and discussed. RESULTS This review presents the current state of knowledge on the modification of known DHFR inhibitors and the structures and searches for about eighty new molecules, designed as potential anticancer drugs. In addition, DHFR inhibitors acting on thymidylate synthase (TS), carbon anhydrase (CA) and even DNA-binding are presented in this paper. CONCLUSION Thorough physicochemical characterization and biological investigations highlight the structure-activity relationship of DHFR inhibitors. This will enable even better design and synthesis of active compounds, which would have the expected mechanism of action and the desired activity.
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Affiliation(s)
- Agnieszka Wróbel
- Department of Organic Chemistry, Faculty of Pharmacy, Medical University, Białystok, Poland
| | - Danuta Drozdowska
- Department of Organic Chemistry, Faculty of Pharmacy, Medical University, Białystok, Poland
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Mekheimer RA, Hayallah AM, Moustafa MS, Al-Mousawi SM, Abd-Elmonem M, Mostafa SM, Abo Elsoud FA, Sadek KU. Microwave-assisted reactions: Efficient and versatile one-step synthesis of 8-substituted xanthines and substituted pyrimidopteridine-2,4,6,8-tetraones under controlled microwave heating. GREEN PROCESSING AND SYNTHESIS 2021; 10:201-207. [DOI: 10.1515/gps-2021-0014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Abstract
We report herein a simple and efficient one-step synthesis of 8-substituted xanthines and substituted pyrimidopteridine-2,4,6,8-tetraones via reaction of 1,3-dimethyl-5,6-diaminouracil 1 with activated double bond systems 2 assisted by controlled microwave irradiation. The obtained heterocycles are privileged biologically relevant scaffolds.
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Affiliation(s)
| | - Alaa M. Hayallah
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Deraya University , Minia , Egypt
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Assiut University , Assiut 71526 , Egypt
| | - Moustafa Sherief Moustafa
- Department of Chemistry, Faculty of Science, Kuwait University , P. O. Box 12613 , Safat 13060 , Kuwait
| | - Saleh Mohammed Al-Mousawi
- Department of Chemistry, Faculty of Science, Kuwait University , P. O. Box 12613 , Safat 13060 , Kuwait
| | - Mohamed Abd-Elmonem
- Chemistry Department, Faculty of Science, Minia University , Minia 61519 , Egypt
| | - Sara M. Mostafa
- Chemistry Department, Faculty of Science, Minia University , Minia 61519 , Egypt
| | - Fatma A. Abo Elsoud
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Deraya University , Minia , Egypt
| | - Kamal Usef Sadek
- Chemistry Department, Faculty of Science, Minia University , Minia 61519 , Egypt
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Singh GS. Advances in synthesis and chemistry of aziridines. ADVANCES IN HETEROCYCLIC CHEMISTRY 2019. [DOI: 10.1016/bs.aihch.2018.12.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Ruiz-Alcaraz AJ, Carmona-Martínez V, Guirado A, Gálvez J, Martínez-Esparza M, García-Peñarrubia P. Anti-leukemia activity of 4-amino-2-aryl-6,9-dichlorobenzo[g]pteridines. Naunyn Schmiedebergs Arch Pharmacol 2018; 392:219-227. [PMID: 30465054 DOI: 10.1007/s00210-018-1587-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 11/12/2018] [Indexed: 11/28/2022]
Abstract
Pteridines are bicyclic heterocyclic compounds with a pyrazino[2,3-d]pyrimidine nucleus that have shown a wide range of therapeutic utilities. Concretely, 4-aminopteridine derivatives have demonstrated both anti-inflammatory and anti-cancer properties, and some of them, such as methotrexate, are profusely used in medical practice. We have recently synthesized and tested the biological activity of a novel series of 4-amino-2-aryl-6,9-dichlorobenzo[g]pteridines, finding that they present anti-inflammatory properties, as they were able to inhibit in vitro the production of pro-inflammatory cytokines TNF-α and IL-6. Now, we have evaluated the anti-tumor potential of these compounds on HL-60 and K562 leukemia cell lines. Cells growing at exponential rate were exposed to decreasing doses of each compound, from 50 to 0.39 μM, for 24, 48, and 72 h. Cell viability was tested by MTT assay and cell death fashion determined by annexin V/propidium iodide assay. The cytotoxicity of the compounds was determined in differentiated macrophage-like HL-60 cells and in human peripheral blood mononuclear cells to evaluate the potential side effects on quiescent tumor cells and normal cells, respectively. Among the series, compounds 1a, 1b, 1g, 1j, and 1k showed anti-proliferative activity. Compounds 1j and 1k were active against both HL-60 and K562 cells, with a lower IC50 against HL-60 cells. Compounds 1a, 1b, and 1g had a great cytotoxic activity against HL-60, but they were far less potent against K562 cells. None had side effects in differentiated tumor cells or in human peripheral blood mononuclear cells. In conclusion, our results demonstrate that some compounds of this series of 4-amino-2-aryl-6,9-dichlorobenzo[g]pteridines have anti-cancer properties in vitro.
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Affiliation(s)
- Antonio J Ruiz-Alcaraz
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, School of Medicine, IMIB and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain.
| | - Violeta Carmona-Martínez
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, School of Medicine, IMIB and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
| | - Antonio Guirado
- Departamento de Química Orgánica, Universidad de Murcia, Campus de Espinardo, 30100, Murcia, Spain
| | - Jesús Gálvez
- Departamento de Química Física, Universidad de Murcia, Campus de Espinardo, 30100, Murcia, Spain
| | - María Martínez-Esparza
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, School of Medicine, IMIB and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
| | - Pilar García-Peñarrubia
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, School of Medicine, IMIB and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain.
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Synthesis and preliminary antiproliferative activity of new pteridin-7(8H)-one derivatives. Eur J Med Chem 2018; 143:1396-1405. [DOI: 10.1016/j.ejmech.2017.10.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 10/11/2017] [Accepted: 10/13/2017] [Indexed: 11/19/2022]
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Geng PF, Wang CC, Li ZH, Hu XN, Zhao TQ, Fu DJ, Zhao B, Yu B, Liu HM. Design, synthesis and preliminary biological evaluation of 5,8-dihydropteridine-6,7-diones that induce apoptosis and suppress cell migration. Eur J Med Chem 2017; 143:1959-1967. [PMID: 29133051 DOI: 10.1016/j.ejmech.2017.11.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 10/12/2017] [Accepted: 11/03/2017] [Indexed: 12/26/2022]
Abstract
Pteridines are an important class of fused heterocycles found in natural products and drug molecules, and have shown diverse biological activities. A focused library of 5,8-dihydropteridine-6,7-dione derivatives were designed and evaluated for their antiproliferative activity against MGC-803, SGC-7901, A549 and PC-3 cancer cell lines. The SARs studies highlighted the importance of the piperazine substituted 5,8-dihydropteridine-6,7-dione frameworks for the activity and revealed essential structural elements. Among these compounds, compound 5n displayed the most potent and broad-spectrum antiproliferative inhibition against the tested cell lines and was sensitive to MGC-803 cell line, slightly more potent than 5-FU. Preliminary mechanistic studies showed that compound 5n could inhibit the colony formation and migration of MGC-803 cells. Besides, flow cytometry analysis showed that compound 5n concentration-dependently induced apoptosis of MGC-803 cells. Our studies suggest that the piperazine substituted 5,8-dihydropteridine-6,7-dione frameworks may be regarded as new chemotypes for designing effective antitumor agents targeting gastric cancer cells.
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Affiliation(s)
- Peng-Fei Geng
- Key Laboratory of Advanced Drug Preparation Technologies (Zhengzhou University), Ministry of Education, Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; Key Laboratory of Henan Province for Drug Quality and Evaluation, PR China
| | - Cong-Cong Wang
- Key Laboratory of Advanced Drug Preparation Technologies (Zhengzhou University), Ministry of Education, Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; Key Laboratory of Henan Province for Drug Quality and Evaluation, PR China
| | - Zhong-Hua Li
- Key Laboratory of Advanced Drug Preparation Technologies (Zhengzhou University), Ministry of Education, Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; Key Laboratory of Henan Province for Drug Quality and Evaluation, PR China
| | - Xiao-Ning Hu
- Key Laboratory of Advanced Drug Preparation Technologies (Zhengzhou University), Ministry of Education, Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; Key Laboratory of Henan Province for Drug Quality and Evaluation, PR China
| | - Tao-Qian Zhao
- Key Laboratory of Advanced Drug Preparation Technologies (Zhengzhou University), Ministry of Education, Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; Key Laboratory of Henan Province for Drug Quality and Evaluation, PR China
| | - Dong-Jun Fu
- Key Laboratory of Advanced Drug Preparation Technologies (Zhengzhou University), Ministry of Education, Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; Key Laboratory of Henan Province for Drug Quality and Evaluation, PR China
| | - Bing Zhao
- Key Laboratory of Advanced Drug Preparation Technologies (Zhengzhou University), Ministry of Education, Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; Key Laboratory of Henan Province for Drug Quality and Evaluation, PR China
| | - Bin Yu
- Key Laboratory of Advanced Drug Preparation Technologies (Zhengzhou University), Ministry of Education, Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; Key Laboratory of Henan Province for Drug Quality and Evaluation, PR China.
| | - Hong-Min Liu
- Key Laboratory of Advanced Drug Preparation Technologies (Zhengzhou University), Ministry of Education, Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; Key Laboratory of Henan Province for Drug Quality and Evaluation, PR China.
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Tian C, Wang M, Han Z, Fang F, Zhang Z, Wang X, Liu J. Design, synthesis and biological evaluation of novel 6-substituted pyrrolo [3,2-d] pyrimidine analogues as antifolate antitumor agents. Eur J Med Chem 2017; 138:630-643. [PMID: 28711701 DOI: 10.1016/j.ejmech.2017.07.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 06/30/2017] [Accepted: 07/02/2017] [Indexed: 11/30/2022]
Abstract
A series of novel 6-substituted pyrrolo[3,2-d]pyrimidine analogues (10a, 11a-13a, 15a, 17a, 18a, 27a and 28a) have been designed and synthesized as antifolate antitumor agents. The anti-proliferative activities of these compounds against HL60, A549, H1299, Hela, HCT116 and HT29 tumor cells were evaluated. Most of the compounds exhibited micromolar anti-proliferative potencies. Compound 15a, the most potent one, has GI50 value of 0.73, 1.72, and 8.92 μM against A549, H1299 and HL60 cells, respectively. The cell cycle distribution assay displayed that 15a could increase the accumulation of G2/M-phase cells. 15a showed low potency in induction of apoptosis. However, the inhibition of A549 cell colony formation was observed. These indicated that the tumor cell death relied on the irreversible effect of 15a on clonogenicity and cell proliferation. The identification of targeted pathway of 15a implied that the anti-proliferative potencies of 15a probably act through dual inhibition of thymidylate synthase (TS) and dihydrofolate reductase (DHFR).
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Affiliation(s)
- Chao Tian
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Meng Wang
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Zifei Han
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Fang Fang
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Zhili Zhang
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Xiaowei Wang
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Junyi Liu
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China; State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China.
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Tian C, Zhang Z, Zhou S, Yuan M, Wang X, Liu J. Synthesis, Antifolate and Anticancer Activities of N(5) -Substituted 8,10-Dideazatetrahydrofolate Analogues. Chem Biol Drug Des 2015; 87:444-54. [PMID: 26518975 DOI: 10.1111/cbdd.12681] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Revised: 09/07/2015] [Accepted: 10/22/2015] [Indexed: 11/30/2022]
Abstract
Based on our previous work, seven N(5) -substituted 8,10-dideazatetrahydrofolate analogues and one 8-deazatetrahydrofolate analogue were designed and synthesized as human dihydrofolate reductase (hDHFR) inhibitors. All compounds were assayed versus DHFR and five different cancer cell lines. The biological assay indicated that replacing N(10) with carbon would significantly increase inhibitory activities against DHFR and cytotoxicities against cancer cell lines. Compound 19a with 4-amino and N(5) -formyl showed great antitumour activities against HL-60, Bel-7402 and BGC823 which were much better than MTX.
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Affiliation(s)
- Chao Tian
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Zhili Zhang
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Shouxin Zhou
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Mengmeng Yuan
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Xiaowei Wang
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Junyi Liu
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China.,State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, 100191, China
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Deng X, Guo Y, Tian C, Liu J, Wang X, Zhang Z. Design, synthesis and activities of aziridine derivatives of N5-methyltetrahydrofolate against methionine synthase. Chem Res Chin Univ 2015. [DOI: 10.1007/s40242-015-5194-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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11
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Guirado A, López Sánchez JI, Ruiz-Alcaraz AJ, García-Peñarrubia P, Bautista D, Gálvez J. First synthesis and biological evaluation of 4-amino-2-aryl-6,9-dichlorobenzo[g]pteridines as inhibitors of TNF-α and IL-6. Eur J Med Chem 2013; 66:269-75. [DOI: 10.1016/j.ejmech.2013.05.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Accepted: 05/16/2013] [Indexed: 12/31/2022]
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Zhang Z, Tian C, Zhou S, Wang W, Guo Y, Xia J, Liu Z, Wang B, Wang X, Golding BT, Griff RJ, Du Y, Liu J. Mechanism-based design, synthesis and biological studies of N5-substituted tetrahydrofolate analogs as inhibitors of cobalamin-dependent methionine synthase and potential anticancer agents. Eur J Med Chem 2012; 58:228-36. [DOI: 10.1016/j.ejmech.2012.09.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Revised: 08/17/2012] [Accepted: 09/23/2012] [Indexed: 10/27/2022]
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Zhou S, Tian C, Li C, Guo Y, Wang X, Liu J, Zhang Z. Novel synthesis of 8-deaza-5,6,7,8-tetrahydroaminopterin analogues via an aziridine intermediate. Molecules 2012; 17:5604-14. [PMID: 22576230 PMCID: PMC6268183 DOI: 10.3390/molecules17055604] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Revised: 05/03/2012] [Accepted: 05/05/2012] [Indexed: 11/21/2022] Open
Abstract
An efficient method for the construction of the tetrahydrofolate skeleton is described. Starting from pterin analogues and aromatic amines, 8-deaza-5,6,7,8-tetrahydroaminopterin derivatives and the heterocyclic benzoyl isosteres were synthesized via a novel aziridine intermediate. Following this method, the byproducts of carbon-nitrogen bond hydrogenolysis in traditional synthetic strategy can be completely avoided.
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Affiliation(s)
- Shouxin Zhou
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Chao Tian
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Chao Li
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Ying Guo
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Xiaowei Wang
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Junyi Liu
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China
| | - Zhili Zhang
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
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Zhang Z, Liu J, Liu W, Wang X, Cheng Z, Liu J. Synthesis of 2-amino-4-hydroxyl-6-hydroxymethyl-5,6,7,8-tetrahydropyrido[3,2-d]pyrimidine from 2-amino-4-hydroxyl-6-methylpyrimidine. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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