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Kumari A, Yadav P, Rawat V, Maurya RA, Islam MS, Eldesoky GE, Puri SK, Verma VP. Novel saturated 1,2,4-trioxanes and their antimalarial activity against multidrug resistant Plasmodium yoelii nigeriensis in Swiss mice model via oral route. Bioorg Med Chem Lett 2024; 108:129801. [PMID: 38777279 DOI: 10.1016/j.bmcl.2024.129801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/09/2024] [Accepted: 05/18/2024] [Indexed: 05/25/2024]
Abstract
Novel saturated 6-(4'-aryloxy phenyl) vinyl 1,2,4-trioxanes 12a(1-3)-12d(1-3) and 13a(1-3)-13d(1-3) have been designed and synthesized, in one single step from diimide reduction of 11a(1-3)-11d(1-3). All the newly synthesized trioxanes were evaluated for their antimalarial activity against multi-drug resistant Plasmodium yoelii nigeriensis via oral route. Cyclopentane-based trioxanes 12b1, 12c1 and 12d1, provided 100 % protection to the infected mice at 24 mg/kg × 4 days. The most active compound of the series, trioxane 12b1, provided 100 % protection even at 12 mg/kg × 4 days and 60 % protection at 6 mg/kg × 4 days. The currently used drug, β-arteether provides only 20 % protection at 24 mg/kg × 4 days.
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Affiliation(s)
- Akriti Kumari
- Department of Chemistry, Banasthali University, Banasthali Newai, 304022 Rajasthan, India
| | - Priyanka Yadav
- Department of Chemistry, Banasthali University, Banasthali Newai, 304022 Rajasthan, India
| | - Varun Rawat
- Department of Chemistry, Banasthali University, Banasthali Newai, 304022 Rajasthan, India
| | - Ram Avatar Maurya
- Applied Organic Chemistry Group, Chemical Science & Technology Division, CSIR-North East Institute of Science & Technology, Jorhat, Assam 785006, India
| | | | - Gaber E Eldesoky
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Sunil K Puri
- Parasitology Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India
| | - Ved Prakash Verma
- Department of Chemistry, Banasthali University, Banasthali Newai, 304022 Rajasthan, India; Department of Education in Science and Mathematics (DESM), Regional Institute of Education, Bhubaneswar 751022, India.
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Rathi K, Shukla M, Hassam M, Shrivastava R, Rawat V, Prakash Verma V. Recent advances in the synthesis and antimalarial activity of 1,2,4-trioxanes. Bioorg Chem 2024; 143:107043. [PMID: 38134523 DOI: 10.1016/j.bioorg.2023.107043] [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: 09/20/2023] [Revised: 11/29/2023] [Accepted: 12/15/2023] [Indexed: 12/24/2023]
Abstract
The increasing resistance of various malarial parasite strains to drugs has made the production of a new, rapid-acting, and efficient antimalarial drug more necessary, as the demand for such drugs is growing rapidly. As a major global health concern, various methods have been implemented to address the problem of drug resistance, including the hybrid drug concept, combination therapy, the development of analogues of existing medicines, and the use of drug resistance reversal agents. Artemisinin and its derivatives are currently used against multidrug- resistant P. falciparum species. However, due to its natural origin, its use has been limited by its scarcity in natural resources. As a result, finding a substitute becomes more crucial, and the peroxide group in artemisinin, responsible for the drugs biological action in the form of 1,2,4-trioxane, may hold the key to resolving this issue. The literature suggests that 1,2,4-trioxanes have the potential to become an alternative to current malaria drugs, as highlighted in this review. This is why 1,2,4-trioxanes and their derivatives have been synthesized on a large scale worldwide, as they have shown promising antimalarial activity in vivo and in vitro against Plasmodium species. Consequently, the search for a more convenient, environment friendly, sustainable, efficient, and effective synthetic pathway for the synthesis of 1,2,4-trioxanes continues. The aim of this work is to provide a comprehensive analysis of the synthesis and mechanism of action of 1,2,4-trioxanes. This systematic review highlights the most recent summaries of derivatives of 1,2,4-trioxane compounds and dimers with potential antimalarial activity from January 1988 to 2023.
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Affiliation(s)
- Komal Rathi
- Department of Chemistry, Banasthali University, Banasthali Newai 304022, Rajasthan, India
| | - Monika Shukla
- Department of Chemistry, Banasthali University, Banasthali Newai 304022, Rajasthan, India
| | | | - Rahul Shrivastava
- Department of Chemistry, Manipal University Jaipur, Jaipur (Rajasthan), VPO- Dehmi-Kalan, Off Jaipur-Ajmer Express Way, Jaipur, Rajasthan 30300, India
| | - Varun Rawat
- School of Chemistry, Tel Aviv University, Tel Aviv 6997801, Israel.
| | - Ved Prakash Verma
- Department of Chemistry, Banasthali University, Banasthali Newai 304022, Rajasthan, India.
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Yadav P, Naikade NK, Hassam M, Singh AS, Singh C, Puri SK, Prakash Verma V. Novel amino- and hydroxy-functionalized 1,2,4-trioxanes and their antimalarial activity against multidrug-resistant Plasmodium yoelii nigeriensis in Swiss mice via intramuscular and oral route. Bioorg Med Chem Lett 2024; 97:129561. [PMID: 37967655 DOI: 10.1016/j.bmcl.2023.129561] [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: 09/16/2023] [Revised: 10/19/2023] [Accepted: 11/11/2023] [Indexed: 11/17/2023]
Abstract
Following the economic and social state of humanity, Malaria is categorized as one of the life-threatening illness epidemics in under developed countries. For the eradication of the same, 1,2,4-trioxanes 17a1-a2, 17b1-b2, 17c1-c2 15a-c, 18 and 19 have been synthesized continuing the creation of a novel series. Additionally, these novel compounds were tested for their effectiveness against the multidrug-resistant Plasmodium yoelii nigeriensis in mice model using both oral and intramuscular (im) administration routes. The two most potent compounds of the series, 17a1 and 17a2, demonstrated 100 % protection at 48 mg/kg x 4 days via oral route, which is twice as potent as artemisinin. In this model artemisinin provided 100 % protection at a dose of 48 mg/kg × 4 days and 80 % protection at 24 mg/kg × 4 days via im route.
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Affiliation(s)
- Priyanka Yadav
- Department of Chemistry, Banasthali University, Banasthali Newai, 304022 Rajasthan, India
| | - Niraj Krishna Naikade
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India.
| | - Mohammad Hassam
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India
| | - Ajit Shankar Singh
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India
| | - Chandan Singh
- Department of Chemistry, Banasthali University, Banasthali Newai, 304022 Rajasthan, India
| | - Sunil K Puri
- Parasitology Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India
| | - Ved Prakash Verma
- Department of Chemistry, Banasthali University, Banasthali Newai, 304022 Rajasthan, India.
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Shukla M, Rathi K, Hassam M, Yadav DK, Karnatak M, Rawat V, Verma VP. An overview on the antimalarial activity of 1,2,4-trioxanes, 1,2,4-trioxolanes and 1,2,4,5-tetraoxanes. Med Res Rev 2024; 44:66-137. [PMID: 37222435 DOI: 10.1002/med.21979] [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: 03/01/2022] [Revised: 05/04/2023] [Accepted: 05/08/2023] [Indexed: 05/25/2023]
Abstract
The demand for novel, fast-acting, and effective antimalarial medications is increasing exponentially. Multidrug resistant forms of malarial parasites, which are rapidly spreading, pose a serious threat to global health. Drug resistance has been addressed using a variety of strategies, such as targeted therapies, the hybrid drug idea, the development of advanced analogues of pre-existing drugs, and the hybrid model of resistant strains control mechanisms. Additionally, the demand for discovering new potent drugs grows due to the prolonged life cycle of conventional therapy brought on by the emergence of resistant strains and ongoing changes in existing therapies. The 1,2,4-trioxane ring system in artemisinin (ART) is the most significant endoperoxide structural scaffold and is thought to be the key pharmacophoric moiety required for the pharmacodynamic potential of endoperoxide-based antimalarials. Several derivatives of artemisinin have also been found as potential treatments for multidrug-resistant strain in this area. Many 1,2,4-trioxanes, 1,2,4-trioxolanes, and 1,2,4,5-tetraoxanes derivatives have been synthesised as a result, and many of these have shown promise antimalarial activity both in vivo and in vitro against Plasmodium parasites. As a consequence, efforts to develop a functionally straight-forward, less expensive, and vastly more effective synthetic pathway to trioxanes continue. This study aims to give a thorough examination of the biological properties and mode of action of endoperoxide compounds derived from 1,2,4-trioxane-based functional scaffolds. The present system of 1,2,4-trioxane, 1,2,4-trioxolane, and 1,2,4,5-tetraoxane compounds and dimers with potentially antimalarial activity will be highlighted in this systematic review (January 1963-December 2022).
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Affiliation(s)
- Monika Shukla
- Department of Chemistry, Banasthali University, Newai, Rajasthan, India
| | - Komal Rathi
- Department of Chemistry, Banasthali University, Newai, Rajasthan, India
| | - Mohammad Hassam
- Department of Chemistry, Chemveda Life Sciences Pvt Ltd, Hyderabad, Telangana, India
| | - Dinesh Kumar Yadav
- Department of Chemistry, Mohanlal Sukhadia University, Udaipur, Rajasthan, India
| | - Manvika Karnatak
- Department of Chemistry, Banasthali University, Newai, Rajasthan, India
| | - Varun Rawat
- School of Chemistry, Tel Aviv University, Tel Aviv, Israel
| | - Ved Prakash Verma
- Department of Chemistry, Banasthali University, Newai, Rajasthan, India
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Kumari A, Karnatak M, Singh AS, Hassam M, Rawat V, Islam MS, Al-Majid AM, Singh M, Verma VP. Mechanistic Evaluation of the Stability of Arylvinyl-1,2,4-trioxanes under Acidic Conditions for Their Oral Administration as an Antimalarial Drug. ACS OMEGA 2022; 7:17984-17994. [PMID: 35664617 PMCID: PMC9161402 DOI: 10.1021/acsomega.2c01321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 05/04/2022] [Indexed: 06/15/2023]
Abstract
A mechanistic approach to understand the course of metabolism for synthetic 1,2,4-trioxanes, potent antimalarial compounds, to evaluate their bioavailability for antimalarial action has been studied in the present work. It is an important parameter to study the course of metabolism of a drug candidate molecule when administered via oral route during its journey from oral intake to its target site. From the pharmacokinetics point of view, it determines the bioavailability of an active drug or a prodrug at the target point. In this work, synthetic arylvinyl-1,2,4-trioxanes 1a-u have been evaluated under various acidic conditions to mimic the milieu of the stomach (pH between 1.5 and 3.5) through which they have to pass when administered orally. The effect of acid on trioxanes led to their degradation into corresponding ketones and glyoxal. Under such acidic conditions glyoxal polymerized to form a nonisolable condensate product. The study indicates that the actual bioavailability of the drug is far less than the administered dose.
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Affiliation(s)
- Akriti Kumari
- Department
of Chemistry, Banasthali University, Banasthali Newai 304022, Rajasthan, India
| | - Manvika Karnatak
- Department
of Chemistry, Banasthali University, Banasthali Newai 304022, Rajasthan, India
| | - Ajit Shankar Singh
- Defence
Materials and Stores Research Development Establishment, G.T. Road, Kanpur 208013, India
| | | | - Varun Rawat
- Amity
School of Applied Sciences, Amity University
Haryana, Gurugram 122413, India
| | - Mohammad Shahidul Islam
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Abdullah Mohammed Al-Majid
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mandeep Singh
- Nuchem
Sciences, Saint-Laurent, Quebec H4R2N6, Canada
| | - Ved Prakash Verma
- Department
of Chemistry, Banasthali University, Banasthali Newai 304022, Rajasthan, India
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Synthesis, molecular docking and dynamics study of novel epoxide derivatives of 1,2,4-trioxanes as antimalarial agents. Struct Chem 2022. [DOI: 10.1007/s11224-022-01885-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Karnatak M, Hassam M, Vanangamudi M, Sharma S, Kumar Yadav D, Singh C, Puri SK, Rawat V, Prakash Verma V. Novel naphthyl based 1,2,4-trioxanes: Synthesis and in vivo efficacy in the Plasmodium yoelii nigeriensis in Swiss mice. Bioorg Med Chem Lett 2021; 51:128372. [PMID: 34547418 DOI: 10.1016/j.bmcl.2021.128372] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/12/2021] [Accepted: 09/12/2021] [Indexed: 10/20/2022]
Abstract
A new series of 1,2,4-trioxanes 9a1-a4, 9b1-b4, 10-13 and 9c1-c4 were synthesized and evaluated against multidrug-resistant Plasmodium yoelii nigeriensis in Swiss mice via oral and intramuscular (i.m.) routes. Adamantane-based trioxane 9b4, the most active compound of the series, provided 100% protection to the infected mice at the dose 48 mg/kg × 4 days and 100% clearance of parasitemia at the dose 24 mg/kg × 4 days via oral route. Adamantane-based trioxane 9b4, is twice active than artemisinin. We have also studied the photooxygenation behaviour of allylic alcohols 6a-b (3-(4-alkoxynaphthyl)-but-2-ene-1-ols) and 6c (3-[4-(tert-butyl-dimethyl-silanyloxy)-naphthalen-1-yl]-but-2-en-1-ol). Being behaving as dienes, they furnished corresponding endoperoxides, while behaving as allylic alcohols, they yielded β-hydroxyhydroperoxides. All the endoperoxides (7a-c) and β-hydroxyhydroperoxides (8a-c) have been separately elaborated to the corresponding 1,2,4-trioxanes, except from endoperoxide 7c. It is worthy to note that TBDMS protected naphthoyl endoperoxide 7c unable to deliver 1,2,4-trioxane, which demonstrated the strength of the O-Si bond is not easy to cleave under acidic condition.
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Affiliation(s)
- Manvika Karnatak
- Department of Chemistry, Banasthali University, Banasthali Newai 304022, Rajasthan, India
| | - Mohammad Hassam
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10 Jankipuram Extension Sitapur Road, Lucknow 226031, India
| | | | - Siddharth Sharma
- Department of Chemistry, Mohanlal Sukhadia University, Udaipur 313001, India
| | - Dinesh Kumar Yadav
- Department of Chemistry, Mohanlal Sukhadia University, Udaipur 313001, India
| | - Chandan Singh
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10 Jankipuram Extension Sitapur Road, Lucknow 226031, India
| | - Sunil K Puri
- Parasitology Division, CSIR-Central Drug Research Institute, Sector 10 Jankipuram Extension Sitapur Road, Lucknow 226031, India
| | - Varun Rawat
- Amity School of Applied Sciences, Amity University Haryana, Gurugram 122413, India
| | - Ved Prakash Verma
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10 Jankipuram Extension Sitapur Road, Lucknow 226031, India; Department of Chemistry, Banasthali University, Banasthali Newai 304022, Rajasthan, India.
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Bordier C, Escande V, Darcel C. Past and current routes to β-hydroperoxy alcohols: A functional group with high potential in organic synthesis. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Synthesis of novel 1,2,4-trioxanes and antimalarial evaluation against multidrug-resistant Plasmodium yoelii nigeriensis. Bioorg Med Chem Lett 2021; 49:128305. [PMID: 34365007 DOI: 10.1016/j.bmcl.2021.128305] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/28/2021] [Accepted: 07/30/2021] [Indexed: 11/20/2022]
Abstract
Malaria epidemics represent one of the life-threatening diseases to low-income lying countries which subsequently affect the economic and social condition of mankind. In continuation in the development of a novel series of 1,2,4-trioxanes 13a1-c1, 13a2-c2, and 13a3-c3 have been prepared and further converted into their hemisuccinate derivatives 14a1-c1, 14a2-c2, and 14a3-c3 respectively. All these new compounds were evaluated for their antimalarial activity against multidrug-resistant Plasmodium yoelii nigeriensis in mice by both oral and intramuscular (im) routes. Hydroxy-functionalized trioxane 13a1 showed 80% protection and its hemisuccinate derivative 14a1 showed 100% protection at a dose of 48 mg/kg × 4 days by both routes, which is twice active than artemisinin by oral route.
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Zhang M, Han Y, Niu JL, Zhang ZH. A General and Practical Approach for the Synthesis of 1,2,4-Trioxanes Catalyzed by Silica-Ferric Chloride. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700671] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Mo Zhang
- National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science; Hebei Normal University; Shijiazhuang 050024 People's Republic of China
| | - Yi Han
- National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science; Hebei Normal University; Shijiazhuang 050024 People's Republic of China
| | - Jia-Liang Niu
- National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science; Hebei Normal University; Shijiazhuang 050024 People's Republic of China
| | - Zhan-Hui Zhang
- National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science; Hebei Normal University; Shijiazhuang 050024 People's Republic of China
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Lombardo M, Sonawane DP, Quintavalla A, Trombini C, Dhavale DD, Taramelli D, Corbett Y, Rondinelli F, Fattorusso C, Persico M, Taglialatela-Scafati O. Optimized Synthesis and Antimalarial Activity of 1,2-Dioxane-4-carboxamides. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301394] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Terent'ev AO, Borisov DA, Vil’ VA, Dembitsky VM. Synthesis of five- and six-membered cyclic organic peroxides: Key transformations into peroxide ring-retaining products. Beilstein J Org Chem 2014; 10:34-114. [PMID: 24454562 PMCID: PMC3896255 DOI: 10.3762/bjoc.10.6] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2013] [Accepted: 11/16/2013] [Indexed: 12/16/2022] Open
Abstract
The present review describes the current status of synthetic five and six-membered cyclic peroxides such as 1,2-dioxolanes, 1,2,4-trioxolanes (ozonides), 1,2-dioxanes, 1,2-dioxenes, 1,2,4-trioxanes, and 1,2,4,5-tetraoxanes. The literature from 2000 onwards is surveyed to provide an update on synthesis of cyclic peroxides. The indicated period of time is, on the whole, characterized by the development of new efficient and scale-up methods for the preparation of these cyclic compounds. It was shown that cyclic peroxides remain unchanged throughout the course of a wide range of fundamental organic reactions. Due to these properties, the molecular structures can be greatly modified to give peroxide ring-retaining products. The chemistry of cyclic peroxides has attracted considerable attention, because these compounds are used in medicine for the design of antimalarial, antihelminthic, and antitumor agents.
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Key Words
- 1,2,4,5-tetraoxanes
- 1,2,4-trioxanes
- 1,2,4-trioxolanes
- 1,2-dioxanes
- 1,2-dioxenes
- 1,2-dioxolanes
- cyclic peroxides
- ozonides
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Affiliation(s)
- Alexander O Terent'ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Dmitry A Borisov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Vera A Vil’
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Valery M Dembitsky
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
- Institute for Drug Research, P.O. Box 12065, Hebrew University, Jerusalem 91120, Israel
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Biamonte MA, Wanner J, Le Roch KG. Recent advances in malaria drug discovery. Bioorg Med Chem Lett 2013; 23:2829-43. [PMID: 23587422 PMCID: PMC3762334 DOI: 10.1016/j.bmcl.2013.03.067] [Citation(s) in RCA: 129] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 03/11/2013] [Accepted: 03/20/2013] [Indexed: 01/18/2023]
Abstract
This digest covers some of the most relevant progress in malaria drug discovery published between 2010 and 2012. There is an urgent need to develop new antimalarial drugs. Such drugs can target the blood stage of the disease to alleviate the symptoms, the liver stage to prevent relapses, and the transmission stage to protect other humans. The pipeline for the blood stage is becoming robust, but this should not be a source of complacency, as the current therapies set a high standard. Drug discovery efforts directed towards the liver and transmission stages are in their infancy but are receiving increasing attention as targeting these stages could be instrumental in eradicating malaria.
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Affiliation(s)
- Marco A Biamonte
- Drug Discovery for Tropical Diseases, Suite 230, San Diego, CA 92121, USA.
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