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Roy MS, Meng X, Koda K, Shrestha A, Putman JI, Gout D, Armstrong DW, Lovely CJ. Total synthesis of haploscleridamine, villagorgin A and an approach towards lissoclin C. Org Biomol Chem 2023; 21:1422-1434. [PMID: 36723147 DOI: 10.1039/d2ob01908f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
An investigation of asymmetric total syntheses of three indole-imidazole alkaloids from histidine are described. A common advanced piperidinone was contructed via a ring-closing metathesis which was then subjected to a modified Fischer indole synthesis. Deprotection of an N-tosyl group via a dissolving metal reduction affords haploscleridamine which upon reaction with aqueous formaldehyde in trifluoroethanol provided villagorgin A. On closer examination, it was found that villagorgin A was produced as a byproduct during the reductive detosylation in the presence of magnesium and methanol. Attempts to obtain the brominated haploscleridamine congener, lissoclin C through use of bromophenyl hydrazone were thwarted by reductive debromination during deprotection efforts. Investigation of the enantiopurity of the synthetic natural products revealed production of almost racemic materials in some batches as the result of partial racemization of an early stage intermediate. A revised approach routinely provided scalemic haploscleridamine and villagorgin in 30% ee. Analysis of the enantiomer composition of all intermediates by HPLC using columns with chiral stationary phases; this analysis revealed several steps where erosion of enantiomer composition occurred.
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Affiliation(s)
- Moumita Singha Roy
- Department of Chemistry and Biochemistry, University of Texas Arlington, Arlington, TX76019-0065, USA.
| | - Xiaofeng Meng
- Department of Chemistry and Biochemistry, University of Texas Arlington, Arlington, TX76019-0065, USA.
| | - Karuna Koda
- Department of Chemistry and Biochemistry, University of Texas Arlington, Arlington, TX76019-0065, USA.
| | - Andrina Shrestha
- Department of Chemistry and Biochemistry, University of Texas Arlington, Arlington, TX76019-0065, USA.
| | - Joshua I Putman
- Department of Chemistry and Biochemistry, University of Texas Arlington, Arlington, TX76019-0065, USA.
| | - Delphine Gout
- Department of Chemistry and Biochemistry, University of Texas Arlington, Arlington, TX76019-0065, USA.
| | - Daniel W Armstrong
- Department of Chemistry and Biochemistry, University of Texas Arlington, Arlington, TX76019-0065, USA.
| | - Carl J Lovely
- Department of Chemistry and Biochemistry, University of Texas Arlington, Arlington, TX76019-0065, USA.
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Chedupaka R, Pawar R, Venkatesham P, Vedula RR. Synthesis, characterization and Density Functional Theory of novel one-pot thioalkylated benzimidazole-linked 4-substituted mercaptoimidazole molecular hybrids via multi-component approach. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2072745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Raju Chedupaka
- Department of chemistry, National Institute of Technology Warangal, Warangal, India
| | - Ravinder Pawar
- Department of chemistry, National Institute of Technology Warangal, Warangal, India
| | | | - Rajeswar Rao Vedula
- Department of chemistry, National Institute of Technology Warangal, Warangal, India
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Exploitation the unique acidity of novel cerium-tungstate catalysts in the preparation of indole derivatives under eco-friendly acid catalyzed Fischer indole reaction protocol. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2021.103670] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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Ali R, Ahmed W, Jayant V, alvi S, Ahmed N, Ahmed A. Metathesis reactions in total‐ and natural product fragments syntheses. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100753] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Rashid Ali
- Jamia Millia Islamia New Delhi India 110025 Department of Chemistry Jamia Nagar,New Delhi india110025 110025 New Delhi INDIA
| | - Waqar Ahmed
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
| | - Vikrant Jayant
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
| | - shakeel alvi
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
| | - Nadeem Ahmed
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
| | - Azeem Ahmed
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
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Ring-closing metathesis in the synthesis of fused indole structures. ADVANCES IN HETEROCYCLIC CHEMISTRY 2022. [DOI: 10.1016/bs.aihch.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Heravi MM, Amiri Z, Kafshdarzadeh K, Zadsirjan V. Synthesis of indole derivatives as prevalent moieties present in selected alkaloids. RSC Adv 2021; 11:33540-33612. [PMID: 35497516 PMCID: PMC9042329 DOI: 10.1039/d1ra05972f] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 09/10/2021] [Indexed: 02/02/2023] Open
Abstract
Indoles are a significant heterocyclic system in natural products and drugs. They are important types of molecules and natural products and play a main role in cell biology. The application of indole derivatives as biologically active compounds for the treatment of cancer cells, microbes, and different types of disorders in the human body has attracted increasing attention in recent years. Indoles, both natural and synthetic, show various biologically vital properties. Owing to the importance of this significant ring system, the investigation of novel methods of synthesis have attracted the attention of the chemical community. In this review, we aim to highlight the construction of indoles as a moiety in selected alkaloids.
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Affiliation(s)
- Majid M Heravi
- Department of Chemistry, School of Physics and Chemistry, Alzahra University Vanak Tehran Iran +98 2188041344 +98 9121329147
| | - Zahra Amiri
- Department of Chemistry, School of Physics and Chemistry, Alzahra University Vanak Tehran Iran +98 2188041344 +98 9121329147
| | - Kosar Kafshdarzadeh
- Department of Chemistry, School of Physics and Chemistry, Alzahra University Vanak Tehran Iran +98 2188041344 +98 9121329147
| | - Vahideh Zadsirjan
- Department of Chemistry, School of Physics and Chemistry, Alzahra University Vanak Tehran Iran +98 2188041344 +98 9121329147
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Affiliation(s)
- Sudheesh Ananthu
- School of Chemical Sciences Mahatma Gandhi University Priyadarsini Hills P.O Kottayam Kerala 686560 India
| | - Thaipparambil Aneeja
- School of Chemical Sciences Mahatma Gandhi University Priyadarsini Hills P.O Kottayam Kerala 686560 India
| | - Gopinathan Anilkumar
- School of Chemical Sciences Mahatma Gandhi University Priyadarsini Hills P.O Kottayam Kerala 686560 India
- Advanced Molecular Materials Research centre (AMMRC) Mahatma Gandhi University Priyadarsini Hills P.O Kottayam Kerala 686560 India
- Institute for Integrated Programmes and Research in Basic Sciences (IIRBS) Mahatma Gandhi University Priyadarsini Hills P.O Kottayam Kerala 686560 India
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Szabó T, Volk B, Milen M. Recent Advances in the Synthesis of β-Carboline Alkaloids. Molecules 2021; 26:663. [PMID: 33513936 PMCID: PMC7866041 DOI: 10.3390/molecules26030663] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 01/16/2021] [Accepted: 01/21/2021] [Indexed: 12/31/2022] Open
Abstract
β-Carboline alkaloids are a remarkable family of natural and synthetic indole-containing heterocyclic compounds and they are widely distributed in nature. Recently, these alkaloids have been in the focus of interest, thanks to their diverse biological activities. Their pharmacological activity makes them desirable as sedative, anxiolytic, hypnotic, anticonvulsant, antitumor, antiviral, antiparasitic or antimicrobial drug candidates. The growing potential inherent in them encourages many researchers to address the challenges of the synthesis of natural products containing complex β-carboline frameworks. In this review, we describe the recent developments in the synthesis of β-carboline alkaloids and closely related derivatives through selected examples from the last 5 years. The focus is on the key steps with improved procedures and synthetic approaches. Furthermore the pharmacological potential of the alkaloids is also highlighted.
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Affiliation(s)
| | | | - Mátyás Milen
- Egis Pharmaceuticals Plc., Directorate of Drug Substance Development, P.O. Box 100, H-1475 Budapest, Hungary; (T.S.); (B.V.)
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Carroll AR, Copp BR, Davis RA, Keyzers RA, Prinsep MR. Marine natural products. Nat Prod Rep 2021; 38:362-413. [PMID: 33570537 DOI: 10.1039/d0np00089b] [Citation(s) in RCA: 198] [Impact Index Per Article: 66.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This review covers the literature published in 2019 for marine natural products (MNPs), with 719 citations (701 for the period January to December 2019) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1490 in 440 papers for 2019), together with the relevant biological activities, source organisms and country of origin. Pertinent reviews, biosynthetic studies, first syntheses, and syntheses that led to the revision of structures or stereochemistries, have been included. Methods used to study marine fungi and their chemical diversity have also been discussed.
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Affiliation(s)
- Anthony R Carroll
- School of Environment and Science, Griffith University, Gold Coast, Australia. and Griffith Institute for Drug Discovery, Griffith University, Brisbane, Australia
| | - Brent R Copp
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Rohan A Davis
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, Australia and School of Enivironment and Science, Griffith University, Brisbane, Australia
| | - Robert A Keyzers
- Centre for Biodiscovery, School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - Michèle R Prinsep
- Chemistry, School of Science, University of Waikato, Hamilton, New Zealand
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Abstract
The review highlights the recent advances (2018-present) in the regiocontrolled synthesis of substituted imidazoles. These heterocycles are key components to functional molecules that are used in a variety of everyday applications. An emphasis has been placed on the bonds constructed during the formation of the imidazole. The utility of these methodologies based around the functional group compatibility of the process and resultant substitution patterns around the ring are described, including discussion of scope and limitations, reaction mechanisms and future challenges.
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Affiliation(s)
- Dmitrii A Shabalin
- A.E. Favorsky Irkutsk Institute of Chemistry SB RAS, 1 Favorsky St, Irkutsk, 664033, Russian Federation
| | - Jason E Camp
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK.
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Srivastava A, Singh PK, Ali A, Singh PP, Srivastava V. Recent applications of Rose Bengal catalysis in N-heterocycles: a short review. RSC Adv 2020; 10:39495-39508. [PMID: 35515398 PMCID: PMC9057485 DOI: 10.1039/d0ra07400d] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 10/18/2020] [Indexed: 11/21/2022] Open
Abstract
The visible light harnessing ability of Rose Bengal, an organic dye, has been extensively employed in organic chemistry over the last few years. In visible light mediated reactions, this photoredox catalyst operates through multiple pathways and has the ability to provide distinctly different and valuable results. The most significant of these results are bond creation, bond functionalization, particularly for C–H and C–heteroatom bonds, and cross couplings. It is crucial to study these cases whenever these bond formations and couplings lead to the formation of heterocyclic compounds or their functionalization. The diverse biological activity and medicinal applications of heterocyclic compounds is an extensively explored area. This review primarily attempts to demonstrate the synthetic potential of Rose Bengal for synthesis and site selective functionalization of nitrogen containing heterocycles. The recent applications of Rose Bengal as a photocatalyst for the synthesis and functionalization of N-heterocycles have been discussed.![]()
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Affiliation(s)
| | | | - Akram Ali
- Department of Chemistry
- CMP Degree College
- Prayagraj
- India
| | - Praveen P. Singh
- Department of Chemistry
- United College of Engineering and Research
- Prayagraj
- India
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