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Ricardo Dos Santos Correia P, Duarte de Freitas J, André Zeoly L, Silva Porto R, José da Paz Lima D. Discovery and structure-activity relationship of Morita-Baylis-Hillman adducts as larvicides against dengue mosquito vector, Aedes aegypti (Diptera: Culicidae). Bioorg Med Chem 2023; 90:117315. [PMID: 37253304 DOI: 10.1016/j.bmc.2023.117315] [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: 02/14/2023] [Revised: 04/24/2023] [Accepted: 05/02/2023] [Indexed: 06/01/2023]
Abstract
Neglected tropical diseases (NTDs) have become a significant public health problem worldwide, notably the life-threatening dengue hemorrhagic fever borne by the Aedes aegypti mosquito. Thus, mosquito vector control measures remain essential in public health vector surveillance and control to combat Aedes-borne infections. Therefore, a series of MBH adducts were synthesized and assessed towards the fourth instar mosquito larvae, Aedes aegypti, along with the preliminary structure-activity relationship (SAR). Noteworthy, this compound class might be synthetized by an efficient eco-friendly synthesismethod and a rapid route for the synthesis of commercial larvicide through a single synthetic step. The bioassays showed that this compound class is a promising larvicide to control Aedes aegypti mosquito larvae, mainly 3g, with an LC50 of 41.35 µg/mL, which was higher than evaluated positive controls. Nevertheless, it is a viable larvicidalhit candidate for further hit-to-leadproperties optimization of its biphenyl backbone scaffold with enhanced insecticidalbioactivity. Moreover, scanning electron microscopy analysis suggested a disruption of the osmoregulatory/ionoregulatory functions by the complete deterioration of the terminal exoskeleton hindgut and anal papillae. Therefore, this new study shows the larvicidal efficacy of the tested compounds against the Aedes aegypti larvae.
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Affiliation(s)
- Paulo Ricardo Dos Santos Correia
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Avenida Lourival Melo Mota, Maceió, Alagoas 57072-970, Brazil
| | | | - Lucas André Zeoly
- Department of Organic Chemistry, Institute of Chemistry, University of Campinas, PO Box 6154, 13083-970 Campinas, São Paulo, Brazil
| | - Ricardo Silva Porto
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Avenida Lourival Melo Mota, Maceió, Alagoas 57072-970, Brazil
| | - Dimas José da Paz Lima
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Avenida Lourival Melo Mota, Maceió, Alagoas 57072-970, Brazil.
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Kumari R, Jha AK, Goyal S, Maan R, Reddy SR, Easwar S. Acyl Transfer-Driven Rauhut-Currier Dimerization of Morita-Baylis-Hillman Ketones. J Org Chem 2023; 88:2023-2033. [PMID: 36753536 DOI: 10.1021/acs.joc.2c02244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
A serendipitous Rauhut-Currier dimerization of 1,1-disubstituted activated olefins derived from Morita-Baylis-Hillman adducts was observed in the presence of DABCO. The reaction is driven by the migration of an acyl group and produces multifunctionalized enol esters in yields greater than 90% in most cases, without necessitating column chromatographic purification. The acyl transfer is thought to proceed via a transition state typical of a Morita-Baylis-Hillman (MBH) reaction, supported by a brief mechanistic study involving computational calculations.
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Affiliation(s)
- Rajkiran Kumari
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer 305817, Rajasthan, India
| | - Ajit Kumar Jha
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer 305817, Rajasthan, India
| | - Sophiya Goyal
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer 305817, Rajasthan, India
| | - Reena Maan
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer 305817, Rajasthan, India
| | - S Rajagopala Reddy
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer 305817, Rajasthan, India
| | - Srinivasan Easwar
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer 305817, Rajasthan, India
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de-Andrade SD, Andrade IMG, Castro A, Montenegro YMR, das-Neves-Moreira D, Maia RA, Martins FT, Vaz BG, Franco-dos-Santos G, Lima EDO, Oliveira NDR, Farias BKDS, Lima-Junior CG. Deep eutectic solvent co-catalyzed synthesis and antimicrobial activity of Morita-Baylis-Hillman adducts from isatin derivatives. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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An Improved Protocol for the Morita‐Baylis‐Hillman Reaction Allows Unprecedented Broad Synthetic Scope. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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De Carvalho GSG, Granato ÁS, De Castro PP, Amarante GW. Recent Contributions of Nuclear Magnetic Resonance in Organocatalysis Mechanism Elucidation. CURRENT ORGANOCATALYSIS 2019. [DOI: 10.2174/2213337206666190328210907] [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
Background:
Nuclear Magnetic Resonance (NMR) is one of the most employed techniques
in structural elucidation of organic compounds. In addition to its use in structural characterization,
it has been widely employed in the investigation of reaction mechanisms, especially those involving
catalysis.
Objective:
In this review, we aim to provide recent examples of the interface of NMR and organocatalysis
reaction mechanism.
Methods:
Selected examples of different approaches for mechanism elucidation will be presented,
such as isotopic effect, catalyst labelling and online reaction monitoring. A discussion involving the
use of solid-state NMR will also be disclosed.
Conclusion:
NMR consists of a non-destructive technique, extremely useful in the real-time identification
of intermediates in crude reaction mixtures. With the advent of two-dimensional experiments
and high field NMR spectrometers, the reports of studies involving mechanistic elucidation were
greatly enhanced. In this context, nowadays NMR appears as a powerful tool for the comprehension
of reaction mechanisms, including the possibility of the proposal of unknown reaction mechanisms
within organocatalysis.
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Affiliation(s)
| | - Álisson Silva Granato
- Department of Chemistry, Federal University of Juiz de Fora, Campus Martelos, Juiz de Fora, Minas Gerais 36036900, Brazil
| | - Pedro Pôssa De Castro
- Department of Chemistry, Federal University of Juiz de Fora, Campus Martelos, Juiz de Fora, Minas Gerais 36036900, Brazil
| | - Giovanni Wilson Amarante
- Department of Chemistry, Federal University of Juiz de Fora, Campus Martelos, Juiz de Fora, Minas Gerais 36036900, Brazil
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Lee J, Singh D, Ha HJ. Morita-Baylis-Hillman reaction of a chiral aziridine aldehyde. Org Biomol Chem 2018; 16:8048-8055. [PMID: 30183792 DOI: 10.1039/c8ob01630e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Morita-Baylis-Hillman reaction of (R)-1-((R)-1-phenylethyl)aziridine-2-carbaldehyde with alkyl acrylate was carried out under various conditions by changing solvents, bases, and alcohol additives. The reaction at room temperature under neat conditions (no solvent) with quinuclidine as an amine nucleophile, in the presence of benzyl alcohol as an additive, afforded a product, γ-(aziridin-2-yl)-β-hydroxy-α-methylene butanoate, in 97% yield with a diastereomeric ratio of anti and syn as 86 : 14.
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Affiliation(s)
- Jaedeok Lee
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin, 17035 Korea.
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