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Effects and Mechanisms of Action of Preussin, a Marine Fungal Metabolite, against the Triple-Negative Breast Cancer Cell Line, MDA-MB-231, in 2D and 3D Cultures. Mar Drugs 2023; 21:md21030166. [PMID: 36976215 PMCID: PMC10053333 DOI: 10.3390/md21030166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 03/01/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
Triple-negative breast cancer (TNBC) represents an aggressive subtype of breast cancer (BC) with a typically poorer prognosis than other subtypes of BC and limited therapeutic options. Therefore, new drugs would be particularly welcome to help treat TNBC. Preussin, isolated from the marine sponge-associated fungus, Aspergillus candidus, has shown the potential to reduce cell viability and proliferation as well as to induce cell death and cell cycle arrest in 2D cell culture models. However, studies that better mimic the tumors in vivo, such as 3D cell cultures, are needed. Here, we studied the effects of preussin in the MDA-MB-231 cell line, comparing 2D and 3D cell cultures, using ultrastructural analysis and the MTT, BrdU, annexin V-PI, comet (alkaline and FPG modified versions), and wound healing assays. Preussin was found to decrease cell viability, both in 2D and 3D cell cultures, in a dose-dependent manner, impair cell proliferation, and induce cell death, therefore excluding the hypothesis of genotoxic properties. The cellular impacts were reflected by ultrastructural alterations in both cell culture models. Preussin also significantly inhibited the migration of MDA-MB-231 cells. The new data expanded the knowledge on preussin actions while supporting other studies, highlighting its potential as a molecule or scaffold for the development of new anticancer drugs against TNBC.
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Meninno S, Lattanzi A. Epoxides: Small Rings to Play with under Asymmetric Organocatalysis. ACS ORGANIC & INORGANIC AU 2022; 2:289-305. [PMID: 35942279 PMCID: PMC9354533 DOI: 10.1021/acsorginorgau.2c00009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
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Optically pure epoxides
are recognized as highly valuable products
and key intermediates, useful in different areas from pharmaceutical
and agrochemical industries to natural product synthesis and materials
science. The predictable fate of the ring-opening process, in terms
of stereoselectivity and often of regioselectivity, enables useful
functional groups to be installed at vicinal carbon atoms in a desired
manner. In this way, products of widespread utility either for synthetic
applications or as final products can be obtained. The advent of asymmetric
organocatalysis provided a new convenient tool, not only for their
preparation but also for the elaboration of this class of heterocycles.
In this review, we focus on recent developments of stereoselective
organocatalytic ring-opening reactions of meso-epoxides,
kinetic resolution of racemic epoxides, and Meinwald-type rearrangement.
Examples of asymmetric organocatalytic processes toward specific synthetic
targets, which include ring opening of an epoxide intermediate, are
also illustrated.
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Affiliation(s)
- Sara Meninno
- Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Italy
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Srivastava N, Ha H. Highly Efficient and Stereoselective Mukaiyama Aldol Reaction with Chiral Aziridine‐2‐carboxaldehyde and Its Synthetic Applications. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nikhil Srivastava
- Department of Chemistry Hankuk University of Foreign Studies 17035 Yongin (Republic of Korea
| | - Hyun‐Joon Ha
- Department of Chemistry Hankuk University of Foreign Studies 17035 Yongin (Republic of Korea
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Rhee H, Ranjith J, Byeon H, Ha H, Yang JW. Preparation and Utilization of Contiguous Bisaziridines as Chiral Building Blocks. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hyong‐Jin Rhee
- Department of Chemistry Hankuk University of Foreign Studies Yongin 17035 Republic of Korea
| | - Jala Ranjith
- Department of Chemistry Hankuk University of Foreign Studies Yongin 17035 Republic of Korea
| | - Huimyoung Byeon
- Department of Energy Science Sungkyunkwan University Suwon 16419 Republic of Korea
| | - Hyun‐Joon Ha
- Department of Chemistry Hankuk University of Foreign Studies Yongin 17035 Republic of Korea
| | - Jung Woon Yang
- Department of Energy Science Sungkyunkwan University Suwon 16419 Republic of Korea
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Głowacka IE, Trocha A, Wróblewski AE, Piotrowska DG. N-(1-Phenylethyl)aziridine-2-carboxylate esters in the synthesis of biologically relevant compounds. Beilstein J Org Chem 2019; 15:1722-1757. [PMID: 31435446 PMCID: PMC6664392 DOI: 10.3762/bjoc.15.168] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 07/05/2019] [Indexed: 12/13/2022] Open
Abstract
Since Garner’s aldehyde has several drawbacks, first of all is prone to racemization, alternative three-carbon chirons would be of great value in enantioselective syntheses of natural compounds and/or drugs. This review article summarizes applications of N-(1-phenylethyl)aziridine-2-carboxylates, -carbaldehydes and -methanols in syntheses of approved drugs and potential medications as well as of natural products mostly alkaloids but also sphingoids and ceramides and their 1- and 3-deoxy analogues and several hydroxy amino acids and their precursors. Designed strategies provided new procedures to several drugs and alternative approaches to natural products and proved efficiency of a 2-substituted N-(1-phenylethyl)aziridine framework as chiron bearing a chiral auxiliary.
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Affiliation(s)
- Iwona E Głowacka
- Bioorganic Chemistry Laboratory, Faculty of Pharmacy, Medical University of Lodz, Muszynskiego 1, 90-151 Lodz, Poland
| | - Aleksandra Trocha
- Bioorganic Chemistry Laboratory, Faculty of Pharmacy, Medical University of Lodz, Muszynskiego 1, 90-151 Lodz, Poland
| | - Andrzej E Wróblewski
- Bioorganic Chemistry Laboratory, Faculty of Pharmacy, Medical University of Lodz, Muszynskiego 1, 90-151 Lodz, Poland
| | - Dorota G Piotrowska
- Bioorganic Chemistry Laboratory, Faculty of Pharmacy, Medical University of Lodz, Muszynskiego 1, 90-151 Lodz, Poland
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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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Hausherr A, Siemeister G, Reissig HU. Alkoxyallene-based syntheses of preussin and its analogs and their cytotoxicity. Org Biomol Chem 2018; 17:122-134. [PMID: 30520931 DOI: 10.1039/c8ob02645a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Short syntheses of oxa-preussin, racemic preussin and (-)-preussin are reported. Starting from a racemic 3-nonyl-substituted methoxyallene derivative, its lithiation and addition to phenylethanal provided the corresponding allenyl alcohol that was converted into two diastereomeric dihydrofuran derivatives by silver nitrate-catalyzed 5-endo-trig cyclization. The acid hydrolysis of the enol ether moiety gave heterocyclic ketones and subsequent highly stereoselective reductions with l-selectride furnished 2-benzyl-5-nonylfuran-3-ol derivatives in good overall yield. The major all-cis-diastereomer has the skeleton and relative configuration of preussin and is hence called oxa-preussin. An analogous sequence with the same allene, but an N-sulfonyl imine as the electrophile, finally led to racemic preussin. The stereoselectivities of the individual steps are discussed in detail. With an enantiopure 2-benzyl-5-nonylpyrrolidin-3-one intermediate the preparation of (-)-preussin with an enantiomeric ratio of >95 : 5 could be accomplished in a few steps. The sign of the optical rotation of this product finally proved the absolute configurations of its precursors and demonstrated that our chiral auxiliary-based route led to the antipode of the natural product. The cytotoxicity of several of the prepared heterocycles against MCF-7 tumor cells was investigated and five compounds, including racemic and enantiopure (-)-preussin, were identified as highly cytotoxic with IC50 values in the range of 3-6 μM.
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Affiliation(s)
- Arndt Hausherr
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany.
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Cherni E, Essalah K, Besbes N, Abderrabba M, Ayadi S. Theoretical investigation of the regioselective ring opening of 2-methylaziridine. Lewis acid effect. J Mol Model 2018; 24:309. [PMID: 30302573 DOI: 10.1007/s00894-018-3833-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 09/14/2018] [Indexed: 02/07/2023]
Abstract
The formation of substituted 1,2-diamines via the regiospecific nucleophilic ring opening of 2-methylaziridine with methylamine was performed by nucleophilic attack at aziridine carbon atoms. A detailed theoretical study was investigated by density functional theory (DFT) at the B3LYP level and second order Moller Plesset perturbation theory (MP2) by using the 6-311G(d,p) basis set. The third Grimme correction term (D3) was used to take into account weak interactions. Solvent effects were computed in methanol and dimethylsulfoxide using the polarizable continuum model (PCM). Emphasis was placed on the ring opening mechanisms of neutral aziridines and aziridinium ions obtained through N-complexation with the BF3 Lewis acid. Moreover, the effect of substituent groups on the regioselectivity of the ring opening was investigated. The nucleophilic attack was carried out via two pathways (frontside attack M1 and backside attack M2) where activation barriers proved the preference for ring opening through the backside attack at the C3 aziridine carbon atom. The obtained results showed that the frontside attack with methylamine takes place along a concerted mechanism that leads to formation of products through one transition state. However, the backside attack is carried via a stepwise process in which the methylamine attack takes place in an SN2 fashion where the leaving group is the ring nitrogen. It first conduces a ring opening considered as the rate-determining step followed by formation of a zwitterionic intermediate. This latter undergoes a rotation to allow the proton transfer step and finally leads to formation of the thermodynamic products.
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Affiliation(s)
- Emna Cherni
- Université de Tunis El Manar, Faculté des Sciences de Tunis, Campus Universitaire Farhat Hached d'El Manar - B.P. 94 Cité Rommana, 1068, Tunis, Tunisie. .,Université de Carthage, LR11ES22, Laboratoire Matériaux Molécules et Applications (LMMA), IPEST, BP51, La Marsa, 2070, Tunisie.
| | - Khaled Essalah
- Université de Tunis El Manar, Unité de Recherche en Sciences Fondamentales et Didactiques- Equipe de chimie théorique et réactivité, (UR14ES10) IPEI El Manar, Tunis, Tunisie
| | - Néji Besbes
- Laboratoire Matériaux Composites et Minéraux Argileux - Groupe de Chimie Organique Verte et Appliquée (LMCMA), Centre National de Recherches en Sciences des Matériaux, Technopole Borj Cédria, Soliman, 8027, Tunisie
| | - Manef Abderrabba
- Université de Carthage, LR11ES22, Laboratoire Matériaux Molécules et Applications (LMMA), IPEST, BP51, La Marsa, 2070, Tunisie
| | - Sameh Ayadi
- Université de Carthage, LR11ES22, Laboratoire Matériaux Molécules et Applications (LMMA), IPEST, BP51, La Marsa, 2070, Tunisie.,Institut National des Sciences et Technologies de la Mer (INSTM), Laboratoire Milieu Marin, Centre la Goulette, La Goulette, Tunisie
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