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Cloete SJ, N'Da CI, Legoabe LJ, Petzer A, Petzer JP. The evaluation of 1-tetralone and 4-chromanone derivatives as inhibitors of monoamine oxidase. Mol Divers 2021; 25:491-507. [PMID: 32970293 DOI: 10.1007/s11030-020-10143-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 09/11/2020] [Indexed: 12/28/2022]
Abstract
Abstract Monoamine oxidase (MAO) is of much clinical relevance, and inhibitors of this enzyme are used in the treatment for neuropsychiatric and neurodegenerative disorders such as depression and Parkinson’s disease. The present study synthesises and evaluates the MAO inhibition properties of a series of 33 1-tetralone and 4-chromanone derivatives in an attempt to discover high-potency compounds and to expand on the structure–activity relationships of MAO inhibition by these classes. Among these series, eight submicromolar MAO-A inhibitors and 28 submicromolar MAO-B inhibitors are reported, with all compounds acting as specific inhibitors of the MAO-B isoform. The most potent inhibitor was a 1-tetralone derivative (1h) with IC50 values of 0.036 and 0.0011 µM for MAO-A and MAO-B, respectively. Interestingly, with the reduction of 1-tetralones to the corresponding alcohols, a decrease in MAO inhibition potency is observed. Among these 1-tetralol derivatives, 1p (IC50 = 0.785 μM) and 1o (IC50 = 0.0075 μM) were identified as particularly potent inhibitors of MAO-A and MAO-B, respectively. Potent compounds such as those reported here may act as leads for the future development of MAO-B specific inhibitors. Graphic abstract The present study describes the MAO inhibitory activities of a series of 1-tetralone and 4-chromanone derivatives. Numerous high-potency MAO-B specific inhibitors were identified.![]() Electronic supplementary material The online version of this article (10.1007/s11030-020-10143-w) contains supplementary material, which is available to authorised users.
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Dongamanti A, Aamate VK, Devulapally MG, Gundu S, Balabadra S, Manga V, Yogeeswari P, Sriram D, Balasubramanian S. Bis-spirochromanones as potent inhibitors of Mycobacterium tuberculosis: synthesis and biological evaluation. Mol Divers 2017; 21:999-1010. [PMID: 28840414 DOI: 10.1007/s11030-017-9779-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 08/02/2017] [Indexed: 11/30/2022]
Abstract
On the basis of reported antimycobacterial property of chroman-4-one pharmacophore, a series of chemically modified bis-spirochromanones were synthesized starting from 2-hydroxyacetophenone and 1,4-dioxaspiro[4.5] decan-8-one using a Kabbe condensation approach. The synthesized bis-spirochromanones were established based on their spectral data and X-ray crystal structure of 6e. All synthesized compounds were evaluated against Mycobacterium tuberculosis H37Rv (ATCC 27294) strain, finding that some products exhibited good antimycobacterial activity with minimum inhibitory concentration as low as [Formula: see text]. Docking studies were carried out to identify the binding interactions of compounds II, 6a and 6n with FtsZ. Compounds exhibiting good in vitro potency in the MTB MIC assay were further evaluated for toxicity using the HEK cell line.
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Affiliation(s)
- Ashok Dongamanti
- Green and Medicinal Chemistry Lab, Department of Chemistry, Osmania University, Hyderabad, Telangana State, 500 007, India.
| | - Vikas Kumar Aamate
- Green and Medicinal Chemistry Lab, Department of Chemistry, Osmania University, Hyderabad, Telangana State, 500 007, India
| | - Mohan Gandhi Devulapally
- Green and Medicinal Chemistry Lab, Department of Chemistry, Osmania University, Hyderabad, Telangana State, 500 007, India
| | - Srinivas Gundu
- Green and Medicinal Chemistry Lab, Department of Chemistry, Osmania University, Hyderabad, Telangana State, 500 007, India
| | - Saikrishna Balabadra
- Molecular Modeling and Medicinal Chemistry group, Department of Chemistry, Osmania University, Hyderabad, Telangana State, 500 007, India
| | - Vijjulatha Manga
- Molecular Modeling and Medicinal Chemistry group, Department of Chemistry, Osmania University, Hyderabad, Telangana State, 500 007, India
| | - Perumal Yogeeswari
- Department of Pharmacy, Birla Institute of Technology and Science - Pilani, Hyderabad Campus, Jawahar Nagar, Hyderabad, Telangana State, 500 078, India
| | - Dharmarajan Sriram
- Department of Pharmacy, Birla Institute of Technology and Science - Pilani, Hyderabad Campus, Jawahar Nagar, Hyderabad, Telangana State, 500 078, India
| | - Sridhar Balasubramanian
- X-ray Crystallography Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana State, 500 007, India
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Letafat B, Shakeri R, Emami S, Noushini S, Mohammadhosseini N, Shirkavand N, Kabudanian Ardestani S, Safavi M, Samadizadeh M, Letafat A, Sha Ee A, Foroumadi A. Synthesis and in vitro cytotoxic activity of novel chalcone-like agents. Iran J Basic Med Sci 2013; 16:1155-62. [PMID: 24494068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Accepted: 01/10/2013] [Indexed: 11/23/2022]
Abstract
OBJECTIVE(S) Chalcones and their rigid analogues represent an important class of small molecules having anticancer activities. Therefore, in this study the synthesis and cytotoxic activity of new 3-benzylidenchroman-4-ones were described as rigid chalcone analogues. MATERIALS AND METHODS The reaction of resorcinol with 3-chloropropionic acid in the presence of CF3SO3H was afforded corresponding propiophenone. It was cyclized using 2M NaOH to give 7-hydroxy-4-chromanone. O-Alkylation of 7-hydroxy-4-chromanone with alkyl iodide in the presence of K2CO3 gave 7-alkoxychroman-4-one. Finally, condensation of chroman-4-one derivatives with different aldehydes afforded target compounds in good yields. The newly synthesized compounds were tested in vitro against different human cancer cell lines including K562 (human erythroleukemia), MDA-MB-231 (human breast cancer), and SK-N-MC (human neuroblastoma) cells. The cell viability was evaluated using MTT colorimetric assay. RESULTS Most of the compounds showed good inhibitory activity against cancer cells. Among them, compound 4a containing 7-hydroxy group on chromanone ring and 3-bromo-4-hydroxy-5-methoxy substitution pattern on benzylidene moiety was the most potent compound with IC50 values ≤ 3.86 µg/ml. It was 6-17 times more potent than etoposide against tested cell lines. CONCLUSION We described synthesis and cytotoxic activity of poly-functionalized 3-benzylidenechroman-4-ones as new chalcone-like agents. These compounds can be considered as conformationally constrained congeners of chalcones to tolerate the poly-functionalization on the core structures for further optimization.
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