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Kazakova O, Rubanik L, Lobov A, Poleshchuk N, Baikova I, Kapustina Y, Petrova A, Korzun T, Lopatina T, Fedorova A, Rybalova T, Polovianenko D, Mioc M, Șoica C. Synthesis of erythrodiol C-ring derivatives and their activity against Chlamydia trachomatis. Steroids 2021; 175:108912. [PMID: 34480919 DOI: 10.1016/j.steroids.2021.108912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/04/2021] [Accepted: 08/25/2021] [Indexed: 11/18/2022]
Abstract
To develop new potential agents against Chlamydia trachomatis among oleanane type triterpenoids the synthesis, spectral and X-ray analysis as well as antimicrobial screening of C-12 oxygen and nitrogen derivatives of erythrodiol is presented. The reduction of methyl 3β-acetoxy-12-oxo-oleanoate with LiAlH4 led to isomeric erythrodiol 12β- and 12α-hydroxy-derivatives, their stereochemistry with respect to the position of hydroxyl-group at C-12 was determined based on the multiplets splitting patterns, the magnitude of the spin-spin interaction, and NOESY interactions. Methyl 3β-acetoxy-12-oxo-oleanoate was transformed to 12E-hydroxyimino- and 12E-methoxyimino-derivatives by the interaction with NH2OH∙HCl or CH3ONH2∙HCl, respectively. By Beckmann rearrangement with SOCl2 in dioxane 12E-oxime was converted to C-lactame and its following reduction with LiAlH4 in THF or dioxane led to erythrodiol C-azepanone or C-azepane derivatives. The structure 3-O,12-N-bis-acetyl-derivative of C-azepane-erythrodiol was confirmed by the single crystal X-ray analysis. Erythrodiol 12β-hydroxy- and C-azepane derivatives were found to be lead compounds with significant activity against C. trachomatis with MIC 1.56 and 3.125 μg/mL. Molecular docking was employed to suggest potential binding interaction, the tested compounds are likely to act as Cdu1 protein inhibitors while 12β-hydroxy-erythrodiol exhibited the highest affinity towards this respective target protein. These results indicated that C-ring oxygen and nitrogen erythrodiol derivatives might be considered for further research in the design of antibacterial agents against Chlamydia trachomatis.
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Affiliation(s)
- Oxana Kazakova
- Ufa Institute of Chemistry of the Ufa Federal Research Centre of the Russian Academy of Sciences, Ufa 450054, Russian Federation.
| | - Liudmila Rubanik
- Republican Research and Practical Center for Epidemiology and Microbiology, Minsk 220114, Belarus
| | - Alexander Lobov
- Ufa Institute of Chemistry of the Ufa Federal Research Centre of the Russian Academy of Sciences, Ufa 450054, Russian Federation
| | - Nikolai Poleshchuk
- Republican Research and Practical Center for Epidemiology and Microbiology, Minsk 220114, Belarus
| | - Irina Baikova
- Ufa Institute of Chemistry of the Ufa Federal Research Centre of the Russian Academy of Sciences, Ufa 450054, Russian Federation
| | - Yuliya Kapustina
- Republican Research and Practical Center for Epidemiology and Microbiology, Minsk 220114, Belarus
| | - Anastasiya Petrova
- Ufa Institute of Chemistry of the Ufa Federal Research Centre of the Russian Academy of Sciences, Ufa 450054, Russian Federation
| | - Tatyana Korzun
- Republican Research and Practical Center for Epidemiology and Microbiology, Minsk 220114, Belarus
| | - Tatyana Lopatina
- Ufa Institute of Chemistry of the Ufa Federal Research Centre of the Russian Academy of Sciences, Ufa 450054, Russian Federation
| | - Alexandra Fedorova
- Ufa Institute of Chemistry of the Ufa Federal Research Centre of the Russian Academy of Sciences, Ufa 450054, Russian Federation
| | - Tatyana Rybalova
- N.N. Vorozhtzov Novosibirsk Institute of Organic Chemistry SB RAS, Novosibirsk 630090, Russian Federation
| | - Dmitri Polovianenko
- N.N. Vorozhtzov Novosibirsk Institute of Organic Chemistry SB RAS, Novosibirsk 630090, Russian Federation
| | - Marius Mioc
- Faculty of Pharmacy, "Victor Babes" University of Medicine and Pharmacy, 2nd Eftimie Murgu Square, Timisoara 300041, Romania
| | - Codruța Șoica
- Faculty of Pharmacy, "Victor Babes" University of Medicine and Pharmacy, 2nd Eftimie Murgu Square, Timisoara 300041, Romania
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