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Synthesis and analgesic activity of aliphatic ketones-derived chiral hexahydro-2H-chromenes

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Abstract

New hexahydro-2H-chromenes were synthesized by reactions of monoterpenoid (1R,2R,6S)-3-methyl-6-(prop-1-en-2-yl)cyclohex-3-ene-1,2-diol with aliphatic ketones in the presence of montmorillonite clay H+-K10. The compounds formed and isolated as a pair of diastereoisomers were evaluated for their analgesic activity in vivo. It was found that the analgesic activity of (4aR,8R,8aR)-4,7-dimethyl-3,4,4a,5,8,8a-hexahydrospiro[chromene-2,1ʹ-cyclohexane]-4,8-diol 8b significantly exceeds (two orders of magnitude higher) the activity of diclofenac sodium in the acetic acid-induced writhing test. It has low acute toxicity and is very promising for further development.

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Acknowledgements

Authors would like to acknowledge the Multi-Access Chemical Research Center SB RAS for spectral and analytical measurements.

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Correspondence to Konstantin Volcho.

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Il’ina, I., Morozova, E., Pavlova, A. et al. Synthesis and analgesic activity of aliphatic ketones-derived chiral hexahydro-2H-chromenes. Med Chem Res 29, 738–747 (2020). https://doi.org/10.1007/s00044-020-02518-3

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  • DOI: https://doi.org/10.1007/s00044-020-02518-3

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