Abstract
Background: Corticosteroids are an important group of polycyclic compounds having a wide range of pharmacological and physiological properties. Thiopyran derivatives are important building blocks of many biologically active compounds.
Objective: Keeping in mind the wide range of applications of corticosteroids and thiopyran, herein we intend to develop a simple and efficient strategy to synthesize steroidal thiopyran derivatives starting with different commercially available corticosteroids and study their biological properties.
Materials and Methods: To achieve our aim, we employed a one-pot multi-component synthesis of steroidal thiopyran derivatives by the reaction of corticosteroids, malononitrile, and carbon disulphide in the presence of triethylamine as a catalyst.
Results and Discussion: An array of novel thiopyran compounds was obtained with the highest product yield using Et3N. Scanning electron microscopy analysis manifested agglomeration pertaining to brick-shaped crystals of corticosteroid thiopyran. Synthesized compounds were also found to be active as anti-bacterial agents.
Conclusion: We describe a facile one-pot multi-component synthesis of corticosteroid thiopyran derivatives, which are found to possess anti-bacterial activity. Excellent yields of the products, simple work-up, easily available starting materials, and non-chromatographic purification are some of the main advantages of this protocol.
Keywords: Corticosteroid, thiopyran, anti-bacterial, malononitrile, carbon disulphide, Et3N.
Graphical Abstract
[http://dx.doi.org/10.1016/j.tet.2013.02.018]
[http://dx.doi.org/10.1016/j.steroids.2012.12.003] [PMID: 23287649]
[http://dx.doi.org/10.1016/S0149-2918(01)80114-4] [PMID: 11589254]
[http://dx.doi.org/10.2344/0003-3006-60.1.25] [PMID: 23506281]
[http://dx.doi.org/10.1016/j.steroids.2012.03.002] [PMID: 22445685]
[http://dx.doi.org/10.1016/j.steroids.2013.07.006] [PMID: 23911850]
[http://dx.doi.org/10.1016/j.jsbmb.2013.07.003] [PMID: 23851217]
[http://dx.doi.org/10.1016/j.jsbmb.2013.05.011] [PMID: 23727548]
[http://dx.doi.org/10.4158/EP11061.RA] [PMID: 21742609]
[PMID: 28742501]
[http://dx.doi.org/10.1111/j.1749-6632.1994.tb39257.x] [PMID: 7825890]
[PMID: 12747266]
[http://dx.doi.org/10.1016/j.clim.2017.07.023] [PMID: 28757452]
[http://dx.doi.org/10.1016/S0163-7258(02)00297-8] [PMID: 12441176]
[http://dx.doi.org/10.1134/S1070363217020256]
[http://dx.doi.org/10.6023/cjoc201704004]
[http://dx.doi.org/10.3797/scipharm.aut-00-13]
[http://dx.doi.org/10.1016/j.steroids.2016.09.005] [PMID: 27639101]
[http://dx.doi.org/10.1089/nat.2012.0346] [PMID: 22897207]
[http://dx.doi.org/10.1016/S0065-2725(08)60128-2]
[http://dx.doi.org/10.1016/0040-4020(82)85013-8]
[http://dx.doi.org/10.1016/S0960-894X(02)00604-2] [PMID: 12372526]
[http://dx.doi.org/10.1021/jm011066n] [PMID: 11931617]
[http://dx.doi.org/10.1021/jm0000113] [PMID: 10956195]
[http://dx.doi.org/10.1021/ja063328m] [PMID: 16895386]
[PMID: 11724331]
[http://dx.doi.org/10.1016/S0960-894X(03)00652-8] [PMID: 12941339]
[http://dx.doi.org/10.1080/16583655.2019.1603575]
[http://dx.doi.org/10.1016/j.steroids.2019.02.015] [PMID: 31082411]
[http://dx.doi.org/10.1016/S0378-8741(00)00335-4] [PMID: 11167029]
[http://dx.doi.org/10.1016/j.mseb.2012.02.026]
[http://dx.doi.org/10.1088/0957-4484/18/22/225103]