Antifungal Evaluation of Bis Mannich Bases Derived from Acetophenones and Their Corresponding Piperidinols and Stability Studies(Pharmacology)

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概要

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• The development of resistance to current antifungal therapeutics drives the search for effective new agents. The fact that some acetophenone-derived Mannich bases had shown antifungal activities in our previous studies led us to design and synthesize acetophenone-derived bis Mannich bases, B1-B5, bis(β-aroylethyl)methylamine hydrochlorides, to evaluate their antifungal activity. These bis Mannich bases were then converted to the corresponding piperidinols, C1-C5, which are structural isomers of bis derivatives, 3-aroyl-4-aryl-1-methyl-4-piperidinol hydrochlorides, to see alterations in biological activity. A stability study of B1 and C1 was also carried out to estimate whether they alkylate the thiols. All compounds studied have shown antifungal activity, especially against dermatophytes (Trichophyton rubrum, Trichophyton mentagrophytes, Trichophyton tonsurans, and Microsporum canis), in the concentration range studied (2-128μg/ml). The activity was especially apparent against T tonsurans. All compounds had at least equal antifungal activity compared with the reference compound amphotericin-B against T. tonsurans. Bis Mannich bases were generally found to be more potent compounds than their structural isomer piperidinols. The results of our stability studies suggest that thiol alkylation may contribute to the antifungal activity of the Mannich bases synthesized. Even though all compounds showed antifungal activity against dermatophytes, bis Mannich bases B1, B2, B4, and B5 appear to have potential for developing novel antifungal agents against dermatophytes.

• 公益社団法人日本薬学会の論文
• 2002-10-01

著者

• HANNINEN Osmo

  Department of Physiology, Kuopio University Hospital

• Hanninen Osmo

  Department Of Physiology University Of Kuopio

• GuL Halise

  Department of Pharmaceutical Chemistry, Faculty of Pharmacy Ataturk University

• OJANEN Tarja

  Department of Clinical Microbiology Kuopio University Hospital

• Gul Halise

  Department Of Pharmaceutical Chemistry Faculty Of Pharmacy Ataturk University

• Gul Halise

  Department Of Pharmaceutical Chemistry Faculty Of Pharmacy Ataturk University:department Of Physiolo

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