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  • Synthesis, antimicrobial, and anti-inflammatory activities of novel 2-[3-(1-adamantyl)-4-substituted-5-thioxo-1,2,4-triazolin-1-yl] acetic acids, 2-[3-(1-adamantyl)-4-substituted-5-thioxo-1,2,4-triazolin-1-yl]propionic acids and related derivatives.

Synthesis, antimicrobial, and anti-inflammatory activities of novel 2-[3-(1-adamantyl)-4-substituted-5-thioxo-1,2,4-triazolin-1-yl] acetic acids, 2-[3-(1-adamantyl)-4-substituted-5-thioxo-1,2,4-triazolin-1-yl]propionic acids and related derivatives.

Arzneimittel-Forschung (2006-02-16)
Omar A Al-Deeb, Mohamed A Al-Omar, Nasser R El-Brollosy, Elsayed E Habib, Tarek M Ibrahim, Ali A El-Emam
RESUMO

The reaction of 3-(1-adamantyl)-4-substituted-1,2,4-triazoline-5-thiones 3a-g with sodium chloroacetate, in ethanolic sodium hydroxide yielded the corresponding N1-acetic acid derivatives 4a-g. The interaction of 3a-g with ethyl 2-bromopropionate in acetone, in the presence of potassium carbonate, yielded the corresponding N1-ethyl propionate derivatives 5a-g, which upon hydrolysis with aqueous sodium hydroxide afforded the corresponding propionic acid derivatives 6a-g. Similarly, the reaction of 3-(1-adamantyl)-4-amino-1,2,4-triazoline-5-thione 7 with sodium chloroacetate in ethanolic sodium hydroxide yielded the corresponding N1-acetic acid derivative 8. On the other hand, the reaction of 2-(1-adamantyl)-1,3,4-oxadiazoline-5-thione 9 with sodium chloroacetate yielded the corresponding S-acetic acid derivative 10. Compounds 4a-g, 5b, 5c, 5g, 6a-g, 8 and 10 were tested for in vitro activities against a panel of Gram-positive and Gram-negative bacteria and the yeast-like pathogenic fungus Candida albicans. Several derivatives produced good or moderate activities particularly against Bacillus subtilis. In addition, the in vivo anti-inflammatory activities of these compounds were determined using the carrageenin-induced paw oedema method in rats. Compounds 4a, 4b, 4e, 4f, 6f, 6g and 10 produced good dose-dependent anti-inflammatory activities.

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Sigma-Aldrich
Sodium chloroacetate, 98%

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