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#24293403 2013/12/02 To Up
Synthesis of some heterofunctionalized penicillanic acid derivatives and investigation of their biological activities.
6-Substituted amino-penicillanic acid esters were synthesized starting with 6-apa. The compounds containing a 1,3-thiazole- or 1,3-thiazolidinone nucleus linked to the penicillanic acid skeleton via a hydrazino linkage were obtained from 6-apa. The treatment of carbonylamino and carbonothioylamino compounds with 4-chlorophenacyl bromide or ethyl bromoacetate gave 6-bis{4-[1,3-thiazol(idinone)amino]benzoyl}amino derivatives of 6-apa. Benzyl derivatives were synthesized in several steps, starting with 4-aminobenzoyl chloride. The treatment of 4-{[3-benzyl-4-oxo-1,3-thia(oxa)zolidin-2-ylidene]amino}benzoyl chlorides with 6-apa in ethanolic solution produced the 6-[bis(4-{[3-benzyl-4-oxo-1,3-thiazolidin-2-ylidene]amino}benzoyl)amino] derivative of penicillanic acid, while the reaction of the same intermediates in DMF gave the mono-substituted amino derivative of 6-apa. The synthesized compounds were screened for their biological activities, and some of them were found to possess good to moderate antimicrobial activity. Moreover, some of the compounds displayed antiurease, anti-β-lactamase, and/or antilipase activities.Serpil Demirci, Ahmet Demirbas, Serdar Ulker, Sengul Alpay-Karaoglu, Neslihan Demirbas
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10 mg 5 G1 mg2 g25 mg500 mg100ug Lyophilized 100 G 1 G 25 G 1 G 25 GRelated Pathways
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