title: Synthesis and antimicrobial activity of cholic acid hydrazone analogues.
abstract: Synthesis and antimicrobial activity of cholic acid analogues 4a-t are reported. The synthesis of 4a-t was accomplished from ethylcholate 2. The hydrazone moiety was introduced via coupling of the cholic acid hydrazide (3) with appropriately functionalized aldehyde utilizing acetic acid as a catalyst. Quiet of interest in relation to the synthesized hydrazones is the formation of two rotamers s-cis.E and s-trans.E. Most compounds showed stronger antimicrobial activity against Gram-positive bacteria than Cefaclor and Cefixime. Compounds 4d, 4i and 4j indicated 15-fold stronger antimicrobial activities against Enterobacter faecalis compared to Cefaclor and Cefixime. Some of the synthesized compounds (e.g. 4a, 4c, 4d, 4i, and 4l) reflected two-folds less activity against Escherichia coli relative to Cefixime.
authors.affiliation: Department of Chemistry, The University of Jordan, Amman 11942, Jordan.
authors.forename: Anas J M
authors.initials: AJ
authors.lastname: Rasras
authors.forename: Taleb H
authors.initials: TH
authors.lastname: Al-Tel
authors.forename: Amal F
authors.initials: AF
authors.lastname: Al-Aboudi
authors.forename: Raed A
authors.initials: RA
authors.lastname: Al-Qawasmeh
mesh_terms: D000890:Anti-Infective Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects; D019826:Cholic Acid / Q000737:chemistry*; D006835:Hydrazones / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D000890:Anti-Infective Agents; D006835:Hydrazones; D019826:Cholic Acid