title: New dioxazole derivatives: Synthesis and effects on the growth of Entamoeba histolytica and Giardia intestinalis.
abstract: Cyclization of oxime with different aldehydes and ketones under basic condition led to the formation of new dioxazole derivatives and the structure was elucidated by spectral data. The effects of diaoxazoles on the inhibition of growth of Entamoeba histolytica and Giardia intestinalis in vitro have been determined, and selected compounds further investigated for their toxicity. SAR showed that the compounds with 5-nitrothiophene group at the 3-postion of the diaoxazole ring were more active than those with the p-toluene group at the same position. It is interesting to note that the compounds found active against E. histolytica were not found active against G. intestinalis. Toxicity studies showed that the compound 8 and 9 were non-toxic against Vero cell line ATCC CCL-81.
authors.affiliation: Department of Chemistry, Jamia Millia Islamia, Jamia Nagar, New Delhi-110025, India.
authors.forename: Iram
authors.initials: I
authors.lastname: Irfan
authors.forename: Nongyao
authors.initials: N
authors.lastname: Sawangjaroen
authors.forename: Abdul R
authors.initials: AR
authors.lastname: Bhat
authors.forename: Amir
authors.initials: A
authors.lastname: Azam
mesh_terms: D000818:Animals; D002522:Chlorocebus aethiops; D004748:Entamoeba histolytica / Q000187:drug effects* / Q000254:growth & development; D016829:Giardia lamblia / Q000187:drug effects* / Q000254:growth & development; D009682:Magnetic Resonance Spectroscopy; D010080:Oxazoles / Q000138:chemical synthesis / Q000494:pharmacology*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013329:Structure-Activity Relationship; D014709:Vero Cells
chemical_list: D010080:Oxazoles