title: Stereoselective synthesis and antiviral activity of (1E,2Z,3E)-1-(piperidin-1-yl)-1-(arylhydrazono)-2-[(benzoyl/benzothiazol-2-oyl)hydrazono]-4-(aryl(1))but-3-enes.
abstract: The reaction of benzoyl hydrazine 1a or benzothiazole-2-carbohydrazide 1b with 2-oxo-N-arylpropanehydrazonoyl chlorides 2a-d yielded (1Z,2E)-2-[(benzoyl/benzothiazol-2-oyl)hydrazono]-N-(aryl)propanehydrazonoyl chlorides 3a-e. The reaction of 3a-c with sodium benzenesulphinate furnished sulphones 5a-c while the reaction of 5d, e with hydroxyl amine afforded hydroxomoyl derivatives 6a, b. The one-pot sterioselective reaction of N-(aryl)propanehydrazonoyl chlorides 3 with certain aromatic aldehydes in the presence of piperidine resulted in the formation of (1E,2Z,3E)-1-(piperidin-1-yl)-1-(arylhydrazono)-2-[(benzoyl/benzothiazol-2-oyl)hydrazono]-4-(aryl1)-but-3-enes 7a-g. X-ray analysis of piperidinyl amidrazone 7g showed a conversion of its geometrical structure with respect to that of compound 3 and confirmed the stereoselectivity of the latter reaction. The piperidinyl amidrazones 7a-g possessed a significant antiviral activity against herpes simplex viruses (HSV-1). Compound 7d reduced the number of viral plaques of herpes simplex type-1 (HSV-1) by 67%, with respect to the effect of reference drug Aphidicolin.
authors.affiliation: Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia. hatem_741@yahoo.com
authors.forename: Hatem A
authors.initials: HA
authors.lastname: Abdel-Aziza
authors.forename: Bakr F
authors.initials: BF
authors.lastname: Abdel-Wahab
authors.forename: Farid A
authors.initials: FA
authors.lastname: Badria
mesh_terms: D000998:Antiviral Agents / Q000138:chemical synthesis* / Q000494:pharmacology*; D016590:Aphidicolin / Q000494:pharmacology; D052160:Benzothiazoles / Q000138:chemical synthesis* / Q000494:pharmacology*; D018259:Herpesvirus 1, Human / Q000187:drug effects; D006835:Hydrazones / Q000138:chemical synthesis* / Q000494:pharmacology*; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D013237:Stereoisomerism; D013329:Structure-Activity Relationship
chemical_list: D000998:Antiviral Agents; D052160:Benzothiazoles; D006835:Hydrazones; D016590:Aphidicolin