title: Synthesis and antimicrobial evaluation of some new substituted purine derivatives.
abstract: A series of 8,9-disubstituted adenines (4, 5, 8), 6-substituted aminopurines (10-13) and 9-(p-fluorobenzyl/cyclopentyl)-6-substituted aminopurines (16, 17, 19-30) have been prepared and the antimicrobial activities of these compounds against Staphylococcus aureus, methicillin-resistant S. aureus (MRSA, standard and clinical isolate), Bacillus subtilis, Escherichia coli and Candida albicans were evaluated. 6-[(N-phenylaminoethyl)amino]-9H-purine (12) which has no substitution at N-9 position and 9-cyclopentyl-6-[(4-fluorobenzyl)amino]-9H-purine (24) exhibited excellent activity against C. albicans with MIC 3.12 microg/mL. These compounds displayed better antifungal activity than that of standard oxiconazole. Furthermore, compound 22 carrying 4-chlorobenzylamino group at the 6-position of the purine moiety exhibited comparable antibacterial activity with that of the standard ciprofloxacin against both of the drug-resistant bacteria (MRSA, standard and clinical isolate).
authors.affiliation: Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ankara University, Tandoğan, Ankara, Turkey. tuncbile@pharmacy.ankara.edu.tr
authors.forename: Meral
authors.initials: M
authors.lastname: Tunçbilek
authors.forename: Zeynep
authors.initials: Z
authors.lastname: Ateş-Alagöz
authors.forename: Nurten
authors.initials: N
authors.lastname: Altanlar
authors.forename: Arzu
authors.initials: A
authors.lastname: Karayel
authors.forename: Süheyla
authors.initials: S
authors.lastname: Ozbey
mesh_terms: D000890:Anti-Infective Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D016106:Methicillin Resistance / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D011687:Purines / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D013211:Staphylococcus aureus / Q000187:drug effects; D013329:Structure-Activity Relationship
chemical_list: D000890:Anti-Infective Agents; D011687:Purines