title: Optically active antifungal azoles. V. Synthesis and antifungal activity of stereoisomers of 3-azolyl-2-(substituted phenyl)-1-(1H-1,2,4-triazol-1-yl)-2- butanols.
abstract: The (2S,3S)-, (2R,3S)- and (2S,3R)-stereoisomers of (2R,3R)-3-azolyl-2-(substituted phenyl)-1-(1H-1,2,4-triazol-1-yl)-2-butanols [(2R,3R)-1a--d] were prepared and evaluated for antifungal activity against Candida albicans in vitro and in vivo to clarify the relationships between stereochemistry and biological activities. The results revealed that the in vitro antifungal activity in each set of the four stereoisomers [(2R,3R)-, (2S,3S)-, (2R,3S)- and (2S,3R)-1a--d] definitely paralleled the in vivo antifungal activity against candidosis in mice, and the order of potency was (2R,3R) >> (2R,3S) > or = (2S,3S) > or = (2S,3R). In addition, the four stereoisomers in each set were assessed for sterol biosynthesis-inhibitory activities in C. albicans and rat liver. The (2R,3R)-isomer was found to exert a strong and selective inhibitory effect on the sterol synthesis in C. albicans as compared with that in rat liver.
authors.affiliation: Pharmaceutical Research Laboratories III, Takeda Chemical Industries, Ltd., Osaka, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Tasaka
authors.forename: N
authors.initials: N
authors.lastname: Tsuchimori
authors.forename: T
authors.initials: T
authors.lastname: Kitazaki
authors.forename: K
authors.initials: K
authors.lastname: Hiroe
authors.forename: R
authors.initials: R
authors.lastname: Hayashi
authors.forename: K
authors.initials: K
authors.lastname: Okonogi
authors.forename: K
authors.initials: K
authors.lastname: Itoh
mesh_terms: D000818:Animals; D000935:Antifungal Agents / Q000138:chemical synthesis* / Q000494:pharmacology*; D001393:Azoles / Q000138:chemical synthesis* / Q000494:pharmacology*; D000440:Butanols / Q000138:chemical synthesis* / Q000494:pharmacology*; D002176:Candida albicans / Q000187:drug effects; D002177:Candidiasis / Q000188:drug therapy; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D005260:Female; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D051381:Rats; D011916:Rats, Inbred F344; D013237:Stereoisomerism; D013329:Structure-Activity Relationship
chemical_list: D000935:Antifungal Agents; D001393:Azoles; D000440:Butanols