title: A novel class of inhibitors for human steroid 5 alpha-reductase: phenoxybenzoic acid derivatives. I.
abstract: In a search for novel nonsteroidal inhibitors of human prostatic 5 alpha-reductase, we found a new series of phenoxybenzoic acid derivatives to be potent human prostatic 5 alpha-reductase inhibitors. Among them, 4-(biphenyl-4-yloxy)benzoic acid derivatives (2n, YM-31758), 2o and 2s showed more potent inhibitory activities than finasteride with IC50 values of 0.87, 0.67 and 0.56 nM, respectively. The optimized structures for the phenoxybenzoic acid derivatives 2d-2i were calculated by molecular modeling analysis, and the favorable distance between the carbon of the carboxyl group and the centroid of the phenyl group (benzene ring C) was found to be in the 9-11 A range.
authors.affiliation: Institute for Drug Discovery Research, Yamanouchi Pharmaceutical Co., Ltd., Ibaraki, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Igarashi
authors.forename: T
authors.initials: T
authors.lastname: Kimura
authors.forename: R
authors.initials: R
authors.lastname: Naito
authors.forename: H
authors.initials: H
authors.lastname: Hara
authors.forename: M
authors.initials: M
authors.lastname: Fujii
authors.forename: H
authors.initials: H
authors.lastname: Koutoku
authors.forename: H
authors.initials: H
authors.lastname: Oritani
authors.forename: T
authors.initials: T
authors.lastname: Mase
mesh_terms: D058891:5-alpha Reductase Inhibitors; D000818:Animals; D001565:Benzoates / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D002478:Cells, Cultured; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004791:Enzyme Inhibitors / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D005347:Fibroblasts; D006801:Humans; D066298:In Vitro Techniques; D008297:Male; D011467:Prostate / Q000187:drug effects / Q000201:enzymology; D051381:Rats; D017208:Rats, Wistar
chemical_list: D058891:5-alpha Reductase Inhibitors; D001565:Benzoates; D004791:Enzyme Inhibitors