title: Molecular and pharmacokinetic properties of 222 commercially available oral drugs in humans.
abstract: This study was performed to determine the exclusion criteria that differentiate poorly absorbed drugs from good drug candidates, and to accelerate drug development by exclusion of unnecessary assessment. The molecular and pharmacokinetic properties of 222 commercially available oral drugs were tabulated and their correlations were analyzed. The exclusion criteria obtained were 1) a molecular weight of more than 500, and 2) a ClogP value of more than 5. Exceptions to molecular weight criteria were compounds with a sugar moiety, high atomic weight, and large cyclic structure. It was also suggested that being a substrate for MDRI (P-glycoprotein) does not always result in poor bioavailability, and that drug development by chemical modification of a seed or lead compound with quantitative structure activity relationship analysis can result in lower bioavailability, higher bound fraction and lower urinary excretion, which would hamper later development processes and might result in considerable drug-drug interaction. The criteria should be adjusted according to the pharmacological profiles of the agents in question and depending on the estimated profit, but ignoring these criteria may result in a significant waste of time and money during drug development.
authors.affiliation: Department of Hospital Pharmacy, School of Medicine, Kobe University, Japan. sakaedat@med.kobe-u.ac.jp
authors.forename: T
authors.initials: T
authors.lastname: Sakaeda
authors.forename: N
authors.initials: N
authors.lastname: Okamura
authors.forename: S
authors.initials: S
authors.lastname: Nagata
authors.forename: T
authors.initials: T
authors.lastname: Yagami
authors.forename: M
authors.initials: M
authors.lastname: Horinouchi
authors.forename: K
authors.initials: K
authors.lastname: Okumura
authors.forename: F
authors.initials: F
authors.lastname: Yamashita
authors.forename: M
authors.initials: M
authors.lastname: Hashida
mesh_terms: D000284:Administration, Oral; D000890:Anti-Infective Agents / Q000737:chemistry / Q000493:pharmacokinetics; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000737:chemistry / Q000493:pharmacokinetics; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D006801:Humans; D008970:Molecular Weight; D004364:Pharmaceutical Preparations / Q000737:chemistry* / Q000378:metabolism*; D010599:Pharmacokinetics
chemical_list: D000890:Anti-Infective Agents; D000894:Anti-Inflammatory Agents, Non-Steroidal; D004364:Pharmaceutical Preparations