[EN] PLINABULIN PRODRUG ANALOGS AND THERAPEUTIC USES THEREOF<br/>[FR] ANALOGUES DE PROMÉDICAMENTS À BASE DE PLINABULINE ET UTILISATIONS THÉRAPEUTIQUES ASSOCIÉES
申请人:TOKYO UNIVERSITY OF PHARMACY AND LIFE SCIENCES
公开号:WO2012035436A1
公开(公告)日:2012-03-22
Compounds of Formula (I) and (I') are disclosed, as are methods for making such compounds. Compositions and methods for treating various disease conditions including cancer and non-cancer diseases associated with vascular proliferation are also disclosed. (Formula (I) & (I'))
Plinabulin (1) is a potent anti-microtubule agent, however, its low water solubility has to be improved for the advantage in pharmacokinetics and chemotherapy. In this report, the replaceable water-solubilizing moiety of the water-soluble prodrug of plinabulin (1) was investigated. The properties of the water-soluble prodrugs of plinabulin (1), in which the water-solubilizing part was replaced with a new functionality, were evaluated. The newly introduced water-solubilizing moiety provided interesting effects on the water solubility and half-life of the prodrugs.
(+)-Negamycin was prepared in 13 steps in an overall yield of 31% from commercially available ethyl (R)-(+)-4-chloro-3-hydroxybutanoate. The key step in the reaction sequence was a highlystereoselectiveasymmetricMichaeladdition of chiral amine (−)-21 [(1S,2R)-(−)-2-methoxybornyl-10-benzylamine] into the α,β-unsaturated carbonyl moiety of key intermediate 8, thus establishing the second chiral center