Modifications of the hydrophobic character at the 7 and 10 positions of the taxoids greatly modified the effect of these drugs on the tubulin-microtubule system. The presence of an alkyl chain at these positions decreased the activity while their corresponding more polar analogues restored the activity of these molecules. It appears that the recognition of taxoids by tubulin depends on the location of the most important hydrophobic area. (C) 2000 Elsevier Science Ltd. All rights reserved.
[EN] DRUG CONJUGATES OF LONG CHAIN FATTY ACID OR ESTER MOIETIES AS PROTEIN BINDING PRODRUGS<br/>[FR] COMPOSÉS
申请人:DRUG DISCOVERY LAB AS
公开号:WO2006030217A3
公开(公告)日:2007-03-22
Didanosine ester prodrugs: Synthesis, albumin binding properties and pharmacokinetic studies in rats
Three half-ester derivatives 10–12 of 5′-O-2′,3′-dideoxydidanosine (DDI, 1) have been synthesized. The compounds exhibited excellent correlation between partition coefficients Log P and relative in vitro bovine serum albumin binding. Using high-performance liquid chromatography–mass spectrometry (LC–MS), DDI (1) was quantitatively determined in rat plasma after intravenous injection of the azelaic
合成了3个5'- O -2',3'-二脱氧二danosine(DDI,1)的半酯衍生物10 – 12。这些化合物在分配系数Log P和相对的体外牛血清白蛋白结合之间显示出极好的相关性 。使用高效液相色谱-质谱(LC-MS),在静脉注射DDI的壬二酸单酯衍生物(11)后,在大鼠血浆中定量测定了DDI(1)。DDI的药代动力学数据与文献一致。11的药代动力学曲线显示,AUC 0–360无显着差异或与母药DDI(1)相比的曲线形状。数据表明,前药在给药后数分钟内转化为DDI。较高的体外蛋白质相对结合率使使用更稳定的接头键可以保证该概念的有效性。