Evaluation of Dynamic Polar Molecular Surface Area as Predictor of Drug Absorption: Comparison with Other Computational and Experimental Predictors
作者:Katrin Palm、Kristina Luthman、Anna-Lena Ungell、Gert Strandlund、Farideh Beigi、Per Lundahl、Per Artursson
DOI:10.1021/jm980313t
日期:1998.12.1
between various molecular descriptors and transport of drugs across the intestinal epithelium was evaluated. The monolayer permeability (Pc) of human intestinal Caco-2 cells to a series of nine beta-receptor-blocking agents was investigated in vitro. The dynamic polar molecular surface area (PSAd) of the compounds was calculated from all low-energy conformations identified in molecular mechanics calculations
评价了各种分子描述符与药物跨肠上皮运输的关系。体外研究了人类肠道Caco-2细胞对一系列九种β受体阻滞剂的单层渗透性(Pc)。化合物的动态极性分子表面积(PSAd)是根据在真空中以及在模拟的氯仿和水环境中进行的分子力学计算中确定的所有低能构象计算得出的。对于大多数研究的药物,不同环境对PSAd的影响很小。H 216/44是一个例外,它是一种大型柔性化合物,其中包含几个能够进行氢键键合的官能团(PSAd,氯仿= 70.8 A2,PSAd,水= 116.6 A2)。Pc和PSAd之间的关系比Pc和计算的辛醇/水分配系数(log Dcalc)或实验确定的固定脂质体色谱(ILC)保留之间的关系更强。根据九种化合物的一个子集的结构-渗透率关系预测了两种新的普西洛尔类似物和H 216/44的Pc值,并将其与实验值进行了比较。从PSAd计算和ILC保留研究中可以很好地预测出两种Practolol类似物的Pc值。H