脂水分配系数是反映化合物疏水性质的一种参数,它的定义是一个化合物在脂(如常用的正辛醇)水两相中平衡浓度之比P,常取对数后用logP来表示。化合物的疏水性质对于生物系统非常重要,在生命起源、生物进化及生存过程中起着关键作用,它是定量结构与活性(QSAR)研究方法中的最重要参数之一。因此,建立可靠的logP估算方法的研究工作受到了特別注意。目前最常用的估算方法是碎片加 The lipid-water partition coefficient is a parameter that reflects the hydrophobic nature of a compound. It is defined as the ratio P of the equilibrium concentration of a compound in a lipid (such as common n-octanol) water phase, often expressed logP after logarithmic. Hydrophobicity of compounds is very important for biological systems and plays a key role in the origin of life, biological evolution and survival. It is one of the most important parameters in the quantitative structure and activity (QSAR) research methods. Therefore, special attention has been paid to the research of establishing a reliable logP estimation method. The most commonly used method of estimation is fragmentation