title: Quantitative structure-cytotoxicity relationship analysis of betulinic acid and its derivatives by semi-empirical molecular-orbital method.
abstract: A semi-empirical molecular-orbital method (CAChe) demonstrates that the cytotoxicity of betulinic acid derivatives can be predicted by several physical parameters (such as heat of formation, hydrophobicity (log P), watersolubility, ionization potential, electron affinity, dipole moment), but not by molecular size (maximum length and width). The present study demonstrates how this method can be applied to estimate the cytotoxic activity of structurally-related compounds.
authors.affiliation: Division of Basic Chemistry, Department of Oral Biology and Tissue Engineering and Meikai University School of Dentistry, Sakado, Saitama, Japan. mariko@dent.meikai.ac.jp
authors.forename: Mariko
authors.initials: M
authors.lastname: Ishihara
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Sakagami
authors.forename: Wing-Keung
authors.initials: WK
authors.lastname: Liu
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry* / Q000494:pharmacology*; D006863:Hydrogen-Ion Concentration; D008956:Models, Chemical; D008958:Models, Molecular; D053978:Pentacyclic Triterpenes; D021281:Quantitative Structure-Activity Relationship; D012995:Solubility; D014315:Triterpenes / Q000737:chemistry* / Q000494:pharmacology*; D000094062:Betulinic Acid
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D053978:Pentacyclic Triterpenes; D014315:Triterpenes; D000094062:Betulinic Acid