Lipophilicity of regioisomers: a case study on 3(2H)-pyridazinones

Autor: László Károlyházy, Krisztina Takács-Novák, Massud A. S. Anwair, Diana Rita Szabó, Péter Mátyus, András P. Borosy
Rok vydání: 2002
Předmět:
Zdroj: Journal of Molecular Structure: THEOCHEM. 578:89-91
ISSN: 0166-1280
DOI: 10.1016/s0166-1280(01)00685-6
Popis: Two pairs of 4- and 5-aminopyridazinone regioisomers were prepared and the logarithm of their octanol/water partition coefficients (log P ) was determined experimentally. The experimental log P values of the 4-isomers were found to be significantly higher than those of the respective 5-isomers. The log P values were also calculated by 3DNET, Q log P , Ghose–Crippen, Villar, ScilogPUltra and KOWWIN (with EVA) methods. Of them, only the last two methods were able to reproduce the observed tendency.
Databáze: OpenAIRE