Quantum Chemical Descriptor Based QSAR Study on β-Carbolines Binding to Benzodiazepine Receptor

QSAR study of derivatives of P-carboline has been made with the help of quantum chemical descriptors. For QSAR study, the molecular modeling and geometry optimization for all the derivatives were carried out with CAChe Pro software using PM3 methods. QSAR model, "RE23 = -0.0141829*Delta H(f)(0) + 0.0428252*M(w) + 0.150185*E(T) -1.42607*epsilon LUMO + 5.56043" can be useful for predicting the activity of new beta-carbolines prior to their synthesis. Delta H(f)(0), M(w), E(T) and epsilon LUMO are reliable descriptor for predicting activity. QSAR model indicates that these descriptors have significant relationships with observed bioactivity.