Arylpiperazines for Management of Benign Prostatic Hyperplasia: Design, Synthesis, Quantitative Structure−Activity Relationships, and Pharmacokinetic Studies
摘要:
A series of 27 aryl/heteroaryl/aralkyl/aroyl piperazines were synthesized, and most of these compounds reduced prostate weight of mature rats by 15-47% Three compounds, 10, 12, and 18, had better activity profile (reduced prostate weight by 47%, 43%, and 39%, respectively) than the standard drug flutamide (24% reduction) QSAR suggested structures with more cyclic and branched moieties, increased topological separation of 0 and N therein, and reduced solvation connectivity index for better activity Pharmacokinetic study with compound 10 at an oral dose of 10 0 mg/kg indicated good absorption, negligible extrahepatic elimination, and rapid distribution to the target organ (prostate) but restricted entry through the blood brain barrier A 10-fold decrease in PSA and 15-fold increase in ER-beta gene expressions of human prostate cancer cells (LNCaP) by compound 10 in vitro indicated AR and ER-beta mediated actions The findings may stimulate further explorations of identified lead for the management of benign prostatic hyperplasia