A unique copper‐based catalyst system allows for the N‐acylation of cyclic amines by arylglyoxylic acids via radical‐radical cross‐coupling strategy. As evidenced by EPR, UV‐Vis, and mass spectrometric analysis, the amide linkage formation proceeds through a Cu(I)/Cu(II) catalytic cycle involving a twofold SET process.
Arylpiperazines for Management of Benign Prostatic Hyperplasia: Design, Synthesis, Quantitative Structure−Activity Relationships, and Pharmacokinetic Studies
作者:Amit Sarswat、Rajeev Kumar、Lalit Kumar、Nand Lal、Smriti Sharma、Yenamandra S. Prabhakar、Shailendra K. Pandey、Jawahar Lal、Vikas Verma、Ashish Jain、Jagdamba P. Maikhuri、Diwakar Dalela、Kirti、Gopal Gupta、Vishnu L. Sharma
DOI:10.1021/jm101163m
日期:2011.1.13
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
Synthesis and solid state study of pyridine- and pyrimidine-based fragment libraries
作者:John Spencer、Hiren Patel、Samantha K. Callear、Simon J. Coles、John J. Deadman
DOI:10.1016/j.tetlet.2011.07.147
日期:2011.11
A library of pyridines and pyrimidines has been synthesised in excellent yields employing microwave and flow chemistry methodologies. Work-up bottlenecks have been facilitated substantially by the use of supported reagents and many of the final compounds have been studied in the solid state by single crystal X-ray diffraction. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.