Aza-bicyclic amino acid sulfonamides as α4β1/α4β7 integrin antagonists
摘要:
The design, synthesis, and biological activity of novel alpha(4)beta(1) and alpha(4)beta(7) integrin antagonists, containing a bridged azabicyclic nucleus, are reported. Conformational analysis of targets containing an azabicyclo[2.2.2]octane carboxylic acid and known integrin antagonists indicated that this azabicycle would be a suitable molecular scaffold. Variation of substituents on the pendant arylsulfonamide and phenylalanine groups resulted in potent alpha(4)beta(1)-selective and dual alpha(4)beta(1)/alpha(4)beta(7) antagonists. Potent compounds 11i, 11h, and 14 were effective in the antigen-sensitized sheep model of asthma. (C) 2003 Elsevier Science Ltd. All rights reserved. (C) 2003 Elsevier Ltd. All rights reserved.
Discovery of new SCH 39166 analogs as potent and selective dopamine D1 receptor antagonists
作者:Li Qiang、T.K. Sasikumar、Duane A. Burnett、Jing Su、Haiqun Tang、Yuanzan Ye、Robert D. Mazzola、Zhaoning Zhu、Brian A. McKittrick、William J. Greenlee、Ahmad Fawzi、Michelle Smith、Hongtao Zhang、Jean E. Lachowicz
DOI:10.1016/j.bmcl.2009.12.100
日期:2010.2
A series of novel dopamine D-1 antagonists derived from functionalization of the D-ring of SCH 39166 were prepared. A number of these compounds displayed subnanomolar D-1 activity and more than 1000-fold selectivity over D-2. We found C-3 derivatization afforded compounds with superior overall pro. le in comparison to the C-2 and C-4 derivatization. A number of highly potent D-1 antagonists were discovered which have excellent selectivity over other dopamine receptors and improved PK pro. le compared to SCH 39166. (C) 2009 Elsevier Ltd. All rights reserved.