Pg. Baraldi et al., Synthesis of conformationally constrained analogues of KN62, a potent antagonist of the P2X(7)-receptor, BIOORG MED, 10(7), 2000, pp. 681-684
Conformationally constrained analogues of KN62 containing 1,2,3,4-tetrahydr
o-7-hydroxyisoquinoline-3-carboxylic acid with S configuration in position
3 were synthesized and their antagonist activities were tested on human mac
rophage cells. While KN62 is a potent antagonist of the P2X(7) receptor, th
ese analogues were inactive as antagonists and only one compound showed app
reciable activity as P2X(7) antagonist, which was 30 times weaker than that
reported for KN62. (C) 2000 Elsevier Science Ltd. All rights reserved.