Wt. Ashton et al., Substituted indole-5-carboxamides and -acetamides as potent nonpeptide GnRH receptor antagonists, BIOORG MED, 11(13), 2001, pp. 1723-1726
The 2-aryltryptamine class of GnRH receptor antagonists has been modified t
o incorporate carboxamide and acetamide substituents at the indole 5-positi
on. With either a phenol or methanesulfonamide terminus on the N-aralkyl si
de chain, potent binding affinity to the GnRH receptor was achieved. A func
tional assay for GnRH antagonism was even more sensitive to structural modi
fication and revealed a strong preference for branched tertiary amides. (C)
2001 Elsevier Science Ltd. All rights reserved.