494847-54-0Relevant articles and documents
CCK2 receptor antagonists containing the conformationally constrained phenylalanine derivatives, including the new amino acid Xic
Gibson, Susan E,Guillo, Nathalie,Jones, Jerome O,Buck, Ildiko M,Kalindjian, S.Barret,Roberts, Sonia,Tozer, Matthew J
, p. 379 - 389 (2007/10/03)
The conformationally constrained analogues of phenylalanine, tetrahydroisoquinoline-3-carboxylic acid (Tic), Sic, Hic and Nic, and the new amino acid Xic have been incorporated into a potent and highly selective cholecystokinin-2 (CCK2) receptor antagonist (2) in place of the phenylalanine residue, producing compounds 15a-e. High selectivities for CCK2 over CCK1 were observed for compounds 15a-e. The in vitro profile of the analogue containing the Nic residue (15d) was identical to that of compound 2, whereas the alternative conformational constraints resulted in a significant loss of affinity. The apparent advantage of Nic in the context of these CCK2 ligands was subsequently demonstrated to be statistically significant.