(αR,8aS)-GSK1614343 (compound 18a, d2) is a cyclized ghrelin antagonist with an pIC50 value of 8.4. (αR,8aS)-GSK1614343 shows a competitive antagonism of hGHSR1a with a mean pKb value of 8.06[1].
(αR,8aS)-GSK1614343 (0.1-1μM) demonstrats a surmountable and competitive antagonism of hGHSR1a with a mean p KB value of 8.06[1].
(αR,8aS)-GSK1614343 (10 mg/kg; i.v. once) inhibits GH release induced by exogenous ghrelin administration[1].
(αR,8aS)-GSK1614343 (i.v. and p.o.) exhibits good oral bioavailability (F=46%), a limited clearance in blood (Clb=28 mL/min/kg) and a suitable half-life (5.0 h). In terms of rat brain penetration, a brain to blood AUC
[1]. https://pubmed.ncbi.nlm.nih.gov/20593439/