Peripheral kappa opioid receptor agonist. Prepn of racemate: NL 80 03601; D. R. Torossian et al., US 4301163 (both 1981 to Soc. Ind. Prod. Synth.); of isomers: G. G. Aubard et al., EP 384088; eidem, US 5245080 (1990, 1993 both to Jouveinal). Mechanism of action and pharmacokinetics in dogs: N. Pascaud et al., J. Pharm. Pharmacol. 42, 546 (1990). Clinical trial in nonulcer dyspepsia: B. Fraitag et al., Dig. Dis. Sci. 39, 1072 (1994).
Gastroprokinetic.
Gastroprokinetic