Cyclic deriv of γ-aminobutyric acid. Prepn: H. Betzing et al., DE 2924011; eidem, US 4341790 (1980, 1982 both to Nattermann). Cognition enhancing effects in rats: T. Sakurai et al., Jpn. J. Pharmacol. 50, 47 (1989). HPLC determn in serum and urine: Y. Fujimaki et al., J. Chromatogr. 575, 261 (1992). Clinical pharmacokinetics: eidem, Xenobiotica 23, 61 (1993). Series of articles on pharmacology and toxicology: Arzneim.-Forsch. 44, 193-259 (1994).
Nootropic.
Nootropic