γ-Carboline derivative with antihistaminic and cognition enhancing activity. Prepn: A. N. Kost et al., Zh. Obshch. Khim. 32, 2050 (1962), C.A. 58, 7917d. Pharmacology: S. K. Shadurskaya et al., Bull. Exp. Biol. Med. 101, 780 (1986); S. Bachurin et al., Ann. N.Y. Acad. Sci. 939, 425 (2001) DOI PubMed. Clinical evaluation in Alzheimer's disease: R. S. Doody et al., Lancet 372, 207 (2008) DOI PubMed.
Antihistaminic; nootropic.