The aqueous extract of the Chinese crude drug Alismatis rhizoma, a dried rhizome of Alisma orientale Juzepczuk, exhibited in vitro inhibitory activities on angiotensin II and arginine vasopressin binding to theirreceptors. A fractionation study on the extract clarified that the known terpenoidal
The improving effects of various components of Toki-Shakuyaku-San (TSS) and fractions isolated from Angelica acutiloba Radix (Toki) on scopolamine-induced spatial memory impairment were investigated in eight-armed radial maze. The scopolamine-induced memory impairment was characterized by prominent