Hypotensive Action of 3α-Dihydrocadambine, An Indole Alkaloid Glycoside of Uncaria Hooks - Aisaka, Kazuo; Hattori, Yoshikazu; Kihara, Tetsuro; Ishihara, Takafumi; Endo, Katsuya; Hikino, Hiroshi (Planta Medica, 1985)