(-)-5α-Hydroxysophocarpine, a New Lupin Alkaloid from the Seeds of Sophora flavescens var. angustifolia1 - Saito, Kazuki; Arai, Noriko; Sekine, Toshikazu; Ohmiya, Shigeru; Kubo, Hajime; Otomasu, Hirotaka; Murakoshi, Isamu (Planta Medica, 1990)