Saponin and Sapogenol. XXXV. Chemical constituents of astragali radix, the root of Astragalus membranaceus bunge.(2) Astragalosides I, II and IV, Acetylastragaloside I and Isoastragalosides I and II - Kitagawa, I; Wang, H K; Saito, M; Takagi, A; Yoshikawa, M (Chem Pharm Bull, 1983)