Bioactive saponins and glycosides. V. Acylated polyhydroxyolean-12-ene triterpene oligoglycosides, camelliasaponins A1, A2, B1, B2, C1, and C2, from the seeds of Camellia japonica L.: structures and inhibitory activity on alcohol absorption - Yoshikawa, M; Murakami, T; Yoshizumi, S; Murakami, N; Yamahara, J; Matsuda, H (Chem Pharm Bull, 1996)