Oleanane-type saponins from Lysimachia laxa Baudo and their antibacterial activities. - Luyen NT; Dat NT; Giang DH; Thuy NTK; Tai BH; Huong PTT; Quynh LTP; Thuy DT; Park S; Nhiem NX (Bioscience, biotechnology, and biochemistry, 2024)