Four new quinolizidine alkaloids from the flowers of Sophora viciifolia Gao, Dan-Dan ; Zhang, Zhi-Jun ; Li, Hong-Mei ; Chen, Xuan-Qin ; Liu, Dan ; Li, Rong-Tao Abstract Publication: Phytochemistry Letters Pub Date: April 2020 DOI: 10.1016/j.phytol.2020.01.007 Bibcode: 2020PChL...36...91G