Fig. 1 in Anti-tumor alkaloids from Peganum harmala

Fig. 1. Chemical structures of the compounds 1–20.Published as part of Zhang, Qin, Zan, Yan-Hui, Yang, Han-Gao, Yang, Meng-Yue, Liu, Fang-Shen, Li, Sheng-Ge, Peng, Xiao-Hui, Lin, Bin, Li, Zhan-Lin, Li, Da-Hong & Hua, Hui-Ming, 2022, Anti-tumor alkaloids from Peganum harmala, pp. 1-7 in Phytochemistry (113107) 197 on page 3, DOI: 10.1016/j.phytochem.2022.113107, http://zenodo.org/record/823707