Heteryunine A, an amidated tryptophan-catechin-spiroketal hybrid with antifibrotic activity from Heterosmilax yunnanensis. - Du, Rong-Rong; Wang, Ruo-Yu; Zhou, Ji-Chao; Gao, Huan-Huan; Qin, Wen-Jie; Duan, Xiu-Mei; Yang, Ya-Nan; Zhang, Xiao-Wei; Zhang, Pei-Cheng (Bioorganic Chemistry, 2024)