2 First People's Hospital of Shangqiu, Shangqiu 476000, Henan Province, China. yataowangjlu@outlook.com.
3 Department of Orthopedics, China-Japan Union Hospital, Jilin University, Changchun 130033, China.
4 Gordon Center for Medical Imaging, Massachusetts General Hospital, Harvard Medical School, 125 Nashua Street, Suite 660, Boston, Massachusetts 02114, USA. jwang83@mgh.harvard.edu.
Retraction of 'Recent advances in total synthesis of protoberberine and chiral tetrahydroberberine alkaloids' by Zhen-Xi Niu et al., Nat. Prod. Rep., 2024, https://doi.org/10.1039/d4np00016a.