Xiao Shi, Xiu, Dian He, Shao Bai Li, Xin Lei, and Huan Yang. “An Efficient Synthesis of Dichotomine A via Cyclization of L-Tryptophan Derivative”. Asian Journal of Chemistry 25, no. 11 (June 6, 2013): 6387–6390. Accessed July 18, 2024. https://asianpubs.org/index.php/ajchem/article/view/25_12_117.