Development of a Divergent Synthetic Route to the Erythrina Alkaloids: Asymmetric Syntheses of 8-Oxo-erythrinine, Crystamidine, 8-Oxo-erythraline, and Erythraline
Umihara, H.; Yoshiko, T.; Shimokawa, J.; Kitamura, M.; Fukuyama, T. Angew. Chem. Int. Ed. 2016, 55, 6915–6918