Title: Alpneumines A-H, new anti-melanogenic indole alkaloids from Alstonia pneumatophora.
Journal: Bioorganic & medicinal chemistry 20100615
Title: Koichiro Koyama, et al. Alpneumines A-H, new anti-melanogenic indole alkaloids from Alstonia pneumatophore. Bioorg Med Chem. 2010 Jun 15;18(12):4415-21.