Nitensidine D is a toxic alkaloid natural product that was isolated from the leaves of the South American legume Pterogyne nitens. It is also hypothesized to be a possible intermediate in the still unknown, seemingly monoterpene based, terrestrial biosynthetic pathway for tetrodotoxin.
↑Regasini, Luis Octávio; Castro-Gamboa, Ian; Silva, Dulce Helena Siqueira; Furlan, Maysa; Barreiro, Eliezer Jesus; Ferreira, Paulo Michel Pinheiro; Pessoa, Cláudia; Lotufo, Letícia Veras Costa; de Moraes, Manoel Odorico; Young, Maria Claudia Marx; Bolzani, Vanderlan da Silva (2009-03-27). "Cytotoxic Guanidine Alkaloids fromPterogyne nitens△". Journal of Natural Products. 72 (3). American Chemical Society (ACS): 473–476. Bibcode:2009JNAtP..72..473R. doi:10.1021/np800612x. ISSN0163-3864. PMID19159272.
↑Kudo, Yuta; Yotsu-Yamashita, Mari (2019-05-22). "Isolation and Biological Activity of 8-Epitetrodotoxin and the Structure of a Possible Biosynthetic Shunt Product of Tetrodotoxin, Cep-226A, from the Newt Cynops ensicauda popei". Journal of Natural Products. 82 (6). American Chemical Society (ACS): 1656–1663. Bibcode:2019JNAtP..82.1656K. doi:10.1021/acs.jnatprod.9b00178. ISSN0163-3864. PMID31117524. S2CID162180379.