This steroidal alkaloid obtained from Fritillaria verticillata var. Thunbergii is the ketone corresponding to Verticine. The structure based on analogy and biogenic considerations has been confirmed by an X-ray analysis of the methobromide, m.p. 287°C by the heavy atom method.
Pringle, Brown., Nature, 181,1205 (1958)
Pringle, Brown., Phytopathology, SO, 324 (1960)
Dorn, Arigoni., 1. Chern. Soc., Chern. Cornrnun., 1342 (19n)
