Lomatiol, the yellow coloring matter surrounding the seeds of several Australian species of Lorna-tia, was first investigated by Rennie'who, after demonstrating its close relationship to lapachol, left further investigation of the pigment to Samuel Cox Hooker. Hooker, 2 in a series of papers closely integrated with those describing his elegant work in the lapachol field, was able to show that the structure 2-hydroxy-3-(3'-hydroxymeth-yl-2'-butenyl)-1, 4- ...
![1,4-Naphthalenedione,2-hydroxy-3-[(2E)-4- hydroxy-3-methyl-2-butenyl]- Structure](https://image.chemsrc.com/caspic/237/523-34-2.png)