A novel cyclohexene compound (1), which is structurally related to theobrox
ide (2), was isolated from a culture filtrate of the fungus, Lasiodiplodia
theobromae IFO 31059, The potato micro-tuber-inducing activity of this comp
ound was observed at a concentration of 10(-3) M in the medium, whereas the
obroxide (2) showed its activity at 10(-5) M.