Dehydro-α-lapachone can be isolated from the methanol extract of stems of Catalpa ovata G Don. Dehydro-α-lapachone inhibits mycelial growth of Botrytis cinerea with IC50 value 0.41 mg/L[1].
References
[1] Jun Young Cho, et al. Dehydro-α-lapachone isolated from Catalpa ovata stems: activity against plant pathogenic fungi. Pest Management Science. 2006, 62.
