Answers are grounded in this paper and cite their sources.
From the leaves of Strobilanthes cusia, a folk remedy for athlete's foot in Okinawa, tryptanthrin was isolated as a strong antifungal substance against dermatophytes. Key Word Index Strobilanthes cusia - Tryptanthrin - Antifungal Activity
No takes yet. Share an insight, caveat, or question.
Honda et al. (1979) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: