Abstract
Two species of the genus Corydalis ( C. incisa and C. ambigua) were phytochemically studied for their fungitoxic alkaloids. Thirteen alkaloids were isolated and identified by spectroscopic methods including mass and NMR techniques. Compounds 1 (corynoline) and 2 (acetylcorynoline) were found to be the main active compounds. The new compound 3 (named coryincine) has no fungitoxic activity. Structure–activity relationships among compounds 1– 3 are discussed.
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