As one of studies on active principles of tar, antifungal constituents in charred egg yolk or in egg tar were examined. Four active principles, (I), (II), (III), and (IV), were isolated by a suitable combination of counter-current distribution and column chromatography.(I) mp 195°, C
11H
8N
2, (II), mp 232°, C
12H
10N
2, (III), mp 217° (picrate), C
16H
18N
2 (m/e238), and (IV), mp 236-238° (picrate), C
16H
18N
2 (m/e 238), were found to be
identica
1 with norharman, harman, 1-isopentyl-β-carboline, and 1-(1-methyl-butyl)-β-carboline, respectively.
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