摘要：From Xanthoria fallax (HEPP.) ARN. three anthraquinone pigments, parietin, fallacinal, m.p.251∼252°, and fallacinol, m.p.236-237°, were isolated. Fallacin reported by Asano et al. was proved to be a mixture of fallacinal and fallacinol. The structures of fallacinal and fallacinol were synthetically established as being 2-aldehydoand 2-hydroxymethyl-4, 5-dihydroxy-7-methoxyanthraquinones, respectively.
