5-Deoxy-7-methylbostrycoidin from Cultured Mycobionts from Haematomma Sp

An unusual alkaloid, the 2-aza-anthraquinone derivative, 5-deoxy-7-methyl bostrycoidin, was identified in the cultures of the spore-derived mycobionts of the lichen Haematomma sp., but not in the natural lichen thallus.