Dihydrocarbazole alkaloids from Aspergillus tubingensis.

Investigation of the fungus Aspergillus tubingensis has led to the isolation and identification of two dihydrocarbazole-containing compounds (1 and 2). Details of the purification and structure elucidation of 1 and 2 are described. This is the first known report of dihydrocarbazole-containing compounds to be isolated from a living system.