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Short Paper | Regular issue | Vol 87, No. 9, 2013, pp.1897-1902
Published online, 25th July, 2013
DOI: 10.3987/COM-13-12768
■ NAPHTHOQUINONES AND PHENALENONE DERIVATIVES FROM THE CULTURED LICHEN MYCOBIONTS OF TRYPETHELIUM SP.

Yukiko Takenaka, Yuki Naito, Duy Hoang Le, Nobuo Hamada, and Takao Tanahashi*

*Kobe Pharmaceutical University, 4-19-1 Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan

Abstract

Abstract – Spore-derived mycobionts of the crustose lichen Trypethelium sp. collected in Vietnam were cultivated on a malt-yeast extract medium supplemented with 10% sucrose. The investigation of their metabolites resulted in isolation of a new naphthoquinone and a new phenalenone derivative, together with (+)-trypethelone methyl ether and (+)-sclerodin. Their structures were determined by spectroscopic methods.