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A 14-membered macrolide and isocoumarin derivatives from the cultured lichen mycobionts of Graphis vestitoides.

Reputable Mentor II
Reputable Mentor II
Le DH, Takenaka Y, Hamada N, Miyawaki H, Tanahashi T.
Chem Pharm Bull (Tokyo). 2013;61(3):358-62. Epub 2012 Dec 20.
Spore-derived mycobionts of the crustose lichen Graphis vestitoides 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 novel 14-membered macrolide and a new isocoumarin, together with five known isocoumarin derivatives. Their structures were determined by spectroscopic and chemical means. This is the first instance of isolation of a 14-membered macrolide from a lichen mycobiont.
Kobe Pharmaceutical University
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