3,4-DIHYDRO-2H,5H-PYRANO[3,2-c]CHROMENE AND BENZOPHENONE DERIVATIVES FROM CULTURED LICHEN MYCOBIONTS OF VIETNAMESE GRAPHIS SP

• Published in: Heterocycles Vol. 87; no. 12; pp. 2651 - 2657
• Main Authors: Takenaka, Yukiko, Taguchi, Shota, Duy Hoang Le, Hamada, Nobuo, Tanahashi, Takao
• Format: Journal Article
• Language: English
• Published: OXFORD Elsevier 2013
• Subjects: Chemistry; Chemistry, Organic; Physical Sciences; Science & Technology; SECONDARY METABOLITES; Graphis; 3,4-Dihydro-2H,5H-pyrano[3,2-c]chromene; Isolated Mycobiont; SCRIPTA; Lichen; Benzophenone

Spore-derived mycobionts of the lichen Graphis sp. collected in Vietnam were cultivated on a malt-yeast extract medium supplemented with 10% sucrose and their metabolites were investigated. Two new phenolic compounds 2 and 3 were isolated along with proserin A (1). Their structures were determined b...