title: Marianins A and B, prenylated phenylpropanoids from Mariannaea camptospora.
abstract: Marianins A (1) and B (2), two new prenylated phenylpropanoids, were isolated from the culture extract of the fungus Mariannaea camptospora. Structures of marianins were elucidated by interpretation of NMR and other spectroscopic data. 1 is a 5-methylcoumarin bearing two prenyloxy groups, while 2 is an orcinol derivative substituted with a 3,3-dimethyl-4-pentenoyl chain. 2 is possibly derived from 1 through a Claisen rearrangement of the prenyl group, followed by lactone hydrolysis and decarboxylation. These compounds showed weak antibacterial activity against Micrococcus luteus.
authors.affiliation: Biotechnology Research Center, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan.
authors.forename: Takao
authors.initials: T
authors.lastname: Fukuda
authors.forename: Yuri
authors.initials: Y
authors.lastname: Sudoh
authors.forename: Yuki
authors.initials: Y
authors.lastname: Tsuchiya
authors.forename: Toru
authors.initials: T
authors.lastname: Okuda
authors.forename: Fumihiro
authors.initials: F
authors.lastname: Fujimori
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Igarashi
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D006999:Hypocreales / Q000737:chemistry*; D008826:Microbial Sensitivity Tests; D016982:Micrococcus luteus / Q000187:drug effects*; D010666:Phenylpropionates / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D054876:Prenylation
chemical_list: D000900:Anti-Bacterial Agents; D010666:Phenylpropionates; C560284:marianin A; C560283:marianin B