title: Auxarthrol A and auxarthrol B: two new tetrahydoanthraquinones from Auxarthron umbrinum.
abstract: Two new 1,2,3,4-tetrahydroanthraquinones, auxarthrol A (compound 1) and auxarthrol B (2), along with three known pyrrolyloctatetraenyl-alpha-pyrone pigments, auxarconjugatin A (3), auxarconjugatin B (4) and rumbrin (5), were isolated from the fungus Auxarthron umbrinum. Structure elucidation of new compounds 1 and 2 was accomplished by spectroscopic data analysis while identification of the known pigments (3-5) was achieved by LC-MS-photodiode array detection.
authors.affiliation: Albany Molecular Research Inc, Bothell Research Center, 18804 North Creek Parkway, Bothell, WA 98011-8012, USA. khisal.alvi@albmolecular.com
authors.forename: Khisal A
authors.initials: KA
authors.lastname: Alvi
authors.forename: John
authors.initials: J
authors.lastname: Rabenstein
mesh_terms: D000880:Anthraquinones / Q000737:chemistry* / Q000378:metabolism*; D001709:Biotechnology; D005285:Fermentation; D005656:Fungal Proteins / Q000737:chemistry / Q000378:metabolism; D005658:Fungi / Q000378:metabolism*; D009682:Magnetic Resonance Spectroscopy; D010860:Pigments, Biological / Q000737:chemistry / Q000378:metabolism; D011753:Pyrones / Q000737:chemistry / Q000378:metabolism; D011758:Pyrroles / Q000737:chemistry / Q000378:metabolism
chemical_list: D000880:Anthraquinones; D005656:Fungal Proteins; D010860:Pigments, Biological; D011753:Pyrones; D011758:Pyrroles; C082417:rumbrin