Depsidone synthesis. Part 15. New metabolites of the lichen Buellia canescens(Dicks.) De Not: novel phthalide catabolites of depsidones
作者:Tony Sala、Melvyn V. Sargent、John A. Elix
DOI:10.1039/p19810000849
日期:——
The isolation, from the lichen Buellia canescens(Dicks.) De Not., and structural determination of the new depsidones 2,7,9-trichloro-3-hydroxy-8-methoxy-1,6-dimethyldibenzo[b,e][1,4]dioxepin-11-one (dechlorodiploicin)(1) and its methyl ether dechloro-O-methyldiploicin (9), together with the novel phthalides 4-chloro-7-(3,5-dichloro-4,6-dimethoxy-2-methylphenoxy)-5-methoxyisobenzofuran-1(3H)-one (buellolide)(13)
从地衣中分离出地衣(Dicks。De Not。),并确定新的双孢菌烯酮2,7,9-三氯-3-羟基-8-甲氧基-1,6-二甲基二苯并[ b,e ] [ 1,4] dioxepin-11-one(dechlorodiploicin)(1)及其甲基醚dechloro- O- methyldiploicin(9),以及新型邻苯二甲酸酯4-chloro-7-(3,5-dichloro-4,6-二甲氧基-2-甲基苯氧基)-5-甲氧基异苯并呋喃-1(3 H)-一(丁酰内酯)(13)和4,6-二氯-7-(2,4-二氯-3,6-二甲氧基-5-甲基苯氧基) -5-甲氧基异苯并呋喃-1(3 H)-描述了一种(蔗糖固体)(18)。还描述了buellolide(13)的合成。据推测,buellolide(13)和canesolide(18)是由它们的同属二十头孢烯的分解代谢产生的,在后者情况下是Smiles重排的。