Strukurell neuartige 4-phenyl-benzopyran-2-one aus pityrogramma calomelanos (L.) link

Autor: Dervilla M.X. Donnelly, Volker H. Dietz, Otto Seligmann, Mary J. Meegan, Mohan V. Chari, Hildebert Wagner, Eckhard Wollenweber, Brandan O'Donnell
Rok vydání: 1979
Předmět:
Zdroj: Tetrahedron Letters. 20:4269-4272
ISSN: 0040-4039
Popis: From the fern Pityrogramma calomelanos a new Pigment has been isolated and structurally elucidated as a 8- or 6-dihydrocinnamoyl-5,7-dihydroxy-4-phenyl-2H-1-benzopyran-2-one mainly by spectroscopic methods and by comparison with the synthesized monomethyl derivative. From the same plant two other Phenyl-benzopyran-2-one-derivatives with an additional 2-phenyl-γ-pyron (ol)-ring system could be isolated.
Databáze: OpenAIRE