Synthese von Moosinhaltsstoffen. 8. Sphagnumsäure und ihre Abbauprodukte

Syntheses of Bryophyte Constituents. 8. Sphagnum Acid and its Degradation Products For Sphagnum acid ( 1 ) and its enzymatic degradation product 5-hydroxy-4-(4-hydroxyphenyl)-5H-furan-2-on ( 2 ) efficient syntheses on preparative scale were developed. For the (4-hydroxyphenyl)butenolide 2 some characteristic chemical transformations are observed in acidic and basic medium.