CAFFEOYL DERIVATIVES OF A SUGAR LACTONE AND ITS HYDROXY ACID FROM THE LEAVES OF BIDENS PILOSA

Article abstract of DOI:10.1016/0031-9422(92)83752-K

A new sugar lactone derivative, 3-O-caffeoyl-2-C-methyl-D-erythrono-1,4-lactone, and three new hydroxy acid derivatives, 2-O-caffeoyl-2-C-methyl-D-erythronic acid, methyl 2-O-caffeoyl-2-C-methyl-D-erythronic acid, and methyl 3-O-caffeoyl-2-C-methyl-D-erythronic acid were isolated from the leaves of Bidens pilosa.Their structures were elucidated on the basis of chemical and spectral evidence.Two methyl esters are thought to be artefacts.Key Word Index: Bidens pilosa; Compositae; sugar lactone; hydroxy acid; 2-C-methyl-D-erythronic acid; caffeic acid conjugates.