Two new flavanone glycosides from Macrothelypteris torresiana (Gaud.) Ching

Abstract Two new flavanone glycosides 1 and 2 were isolated from the aerial parts of Macrothelypteris torresiana (Gaud.) Ching. The structures of two products were identified as (2 S )-5,7,2′,5′-tetrahydroxyflavanone-2′-O-β- d -6″-O-acetylglucopyranoside and (2 S )-5,7,2′,5′-tetrahydroxyflavanone-2′-O-β- d -glucopyranoside on the basis of their chemical and spectral analysis, respectively.