Nirurin: a New Prenylated Flavanone Glycoside From Phyllanthus nirurii

Abstract

A new prenylated flavanone glycoside, nirurin was isolated from P. nirurii. On the basis of chemical and spectral studies, its structure is proposed as 5,6,7,4''-tetrahydroxy-8-(3-methylbut-2-enyl)flavanone 5-O-rutinoside. The aglycone, also a new flavanone, was characterized as 5,6,7,4''-tetrahydroxy-8-(3-methylbut-2-enyl)flavanone, which may be designated as nirurinetin.