A new dihydrochalcone glycoside from the stems of Homalium stenophyllum

Abstract

A new dihydrochalcone glycoside, phloretin-4-O-β-D-glucopyranoside (1), together with seven known flavonoids (2–8), were isolated from the stems of Homalium stenophyllum. The structure of 1 was elucidated by extensive spectroscopic methods and the known compounds were identified by comparisons with data reported in the literature. The known compounds (2–8) were isolated from the genus Homalium for the first time. All compounds were evaluated for their antibacterial activities against six pathogenic bacteria in vitro.

Keywords:

• Homalium stenophyllum
• dihydrochalcone glycoside
• phloretin-4-O-β-D-glucopyranoside
• antibacterial activities