New phenylalkanoids from Zingiber officinale

Abstract

Two new phenylalkanoids, 3-hydroxy-1-(4′-hydroxy-3′-methoxy- phenyl)-hexan-5-one (1) and 3-hydroxy-1-(3′,5′-dimethoxy-4′- hydroxyphenyl)-hexan-5-one (2) were isolated from the rhizomes of Chinese ginger (Zingiber officinale Roscoe (Zingiberaceae)). The structures of two new phenylalkanoids were elucidated by chemical and physical evidence.