Antioxidative Constituents of Etlingera elatior

• DOI: 10.1021/np040098l
• Publication Date: 2005-08-16T16:38:30Z
• Authors: Habsah Mohamad; Nordin H. Lajis; Faridah Abas; Abdul Manaf Ali; Mohamad Aspollah ...; Hiroe Kikuzaki; Nobuji Nakatani
• Keywords: Zingiberaceae; Phytochemical; Diarylheptanoids

Phytochemical studies on the rhizomes of Etlingera elatior have resulted in isolation 1,7-bis(4-hydroxyphenyl)-2,4,6-heptatrienone (1), demethoxycurcumin (2), 1,7-bis(4-hydroxyphenyl)-1,4,6-heptatrien-3-one (3), 16-hydroxylabda-8(17),11,13-trien-15,16-olide (4), stigmast-4-en-3-one, stigmast-4-ene-3,6-dione, stigmast-4-en-6β-ol-3-one, and 5α,8α-epidioxyergosta-6,22-dien-3β-ol. Compounds 1 4 are new, their structures were elucidated by analysis spectroscopic data. Diarylheptanoids 1−3 found to inhibit lipid peroxidation a more potent manner than α-tocopherol.