Sterols from Echinopsis oxygona (Link) zucc. ex Pfeiff

Rhanney L. Gonzales1,2, Chien-Chang Shen3 and Consolacion Y. Ragasa1,*

1Department of Chemistry, De La Salle University, 2401 Taft Avenue, Manila 1004, Philippines

2Department of Chemistry, Central Luzon State University, Science City of Munoz, Nueva Ecija, 3120 Philippines

3National Research Institute of Chinese Medicine, Ministry of Health and Welfare, 155-1, Li-Nong St., Sec. 2, Taipei 112, Taiwan

*Corresponding author: Tel: +63 2 5360230; E-mail: consolacion.ragasa@dlsu.edu.ph

Abstract

Echinopsis oxygona (Link) zucc. ex Pfeiff, commonly known as easter lily cactus and sea urchin cactus, is grown as an ornamental plant in the Philippines. Chemical investigation of the dichloromethane extracts of E. oxygona has led to the isolation of ostreasterol (1), ostreasteryl fatty acid esters (2) and ergosterol peroxide (3) from the flowers and a mixture of β-sitosterol (4) and stigmasterol (5) in about 2:1 ratio from the stems. Compounds 3-5 were reported to exhibit anticancer properties. This is the first report on the chemical constituents of E. oxygona.

Keywords

Echinopsis oxygona (Link) zucc. ex Pfeiff, Cactaceae, Ostreasterol, Ergosterol peroxide, β-Sitosterol, Stigmasterol.

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