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J App Pharm Sci. 2015; 5(Supplement 1): 012-017


Chemical Constituents of Cycas sancti-lasallei

Vincent Antonio S. Ng, Esperanza Maribel G. Agoo, Chien-Chang Shen, Consolacion Y. Ragasa.

Abstract
Chemical investigation of the dichloromethane extracts of Cycas sancti-lasallei, a plant endemic to the Philippines, led to the isolation of squalene (1), β-sitosterol (2a), stigmasterol (2b), and triglycerides (3) from the sarcotesta; 2a, 2b, 3,and phytyl fatty acid esters (4) from the endotesta; 2a, 2b, 3,and β-sitosteryl fatty acid esters (5) from the sclerotesta; and 3 and 5 from the bark. The structures of 1-5 were identified by comparison of their 1H NMR and/or 13C NMR data with those reported in the literature.

Key words: Cycas sancti-lasallei, Cycadaceae, squalene, β-sitosterol, stigmasterol, triglycerides, phytyl fatty acid esters, β-sitosteryl fatty acid esters



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