Research Article | Volume: 5, Issue: 9, September, 2015

Chemical constituents of Cycas aenigma

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

Open Access   

Published:  Sep 27, 2015

DOI: 10.7324/JAPS.2015.50906

Chemical investigation of Cycas aenigma, a plant endemic to the Philippines, led to the isolation of a rare neolignan, 2-[2-hydroxy-5-(3-hydroxypropyl)-3-methoxyphenyl]-1-(4-hydroxy-3-methoxyphenyl)propane-1,3-diol (1), pinoresinol (2), and fatty alcohols (3) from the leaflets; and triglycerols (4), and a mixture of β-sitosterol (5a) and stigmasterol (5b) from the petiole and rachis. The structure of 1 was elucidated by extensive 1D and 2D NMR spectroscopy, while those of 2-5b were identified by comparison of their 1H and/or 13C NMR data with literature data.

Keyword:     Cycas lacrimans Cycadaceae pinoresinol fatty alcohols triacylglycerolsβ-sitosterol


Vincent Antonio Ng, Esperanza Maribel Agoo, Chien-Chang Shen, Consolacion Y. Ragasa. Chemical constituents of Cycas aenigma. J App Pharm Sci, 2015; 5 (09): 032-036.

Copyright:The Author(s). This is an open access article distributed under the Creative Commons Attribution Non-Commercial License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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