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Abstract
Conamomum rubidum is a species of Conamomum genus, Zingiberaceae family. Due to the novelty, specificity and narrow distribution area, the knowledge about phytochemistry of Conamomum genus and Conamomum rubidum are rather poor. Thus, the efficient investigation process required. In this study, five compounds including three steroids, (22E, 24R)-ergosta-4,6,8(14),22-tetraen-3-one, beta-sitosterol, stigmast-4-ene-3-one together with 1-tetratriacontanol và palmitic acid were isolated from n-hexane extract of the whole plant of Conamomum rubidum collected from Lam Dong Province, Viet Nam. The compounds were isolated and purified by column chromatography and thin layer chromatography. Their structures were determined by a combination of spectroscopic analyses, including 1D- and 2D-NMR, chemical transformation, GC-MS and by comparison with the reported data in the literature. This result will be a good premise for further studies on the phytochemistry of Conamomum rubidum, thereby contributing to enrich the data on medicinal plants of our country.