Objective To study the chemical constituents of starfish Asterias rollestoni Bell.Methods The constituents were isolated by chromatography methods and identified by spectroscopic and chemical analyses.Results and Conclusion A novel compound was obtained and identified as(2S,3S,4R)-2-(13'-methyl-pentadecanoylamino)-nondecane-1,3,4-triol.The compound was reported first time and named as rollceramide A.