title: A ceramide and cerebroside from the starfish asterias amurensis Lütken and their plant-growth promotion activities.
abstract: The new phytosphingosine-type ceramide asteriaceramide A (1) and glucocerebroside asteriacerebroside G (2), together with two known cerebrosides, asteriacerebrosides A and B, were isolated from lipophilic fractions of the whole bodies of the Northern Pacific starfish Asterias amurensis Lütken. The water-soluble fraction afforded two known asterosaponins, glycoside B(2) and asterosaponin-1. The structures of 1 and 2 were determined on the basis of chemical and spectroscopic evidence as (2S,3S,4R,13Z)-2-[(2'R)-2-hydroxyhexadecanoylamino]-13-docosene-1,3,4-triol (1) and 1-O-(beta-d-glucopyranosyl)-(2S,3R,4E,13Z)-2-[(2'R)-2-hydroxytetradecanoylamino]-4,13-docosadiene-1,3-diol (2). Compounds 1, 2, and asteriacerebrosides A and B promoted plant growth in sprouts of Brassica campestris.
authors.affiliation: Graduate School of Environmental Earth Science, Hokkaido University, Sapporo 060-0810, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Ishii
authors.forename: Tatsufumi
authors.initials: T
authors.lastname: Okino
authors.forename: Yosuke
authors.initials: Y
authors.lastname: Mino
mesh_terms: D000818:Animals; D001937:Brassica / Q000187:drug effects / Q000254:growth & development*; D002518:Ceramides / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D002554:Cerebrosides / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D006133:Growth Substances / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D015394:Molecular Structure; D010140:Pacific Ocean; D013110:Sphingosine / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D013215:Starfish / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D002518:Ceramides; D002554:Cerebrosides; D006133:Growth Substances; C513520:asteriaceramide A; C513522:asteriacerebroside G; D013110:Sphingosine