中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
9,10-蒽二酮,2,4,5,7-四甲氧基-1-(1-羰基丁基)- | 1-butyryl-2,4,5,7-tetramethoxy-anthraquinone | 15939-02-3 | C22H22O7 | 398.412 |
A review of the literature describing the pigments of the crinoids (phylum Echinodermata) reveals a prevalence of indicator-type pigments which are of unknown nature, except for certain polyhydroxy-meso- naphthodianthrones isolated from a fossilized Jurassic stalked crinoid. The highly coloured free-swimming crinoids, Comatula pectinata L. and C. cratera A. H. Clark, contain mixtures of indicator-type pigments which have been separated by adsorption chromatography on magnesium carbonate to yield three principal constituents, the 6-methyl and the 6,8-dimethyl ethers of rhodocomatulin, and a monomethyl ether of rubrocomatulin. The structure of the rhodocomatulin skeleton is shown to be 4-butyryl-1,3,6,8-tetrahydroxyanthraquinone rather than 2- butyryl-1,3,6,8-tetrahydroxyanthraquinone as previously suggested.1