1967
DOI: 10.1071/ch9670541
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Pigments of marine animals. VI. Anthraquinoid pigments of the crinoids Ptilometra australis Wilton and Tropiometra afra Hartlaub

Abstract: The crinoid Ptilometra australis Wilton yields to organic solvents a complex mixture of pigments from which the three principal components have been separated by chromatography on magnesium carbonate. These substances have been shown by spectral and chemical examination to be 1,6,8-trihydroxy-3-(1-hydroxypropyl). anthraquinone, 1,6,8-trihydroxy- 3-(2-hydroxypropyl)anthraquinone, and 1,6,8-trihydroxy-3- propylanthraquinone-2-carboxylic acid. The distinct types of crinoidal pigments isolated from Comatula specie… Show more

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Cited by 27 publications
(27 citation statements)
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“…aMeasured in CD 3 OD, referenced to internal solvent signals (δ 3.31 and 49.0 ppm).bMeasured in DMSO d 6 , referenced to internal solvent signals (δ2.50).cMeasured in (CD 3 ) 2 CO, referenced to TMS (δ0).dNMR resonances and coupling constants associated with atoms at these positions are not consistent with the current molecule and the previously reported rhodoptilometrin [10] being identical.8–10Data comes from references [8–10], see main text.…”
Section: Figurementioning
confidence: 77%
See 1 more Smart Citation
“…aMeasured in CD 3 OD, referenced to internal solvent signals (δ 3.31 and 49.0 ppm).bMeasured in DMSO d 6 , referenced to internal solvent signals (δ2.50).cMeasured in (CD 3 ) 2 CO, referenced to TMS (δ0).dNMR resonances and coupling constants associated with atoms at these positions are not consistent with the current molecule and the previously reported rhodoptilometrin [10] being identical.8–10Data comes from references [8–10], see main text.…”
Section: Figurementioning
confidence: 77%
“…Crinoids are known producers of brightly coloured, typically orange red pigments that are predominantly anthraquinoid in nature. The NMR data for these compounds are difficult to assign and as a result are often incorrectly assigned [ 8 – 10 ]. NMR techniques that are not routinely used need to be applied to resolve assignment issues for this class of compounds [ 11 ].…”
Section: Introductionmentioning
confidence: 99%
“…Crinemodin ( 6 ), a well-known anthraquinone metabolite that has been isolated from several echinoderm species, was also identified from the P. venusta extract, and its spectroscopic data closely matched the reported literature values. 14…”
Section: Resultsmentioning
confidence: 99%
“…Therefore, marine organisms hold great potential for the development of future drugs. The marine natural compound rhodoptilometrin is an anthraquinone that was extracted and purified from Himerometra magnipinna in 1967 [33]. In a previous study conducted in 2009, Wright et al employed nuclear magnetic resonance (NMR) to prove that rhodoptilometrin exists as two stereoisomers ( S - or R -configuration) [34].…”
Section: Introductionmentioning
confidence: 99%