Sulfoquinovosyl diacylglycerols from the alga Heterosigma carterae.
An extract of the chloromonad Heterosigma carterae (Raphidophyceae), cultivated in natural seawater, contained a complex mixture of sulfoquinovosyl diacylglycerols. Palmitoyl (16:0), three isomers of hexadecenoyl (16:1 cis delta 9, delta 11, delta 13), and eicosapentenoyl (20:5) were found to be the main fatty acyl substituents. Exact double-bond sites were determined by mass spectrometry analysis of the corresponding nicotinyl derivatives. Four major sulfoquinovosyl diacylglycerol components were partially purified and identified as 1-4 by interpretation of their nuclear magnetic resonance and mass spectral data. In addition, complete analysis of the H. carterae sulfoquinovosyl diacylglycerols was performed using high-performance liquid chromatography combined with electrospray tandem mass spectrometry.
Keusgen
M
M
Institute for Marine Biosciences, National Research Council of Canada, Halifax, Nova Scotia, Canada.
Curtis
J M
JM
Thibault
P
P
Walter
J A
JA
Windust
A
A
Ayer
S W
SW
D004075:Diglycerides / Q000032:analysis* / Q000737:chemistry; D056890:Eukaryota / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry / Q000379:methods; D015394:Molecular Structure
D004075:Diglycerides