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Occurrence and chirality of oscillaxanthin |
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| Authors: | Harald Rønneberg Per Foss Thomas Ramdahl Gunner Borch Olav M. Skulberg Synnøve Liaaen-Jensen |
| Affiliation: | 1. Organic Chemistry Laboratories, Norwegian Institute of Technology, University of Trondheim, N-7034 Trondheim-NTH, Norway;2. Chemistry Department A, The Technical University of Denmark, DK-2800 Lyngby, Denmark;3. Norwegian Institute for Water Research, Blindern, N Oslo 3, Norway |
| Abstract: | The quantitative carotenoid composition of natural blooms of Oscillatoria rubescens and O. agardhii is reported and compared with previous isolations. Chemical or enzymatic conversion of oscillaxanthin to the chiral aglycone failed. CD-correlation of oscillaxanthin hexaacetate with (2S,2′S)-bacterioruberin, (2′R)-plectaniaxanthin and (2′R)-plectaniaxanthin-2′-β-D-glucoside tetraacetate support the 2R,2′R-configuration for oscillaxanthin. |
| Keywords: | Cyanophyceae carotenoid composition oscillaxanthin chirality CD correlation biological context. |
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