Three selectively labeled propynes were prepared either with deuterium or carbon-13 at position 3 and doubly labeled with carbon-13 at positions 1 and 2 by an alkylation reaction from the corresponding labeled or unlabeled monolithio acetylides and dimethylsulfates. Their lithiation with nBuLi gave
Synthesis and Spectroscopic Characterization of [5-13C]- and [6-13C]Ubiquinone-10 for Studies of Bacterial Photosynthetic Reaction Centers
✍ Scribed by Rutger B. Boers; Peter Gast; Arnold J. Hoff; Huub J. M. de Groot; Johan Lugtenburg
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 444 KB
- Volume
- 2002
- Category
- Article
- ISSN
- 1434-193X
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✦ Synopsis
This paper presents the synthesis and characterization by mass spectrometry and NMR spectroscopy of [2-13 C]-and [3-13 C]ubiquinone-0 and of [5-13 C]-and [6-13 C]ubiquinone-10. A scheme based on the synthetic approach to [5-13 C]ubiquinone-10 has been worked out for the synthesis of ubiquinones 13 C-labeled at any individual position and at every combination of positions in the quinone ring. The [5-13 C]and [6-13 C]ubiquinone-10 isotopomers were incorporated
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