作者:Jeffrey J. Ares、Kenneth R. Wehmeyer
DOI:10.1002/jlcr.2580340707
日期:1994.7
The 13C6-labelled molecules, flavone and 5-methoxyflavone, with the carbon-13 label at all six carbons of the aromatic B ring, have been prepared for use as internal standards in isotope dilution-mass spectrometry. The key step involves addition of a labelled benzoyl group to the methyl group of a hydroxyacetophenone, forming a 1,3-diketone. Overall yields from 13C6-benzoic acid were 38% for the labelled flavone and 45% for the labelled 5-methoxyflavone.
13C6 标记的黄酮和 5-甲氧基黄酮分子在芳香族 B 环的所有六个碳原子上都有碳-13 标记,已被制备用作同位素稀释质谱分析的内部标准。关键步骤是将标记的苯甲酰基加到羟基苯乙酮的甲基上,形成 1,3-二酮。13C6-苯甲酸标记黄酮的总产率为 38%,标记 5-甲氧基黄酮的总产率为 45%。