## Abstract The complete ^1^H and ^13^C NMR assignment of 9 acetamidochalcones, 18 acetamidoflavones, 18 aminoflavones, 9 acetamidoflavonols and 9 aminoflavonols has been performed using one‐ and two‐dimensional NMR techniques including COSY, HMQC and HMBC experiments. Copyright © 2010 John Wiley &
Synthesis and complete assignment of the 1H and 13C NMR signals of some oxopyrancoumarin and oxofuropyrancoumarin derivatives
✍ Scribed by Elías Quezada; Giovanna Delogu; Dolores Viña; Lourdes Santana; Carmen Picciau; Gianni Podda; Eugenio Uriarte
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 111 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.2223
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✦ Synopsis
Abstract
The synthesis of four pyranocoumarins starting from phloroglucinol and the complete ^1^H and ^13^C NMR assignment of seven pyranocoumarins has been performed using 1D and 2D NMR techniques including COSY, HMQC and HMBC experiments. Copyright © 2008 John Wiley & Sons, Ltd.
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Nine flavonol derivatives were studied. Previously reported NMR data of three of these derivatives were corrected. We report complete assignments of the NMR data for six flavonol derivatives not previously studied.
## Abstract The complete analyses of the ^1^H and ^13^C NMR spectra of the __ortho__ ester analogues of etoposide are reported and differentiation of the α and β isomers of these derivatives is suggested by using the γ‐__gauche__ effect upon the ^13^C chemical shift. Copyright © 2003 John Wiley & S