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Selective INEPT, a new technique for the 13C NMR assignment of methylene carbons with non-equivalent protons, and its application to the analysis of the 13C NMR spectrum of monensin

✍ Scribed by Kazuo Furihata; Haruo Seto; Muneki Ohuchi; Noboru Otake

Publisher
John Wiley and Sons
Year
1983
Tongue
English
Weight
365 KB
Volume
21
Category
Article
ISSN
0749-1581

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Application of principal component analy
Application of principal component analysis to 13C NMR shifts of chalcones and their thiophene and furan analogues: A useful tool for the shift assignment and for the study of substituent effects
✍ Giuseppe Musumarra; Svante Wold; Salo Gronowitz 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 461 KB

## Abstract ^13^C NMR shifts of 54 chalcones and their thiophene and furan analogues are analyzed by principal component analysis. Thus, a mathematical model is derived for the variation of the carbon shifts in each of seven classes. Two component models are found to be adequate by cross‐validation