𝔖 Bobbio Scriptorium
✦   LIBER   ✦

13C NMR studies of some complex natural oxygen heterocycles. V—13C NMR spectra of furanoflavones

✍ Scribed by S. C. Gupta; F. P. Singh; I. B. Cook; B. Ternai


Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
268 KB
Volume
20
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

^13^C NMR spectra for a number of furanoflavones are presented and analysed. The effects of various substituents are discussed.


📜 SIMILAR VOLUMES


NMR studies in the heterocyclic series x
✍ Mikael Begtrup; José Elguero; Enrique Díez-Barra; Carmen Pardo 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 314 KB

Chemical shifts and coupling constants are reported for seven azole derivatives (iidamles, triazoles and their b e m derivatives), their quaternary salts and the corresponding dicyanomethylides. The assignment of the heterocyclic carbons is based on couplings with the N-methyl group. Compared with n

13C NMR spectra of natural products. 1—g
✍ Antonio J. R. Da Silva; Marcos Garcia; Paul M. Baker; Jaime A. Rabi 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 403 KB

## Abstract The ^13^C NMR spectra of 18 guaianolides have been measured and the chemical shifts assigned. The compounds investigated include the naturally occurring eremanthin (1), dehydrocostus lactone, eregoyazin, eregoyazidin and other semisynthetic lactones derived from 1. Qualitative analysis

13C NMR spectra of natural products. 2—e
✍ Antonio J. R. da Silva; Marcos Garcia; Paul M. Baker; Jaime A. Rabi 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 138 KB

## Abstract The ^13^C NMR spectra of eight eudesmanolides have been measured and the chemical shifts assigned. Among the compounds studied are the naturally occurring α‐cyclocostunolide, santamarin, arbsculin A and reynosin.

13C NMR spectra of some 4-substituted pr
✍ S. E. Morgan; D. M. Rackham 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 274 KB 👁 1 views

## Abstract The ^13^C NMR spectra of some mono‐ and geminal disubstituted protoadamantanes have been assigned with the aid of shift reagents.