𝔖 Bobbio Scriptorium
✦   LIBER   ✦

C12 stereochemistry of α- and β-levantenolide carbon-13 NMR spectra of labdanolic diterpenes

✍ Scribed by AG González; CG Francisco; R Freire; R Hernández; JA Salazar; E Suárez


Book ID
104225633
Publisher
Elsevier Science
Year
1976
Tongue
French
Weight
109 KB
Volume
17
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis


From Turkish tobacco Giles and Schumacher 1. isolated the two diterpene lactones J-and CTlevantenolide, for which they proposed structures 1 and 2 respectively on the bases of chemical degradative work and spectral data.


📜 SIMILAR VOLUMES


Carbon-13 NMR spectra of kauranoid diter
✍ A. Patra; A. K. Mitra; S. R. Mitra; C. L. Kirtaniya; N. Adityachaudhury 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 English ⚖ 266 KB

## Abstract Carbon‐13 NMR spectra of a number of (−)‐__ent__‐kauranoids have been studied. An unambiguous selfconsistent assignment of resonances has been made by considering the changes in chemical shifts produced by the change of substituent(s).

Carbon-13 NMR spectra of taxane-type dit
✍ Anibal C. Rojas; Deanna De Marcano; Bernardo Méndez; Jeannette de Méndez 📂 Article 📅 1983 🏛 John Wiley and Sons 🌐 English ⚖ 315 KB

The 13CNMR spectra of a series of nine taxane derivatives are reported. A detailed analysis of the assignments is presented. Observed long-range substituent effects are explained on the basis of the proximity of rings A and C in this type of molecules.

Total assignment of 1H and 13C NMR spect
✍ P. Ciuffreda; P. Ferraboschi; E. Verza; A. Manzocchi 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 82 KB

## Abstract The complete ^1^H and ^13^C chemical shift assignments of the 13α‐epimer of estrone methyl ether and of estrone methyl ether itself were carried out, making use of one‐ and two‐dimensional NMR techniques (1D HOHAHA, COSY, NOESY, TOCSY and HSQC). Copyright © 2001 John Wiley & Sons, Ltd.