Complete assignments of the 1H and 13C NMR spectra of six highly functionalized neoclerodane diterpenoids
✍ Scribed by Benjamín Rodríguez
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 172 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.814
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
An NMR study of six highly functionalized neoclerodane diterpenes belonging to both A/B cis and trans series is described. In addition to 1D NMR methods, 2D shift‐correlated experiments [^1^H,^1^H‐COSY, ^1^H,^1^H‐TOCSY, ^1^H,^13^C‐gHSQC‐^1^J(C,H), ^1^H,^13^C‐gHMBC‐^n^J(C,H) (n = 2 and 3)] and 2D ^1^H,^1^H‐NOESY were used for the complete and unambiguous ^1^H and ^13^C chemical shift assignments of these structurally complex diterpenoids. Copyright © 2001 John Wiley & Sons, Ltd.
📜 SIMILAR VOLUMES
## Abstract An NMR study of five highly functionalized and rearranged abietane diterpenoids is described. In addition to 1D NMR methods, including 1D NOESY spectra, 2D shift‐correlated experiments [^1^H, ^13^C‐gHSQC‐^1^__J__ (C,H) and ^1^H, ^13^C‐gHMBC‐^__n__^__J__ (C,H) (__n__ = 2 and 3)] were use
## Abstract ^1^H and ^13^C NMR studies were carried out on benzanthrone and 3‐, 4‐, 6‐, 8‐, 9‐, 10‐ and 11‐chlorobenzanthrone. Complete assignments of proton and carbon resonances were made with the aid of HH‐COSY, NOESY, CH‐COSY and HMBC techniques. Substitution effects of a chlorine atom are not
## Abstract Unambiguous and complete assignments of ^1^H and ^13^C NMR chemical shifts for five clerodane diterpenes, four of them isolated from __Salvia splendens__ (salviarin, splendidin and splenolides A and B) and one obtained by acetylation of splenolide A, are presented. The assignments are b
## Abstract Unambiguous and complete assignments of ^1^H and ^13^C NMR chemical shifts for 14 19‐nor‐neoclerodane diterpenoids, nine of them isolated from natural sources and five other synthetic derivatives, are presented. The assignments are based on 2D shift‐correlated (^1^H,^1^H‐COSY, ^1^H,^13^