## Abstract The NMR spectra of a spiro oxirane (**1**) derivative of codeinone, codeine (**2**), isocodeine (**3**), 6‐methylcodeine (**4**) and 6‐methylisocodeine (**5**) were compared. NOE and double‐resonance experiments were used to confirm the conformation of **1**, and the configuration about
The nuclear magnetic resonance spectra of cyclopropane derivatives
✍ Scribed by Tatsuya Shono; Takeshi Morikawa; Akira Oku; Ryohei Oda
- Publisher
- Elsevier Science
- Year
- 1964
- Tongue
- French
- Weight
- 140 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract The ^13^C chemical shift data of a series of ketone, alcohol and ester derivatives of D‐homoandrostane are reported. Homologation effects are discussed, as well as substituent effects on the homologated structures.
## Abstract ^13^C NMR spectra of several hydroxy diterpene derivatives having a pimarane, isopimarane and (13S, 8α)rosane skeleton have been recorded. The most significant effects caused by the introduction of hydroxyl groups in such a skeleton are demonstrated. The magnitudes of the γ‐ and δ‐effec
## Abstract Nitrogen‐15 NMR spectra of 11 ketenimines have been taken both at the natural‐abundance level of ^15^N and with the aid of ^15^N‐labeling. The nitrogen chemical shifts are substantially different from those of neutral imines and are upfield, more like those of protonated imines. The res