## Abstract The carbon‐13 n.m.r. spectra of three isomers of 4b, 5,6,7,8,8a,10,11,16,16b‐decahydrodibenz[__f__,__h__]indolo[2,3‐__a__]quinolizine were interpreted with the aid of the 1,2,3,4,4a,5,6,10b‐octahydro‐6‐phenylphenanthridines and the 2‐phenylcylohexylamines. The configuration and the conf
Benzo- and Indoloquinolizines XIV The Conformational Equilibrium in the Rel-(4bα, 8aα, 15bα)- 4b, 5, 6, 7, 8, 8a, 10, 11-Octahydro-15bH-Isoquino [2, 1-f] Phenanthridine Isomer
✍ Scribed by D. Tourwé; L. Vandersteen; G. van Binst
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 2010
- Weight
- 155 KB
- Volume
- 86
- Category
- Article
- ISSN
- 0037-9646
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## Abstract The synthesis of a D/E __cis__ isomer of the title compound is described. In an attempt to obtain the other D/E __cis__ isomer, epimerisation reactions were studied. The configuration and conformation of the isomers are determined on the basis of their ^1^H NMR spectra. The shift of the
## Abstract The influence of the configuration and the conformation on the ^13^C n.m.r. spectrum of 1,2,3,4,4a,6,7,8,9,13b‐decahydro‐9a__H__‐pyrido[1,2‐__f__] phenanthridine was investigated. These observations, coupled with the low temperature spectrum allowed us to confirm the __trans__‐__syn__‐_
## Abstract The preferred conformations of the four isomers of 1,2,3,4,4a,6,7,8,9,13b‐decahydro‐9a__H__‐pyrido[1,2‐__f__] phenanthridine have been determined by 270 MHz ^1^H n.m.r. and i.r. spectroscopy. N.m.r. assignments are based on the specific chemical shifts of the protons adjacent to the nit