Assignments are provided for the protons and directly bonded carbons of 3-and 8-episirohydrochlorin methyl esters based upon material isolated from Desulfovibrio vulgaris . The chemical shifts of the two isomers are highly similar to each other and also to the physiologically relevant authentic siro
13C and 1H NMR Assignments for (1R)-3β- Phenyl-8-methyl-8-azabicyclo[3.2.1]octane- 2β-carboxylic Acid Methyl Ester
✍ Scribed by Andrej Petrič
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 186 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
The carbon and proton spectra of the title compound were completely assigned on the basis of COSY, HETCOR, DEPT and selective single-frequency decoupling experiments. The validity of the proton-proton coupling constants determination was checked by computer simulation.
📜 SIMILAR VOLUMES
## Abstract The 1,3‐dipolar addition reaction of acrylonitrile to the betaine 1‐phenyl or methyl‐3‐oxidopyridinium is not so highly regioselective as generally assumed. New regioisomers are isolated. Their structures are proven by mass spectroscopy and proton‐and carbon‐NMR spectroscopy. Some 3,4di
The current substantial interest concerning the structure elucidation of new active natural products led to the complete 1H and 13C chemical shift assignment of a triterpenoid derivative, methyl 2a,3b,24-tri-Oacetylolean-12a-chloro-28,13b-olide, obtained after acetylation and methylation of a mixtur
The stereochemistry of bicyclic oxazepane-type intermediates for the synthesis of hydroxylated tropane alkaloids was determined by 1H NMR spectroscopy. Thermolysis of the 3a-tert-butyldimethylsiloxy-8-methyl-8azabicyclo [ 3.2.1 ] oct-6-ene axial N-oxide diastereomer (1) in butyronitrile a †orded the