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The University of Southampton
The NMR Spectroscopy FacilityCapabilities


Reserpine structure

Reserpine is an indole alkaloid found in Rauwolfia serpentina (Indian snakeroot).

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Data Collection

AVIIIHD500 FT-NMR spectrometer

5 mm SMART probe

HH COSY. The HH COSY shows the coupling network within the molecule.
TOCSY. The HH TOCSY spectrum shows correlations that belong together in contiguous spin systems.
1D Selective TOCSY. Selective TOCSY experiments can be used to "extract sub-spectra" that consist of isolated spin systems (Top: 1D sel-TOCSY from signal at 5.08 ppm; Lower: normal 1D 1H spectrum).
ROESY. The ROESY spectrum shows NOE (through space) interactions. The data should be considered in combination with the HH COSY spectrum to identify the signals caused by scalar coupling.
HSQC. In the HSQC spectrum the one-bond direct HC couplings can be viewed as cross-peaks between the proton and carbon projections; in the illustrated spectrum, DEPT editing has been applied.
In the HMBC spectrum the two- and three- bond couplings between protons and carbons can be seen as cross-peaks that correctly align with both projections; the cross-peaks that align correctly only with the carbon projection and are split around the proton signal are one-bond direct HC couplings.
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