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13C- and 1H-NMR. Assignments for colchicine derivatives

✍ Scribed by Charles D. Hufford; Hans-Georg Capraro; Arnold Brossi

Publisher
John Wiley and Sons
Year
1980
Tongue
German
Weight
412 KB
Volume
63
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

The ^13^C‐NMR. spectra of a number of colchicine derivatives are given comprising examples of the normal series (4→10), iso series (11→16) and colchicine series (17), which were either reported in the literature or obtained by partial synthesis or degradation reactions. The ^13^C‐NMR. assignments were made by comparisons with known compounds and selective single‐frequency offresonance decoupling experiments. Selective proton decoupling experiments have also allowed assignments of the H—C(11) and H—C(12) protons of the iso and colchicine series.

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