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EB

EB

ONLINE

Cham : Springer International Publishing : Imprint: Springer, 2017

1 online zdroj

ISBN 978-3-319-49712-9 (e-kniha)

ISBN 9783319497112 (print)

Progress in the Chemistry of Organic Natural Products, ISSN 2191-7043 ; 105

Printed edition: ISBN 9783319497112

Xanthine Alkaloids: occurrence, biosynthesis, and function in plants -- The Iboga Alkaloids -- A critical evaluation of the quality of published 13C-NMR-Data in natural product chemistry.

The first contribution reviews the occurrence of xanthine alkaloids in the plant kingdom and the elucidation of the caffeine biosynthesis pathway, providing details of the N-methyltransferases, belonging to the motif B’ methyltransferase family which catalyze three steps in the four step pathway leading from xanthosine to caffeine. The second contribution in this book provides a background on the molecule and related compounds and update knowledge on the most recent advances in Iboga alkaloids. The third contribution presents a comprehensive analysis of frequently occurring errors with respect to 13C NMR spectroscopic data and proposes a straightforward protocol to eliminate a high percentage of the most obvious errors..

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