Isoquinoline alkaloids: a 15N NMR and x-ray study. Part 2

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Authors

MAREK Radek MAREK Jaromír DOSTÁL Jiří TÁBORSKÁ Eva SLAVÍK Jiří DOMMISSE Roger

Year of publication 2002
Type Article in Periodical
Magazine / Source Magnetic Resonance in Chemistry
MU Faculty or unit

Faculty of Science

Citation
Web http://www3.interscience.wiley.com/cgi-bin/abstract/98518855/START
Field Organic chemistry
Keywords alkaloid; isoquinoline; 15N NMR; X-ray
Description Continuing our systematic 15N NMR study of isoquinoline alkaloids, we report a contribution extending our previous paper. The 15N NMR chemical shifts and 15N,1H long-range coupling pathways of tertiary and quaternary isoquinoline alkaloids of several constitutional types are presented. The selected compounds belong to the protoberberine, proaporphine, pavinane, rhoeadine and phtalideisoquinoline classes of alkaloids and were investigated by gradient-selected inverse-detected multiple bond correlation experiments (GHMBC and GSQMBC). In addition, x-ray data and the principal geometric parameters of stylopine, mecambridine, norchelerythrine, isothebaine and mecambrine are reported and discussed.
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