| MAIER, Lukáš, Tomáš ŠOLOMEK, Matej PIPÍŠKA, Zdeněk KŘÍŽ, Marek NEČAS a Radek MAREK. Structural study of 8-azole derivatives of protoberberine alkaloids: experimental and quantum chemical approach. Tetrahedron. Oxford, England: Pergamon - Elsevier Science, roč. 66, č. 47, s. 9277-9285. ISSN 0040-4020. 2010. |
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@article{902419,
author = {Maier, Lukáš and Šolomek, Tomáš and Pipíška, Matej and Kříž, Zdeněk and Nečas, Marek and Marek, Radek},
article_location = {Oxford, England},
article_number = {47},
keywords = {Barrier to rotation; Berberine; Low-temperature NMR spectroscopy; Nucleus-independent chemical shift; Palmatine; Theoretical calculations},
language = {eng},
issn = {0040-4020},
journal = {Tetrahedron},
title = {Structural study of 8-azole derivatives of protoberberine alkaloids: experimental and quantum chemical approach},
url = {http://dx.doi.org/10.1016/j.tet.2010.09.030},
volume = {66},
year = {2010}
}
TY - JOUR
ID - 902419
AU - Maier, Lukáš - Šolomek, Tomáš - Pipíška, Matej - Kříž, Zdeněk - Nečas, Marek - Marek, Radek
PY - 2010
TI - Structural study of 8-azole derivatives of protoberberine alkaloids: experimental and quantum chemical approach
JF - Tetrahedron
VL - 66
IS - 47
SP - 9277-9285
EP - 9277-9285
PB - Pergamon - Elsevier Science
SN - 00404020
KW - Barrier to rotation
KW - Berberine
KW - Low-temperature NMR spectroscopy
KW - Nucleus-independent chemical shift
KW - Palmatine
KW - Theoretical calculations
UR - http://dx.doi.org/10.1016/j.tet.2010.09.030
N2 - New derivatives of protoberberine alkaloids were prepared by nucleophilic addition of some azoles to the iminium functionality of the quaternary protoberberine alkaloids. Compounds were structurally characterized mainly by 1H and 13C NMR spectroscopy. Additionally, conformational behaviors of selected derivatives varying in bulkiness of the azole moiety have been investigated by low temperature NMR spectroscopy and quantum chemical calculations. Ring current effects of pyrrole and carbazole moieties on selected 1H NMR resonances have been characterized, visualized, and discussed.
ER -
MAIER, Lukáš, Tomáš ŠOLOMEK, Matej PIPÍŠKA, Zdeněk KŘÍŽ, Marek NEČAS a Radek MAREK. Structural study of 8-azole derivatives of protoberberine alkaloids: experimental and quantum chemical approach. \textit{Tetrahedron}. Oxford, England: Pergamon - Elsevier Science, roč.~66, č.~47, s.~9277-9285. ISSN~0040-4020. 2010.
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