SEČKÁŘOVÁ, Pavlína, Radek MAREK, Jiří DOSTÁL, Roger DOMMISSE and Eddy L. ESMANS. Structural studies of benzophenanthridine alkaloid free bases by NMR spectroscopy. Magnetic Resonance in Chemistry. John Wiley & Sons, Ltd., 2002, vol. 40, No 2, p. 147-152. ISSN 0749-1581.
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Basic information
Original name Structural studies of benzophenanthridine alkaloid free bases by NMR spectroscopy
Name in Czech Structural studies of benzophenanthridine alkaloid free bases by NMR spectroscopy
Authors SEČKÁŘOVÁ, Pavlína (203 Czech Republic), Radek MAREK (203 Czech Republic, guarantor), Jiří DOSTÁL (203 Czech Republic), Roger DOMMISSE (56 Belgium) and Eddy L. ESMANS (56 Belgium).
Edition Magnetic Resonance in Chemistry, John Wiley & Sons, Ltd. 2002, 0749-1581.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10401 Organic chemistry
Country of publisher United Kingdom of Great Britain and Northern Ireland
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 0.994
RIV identification code RIV/00216224:14310/02:00005245
Organization unit Faculty of Science
UT WoS 000173435300007
Keywords in English NMR; 1H NMR; 13C NMR; benzophenanthridine alkaloids; free base formation; GHMBC; GSQMBC; pseudobases
Tags 13C NMR, 1H NMR, Benzophenanthridine Alkaloids, free base formation, GHMBC, GSQMBC, NMR, pseudobases
Tags International impact, Reviewed
Changed by Changed by: doc. RNDr. Jiří Dostál, CSc., učo 1309. Changed: 25/6/2009 06:31.
Abstract
The free bases of eight quaternary benzo[c]phenanthridine alkaloids were investigated by 1H and 13C NMR spectroscopy. The pseudobases (the 6-hydroxy-5,6-dihydro derivatives) were found to be the only products of the alkalization in DMSO-d6 solution. In less polar solvents the formation of the bimolecular aminoacetal structure is preferred. In biological systems, free bases of the alkaloids are assumed to adopt the pseudobase structure.
Abstract (in Czech)
The free bases of eight quaternary benzo[c]phenanthridine alkaloids were investigated by 1H and 13C NMR spectroscopy. The pseudobases (the 6-hydroxy-5,6-dihydro derivatives) were found to be the only products of the alkalization in DMSO-d6 solution. In less polar solvents the formation of the bimolecular aminoacetal structure is preferred. In biological systems, free bases of the alkaloids are assumed to adopt the pseudobase structure.
Links
LN00A016, research and development projectName: BIOMOLEKULÁRNÍ CENTRUM
Investor: Ministry of Education, Youth and Sports of the CR, Biomolecular Center
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