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Pregled bibliografske jedinice broj: 143117

Časopis

Autori: Wittine, Karlo; Gazivoda, Tatjana; Markuš, Marko; Mrvoš-Sermek, Draginja; Hergold-Brundić, Antonija; Cetina, Mario; Žiher, Dinko; Gabelica, Vesna; Mintas, Mladen; Raić-Malić, Silvana
Naslov: Crystal Structures, Circular Dichroism Spectra and Absolute Configurations of Some L-Ascorbic Acid Derivatives
( Crystal Structures, Circular Dichroism Spectra and Absolute Configurations of Some L-Ascorbic Acid Derivatives )
Izvornik: Journal of Molecular Structure (0022-2860) 687 (2004); 101-106
Vrsta rada: članak
Ključne riječi: L-ascorbic acid derivatives; Single crystal X-ray diffraction; Circular dichroism spectroscopy; Cotton effect
( L-ascorbic acid derivatives; Single crystal X-ray diffraction; Circular dichroism spectroscopy; Cotton effect )
Sažetak:
Chiral 2, 3-O, O-dibenzyl ethers of L-ascorbic acid with 4-(5, 6-epoxy)- (4) and 6-O-tosyl- (8) functional groups were studied by X-ray crystallography and circular dichroism (CD) spectroscopy. The stereostructure of 2, 3-O, O-dibenzyl-5, 6-isopropylidene-L-ascorbic acid (6) and 8 was determined by X-ray crystal structure analysis. Comparison of the CD-spectra of 4 and 8 with the CD-spectra of their synthetic precursors (2-3, 5-7) and L-ascorbic acid (1) itself, as well as crystal structures of 6 and 8 permitted to deduce the absolute configuration of 4. Thus, the chiral atoms C-4 and C-5 in 4 have R- and S- configurations, which is consistent with the configuration of 1.
Projekt / tema: 0125003
Izvorni jezik: eng
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Kategorija: Znanstveni
Znanstvena područja:
Kemija
URL cjelovitog teksta:
Google Scholar: Crystal Structures, Circular Dichroism Spectra and Absolute Configurations of Some L-Ascorbic Acid Derivatives



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