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Chiroptical Properties of Optically Active Thiazolidines Derived from Aldoses and Natural Mercapto-amino Acids

Zoltan Gyorgydeak ; Department of Organic Chemistry, Kossuth Lajos University, H-4010 Debrecen (Hungary)
Albert Levai ; Department of Organic Chemistry, Kossuth Lajos University, H-4010 Debrecen (Hungary)
Gunther Snatzke ; Lehrstuhl fur Strukturchemie, Ruhruniversitat D-4630 Bochum (F. R. Germany

Puni tekst: engleski, pdf (6 MB) str. 185-200 preuzimanja: 111* citiraj
APA 6th Edition
Gyorgydeak, Z., Levai, A. i Snatzke, G. (1987). Chiroptical Properties of Optically Active Thiazolidines Derived from Aldoses and Natural Mercapto-amino Acids. Croatica Chemica Acta, 60 (2), 185-200. Preuzeto s https://hrcak.srce.hr/176346
MLA 8th Edition
Gyorgydeak, Zoltan, et al. "Chiroptical Properties of Optically Active Thiazolidines Derived from Aldoses and Natural Mercapto-amino Acids." Croatica Chemica Acta, vol. 60, br. 2, 1987, str. 185-200. https://hrcak.srce.hr/176346. Citirano 21.04.2021.
Chicago 17th Edition
Gyorgydeak, Zoltan, Albert Levai i Gunther Snatzke. "Chiroptical Properties of Optically Active Thiazolidines Derived from Aldoses and Natural Mercapto-amino Acids." Croatica Chemica Acta 60, br. 2 (1987): 185-200. https://hrcak.srce.hr/176346
Harvard
Gyorgydeak, Z., Levai, A., i Snatzke, G. (1987). 'Chiroptical Properties of Optically Active Thiazolidines Derived from Aldoses and Natural Mercapto-amino Acids', Croatica Chemica Acta, 60(2), str. 185-200. Preuzeto s: https://hrcak.srce.hr/176346 (Datum pristupa: 21.04.2021.)
Vancouver
Gyorgydeak Z, Levai A, Snatzke G. Chiroptical Properties of Optically Active Thiazolidines Derived from Aldoses and Natural Mercapto-amino Acids. Croatica Chemica Acta [Internet]. 1987 [pristupljeno 21.04.2021.];60(2):185-200. Dostupno na: https://hrcak.srce.hr/176346
IEEE
Z. Gyorgydeak, A. Levai i G. Snatzke, "Chiroptical Properties of Optically Active Thiazolidines Derived from Aldoses and Natural Mercapto-amino Acids", Croatica Chemica Acta, vol.60, br. 2, str. 185-200, 1987. [Online]. Dostupno na: https://hrcak.srce.hr/176346. [Citirano: 21.04.2021.]

Sažetak
Optically active thiazolidines substituted at C(2) or/and C(4)
show at least 2 Cotton effects below 260 nm, and different correlations between stereochemistry and CD hold for these compounds and their N-acyl derivatives. By such N-acylation all CD-
-bands are enhanced, and the inherently chiral moiety -S-C-
-N-C(=O)- of absolute conformation shown in Figure 4 always leads to a very strong negative Cotton effect near 205nm, regardless whether C(4) carries a C(=O)X group or not. Signs, positions, and magnitudes of the other CD bands are strongly influenced by other factors, too. Such a conformation is fixed in the lactones XXVIII through XXXIV, but is also preferred for 2,4-cis-disubstitution (with a polyhydroxyalkyl group at C(2) and a carboxylic group at C(4». Exciton interactions between the N-acyl and other (C=O)X - groups do not play a decisive role.

Hrčak ID: 176346

URI
https://hrcak.srce.hr/176346

Posjeta: 187 *