L 25 30 35 miti C D F 2 -25 30 min 25 30 min Figure 4 Chromatographic behavior of racemic "pineapple ketone" (6) = A: HPLC on Chiraspher (eluent: pentane/diethyl ether (70 : 30)); B-D: CGC on permethylated cyclodextrin phase (110 "C isothermal); B: (6)-racemate; C: fraction (F,); D: fraction (F2).
Stereoisomeric flavor compounds, part LXI: Enantioselective analysis of aroma-relevant dihydrofuranones
✍ Scribed by Bruche, Günther ;Dietrich, Armin ;Mosandl, Armin
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 354 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0935-6304
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The odor impression of the pure enantiomers of various chiral dihydrofuranones which are important flavor compounds has been evaluated by sniffing the well separated optical antipodes in the GC eluate from heptakis(2,3‐di‐O‐methyl‐6‐TBDMS)‐β‐cyclodextrin as the chiral phase for capillary gas chromato‐graphic separation. Liquid chromatographic separation has been achieved by the use of bonded β‐cyclodextrin as the chiral stationary phase and methanol–water as eluent. Enantiomer separation in the latter was improved by addition of triethylammonium acetate to the eluent.
📜 SIMILAR VOLUMES
## Abstract Preparative resolution of the enantiomers of several chiral dihydrofuranones, known to be important flavor compounds, has been achieved by combining the use of bonded β‐cyclo‐dextrin as chiral stationary phase with closed‐loop recycling chromatography. The purity of the separated enanti
## Abstract Using heptakis‐(2,3‐di‐__O__‐acetyl‐6‐__O__‐__tert__‐butyldimethylsilyl)‐β‐cy‐clodextrin as the chirul stationary phase in enantioselective gas chromatography, the simultaneous enantioselective analysis of all eight 3‐butylhexahydrophthalide Stereoisomers was achieved. Fur‐thermore, the
## Abstract The characteristics of the new chiral stationary phase heptakis(2,3‐di‐__O__‐methyl‐6‐__O__‐__tert__‐butyldimethylsilyl)‐β‐cyclodextrin are outlined and compared with permethyl‐ and perethyl‐β‐cyclodextrins.