𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Separation of Enantiomeric Irones by Gas-Liquid Chromatography on Modified Cyclodextrins

✍ Scribed by Franz-Josef Marner; Torsten Runge; Wilfried A. König


Publisher
John Wiley and Sons
Year
1990
Tongue
German
Weight
313 KB
Volume
73
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

Natural irones found in the essential oil of Iris rhizomes often are mixtures of enantiomers. The separation of all optical isomers of the irones by GLC on modified cyclodextrins and the determination of their composition within different Iris oils is described. The significance for the biosynthesis of the cycloiridals, C~31~‐triterpenoids, which serve as precursors of the irones, is discussed.


📜 SIMILAR VOLUMES


Direct enantiomeric separations by high
✍ Soon M. Han 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 119 KB 👁 2 views

Due to their identical chemical and physical properties, the separation of enantiomers has been considered one of the most difficult challenges in chemistry from both an analytical or a preparative viewpoint. With the development and commercialization of many new or improved chiral stationary phases

Enantiomeric separation of halocarboxyli
✍ Koch, E. ;Nicholson, G. J. ;Bayer, E. 📂 Article 📅 1984 🏛 John Wiley and Sons 🌐 English ⚖ 412 KB

The direct determination of the enantiomeric purity of halocarboxylic acids is described. The method used involves gas chromatographic separation of the corresponding tert-butylamides on deactivated glass or fused-silica capillaries coated with Chirasil-Val. Both the influence of the amide moiety on

Enantiomeric separation by using nano-li
✍ Giovanni D'Orazio; Salvatore Fanali 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 482 KB

## Abstract The present study shows a new nano‐liquid chromatographic method for β‐blocker enantiomers' separation. This method consists of using a capillary column packed with silica particles which were chemically modified with vancomycin. On‐column focusing allowed to inject relatively high samp

Enantiomeric separation of neutral hydro
✍ Andrew W. Lantz; Roman V. Rozhkov; Richard C. Larock; Daniel W. Armstrong 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 108 KB

## Abstract The enantiomeric separations of several very hydrophobic dihydrofuroflavones were performed and optimized using cyclodextrin‐modified micellar capillary electrophoresis. Overall, the greatest enantiomeric peak‐to‐peak separations for the greatest number of flavones were obtained with hy

Separation of atropisomeric polychlorina
✍ Wei-Chao Lin; Fang-Chu Chang; Chun-Hsiung Kuei 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 137 KB 👁 2 views

The enantiomeric separation of atropisomeric polychlorinated biphenyls Ž was studied by cyclodextrin-modified micellar electrokinetic chromatography CD-. MEKC . Four CD derivatives were investigated as chiral selectors, and 2-hydroxyl-␥-CD gave the best resolution for the separation of PCB 84. Three