✦ LIBER ✦

Resolution of Racemic Jasmonic Acid and Abscisic Acid by Chiral High Performance Liquid Chromatography

✍ Scribed by Robert Kramell; Gernot Schneider; Otto Miersch

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 314 KB
Volume: 7
Category: Article
ISSN: 0958-0344
DOI: 10.1002/(sici)1099-1565(199607)7:4<209::aid-pca292>3.0.co;2-h

No coin nor oath required. For personal study only.

✦ Synopsis

The direct resolution of racemic jasmonic acid (JA) and abscisic acid (ABA), as the free acids, into the corresponding enantiomers by high performance liquid chromatography on a Nucleodex p-PM column is reported. The resolution factors (R,,,=1.38; R,,,,=1.65) were such that the method could be applied to the separation of these racemates on a preparative scale. The racemates of methyl jasmonate and its 12-hydroxyderivative could be resolved as their respective methyl esters. The pure isomers obtained were characterized using circular dichroism and optical rotatory dispersion.

📜 SIMILAR VOLUMES

Chiral resolution of flobufen by high pe

Chiral resolution of flobufen by high performance liquid chromatography and capillary electrophoresis

✍ Eva Tesarvá; Martin Gila; Alexandr Jegorov; M. Uhrová; Zdenck Deyl 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 119 KB 👁 1 views

The enantiomeric separation of an anti-inflammatory drug flobufen was performed on various chiral columns in liquid chromatography and by reversed phase chromatography and by capillary electrophoresis with ␤cyclodextrin as a chiral selector in the mobile phase and background electrolyte, respectivel

Simultaneous Determination of Ascorbic A

Simultaneous Determination of Ascorbic Acid and Dehydroascorbic Acid in Plant Materials by High Performance Liquid Chromatography

✍ Michael Tausz; Ilse Kranner; Dieter Grill 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 371 KB 👁 2 views

The adaptation of an isocratic reversed-phase ion-pairing high performance liquid chromatographic method in combination with derivatization of dehydroascorbic acid by l&phenylenediamine prior to injection for simultaneous determination of ascorbic acid and dehydroascorbic acid in plant materials is

Enhanced Resolution of Conjugated Linole

Enhanced Resolution of Conjugated Linoleic Acid Isomers by Tandem-Column Silver-Ion High Performance Liquid Chromatography

✍ Rickert, Rainer ;Steinhart, Hans ;Fritsche, Jan ;Sehat, Najibullah ;Yurawecz, Ma 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 70 KB 👁 1 views

A commercial mixture of conjugated linoleic acid (CLA) isomers, reportedly consisting of six components, was recently resolved into 12 peaks attributed to CLA isomers using silver-ion high performance liquid chromatography (Ag + -HPLC). In this study, the coupling of two analytical silver-ion high p

Chiral separation by high-performance li

Chiral separation by high-performance liquid chromatography of D/L-amino acids labelled with a chiral fluorescent reagent

✍ Toshimasa Toyo’oka; Dongri Jin; Kayoko Nagakura; Sumiyo Murofushi 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 35 KB 👁 1 views

Figure 1. Reaction of D/L-amino acids with R(À)-DBD-PyNCS.

Enantiomeric separation of five amino ac

Enantiomeric separation of five amino acids by high-performance liquid chromatography on a chiral crown ether column

✍ François Gimenez; Mireille Soursac; Robert Farinotti 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 129 KB 👁 1 views

A chiral liquid chromatographic method was validated to analyze the Dand L-enantiomers of five amino acids contained in a commercial solution: aspartic acid, leucine, lysine, phenylalanine, and valine. These 10 compounds were separated on a chiral crown ether column with a mobile phase composed of w

Analysis of the amino acid indospicine i

Analysis of the amino acid indospicine in biological samples by high performance liquid chromatography

✍ Sandra Pollitt; Mervyn P. Hegarty; Michael A. Pass 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 101 KB 👁 2 views