✦ LIBER ✦

NMR Spectroscopic Characterization of IsomericS-Oxides Derived from α-Lipoic Acid

✍ Scribed by Arndt Müller; Martin Knaack; Alfred Olbrich

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 215 KB
Volume: 35
Category: Article
ISSN: 0749-1581
DOI: 10.1002/(sici)1097-458x(199702)35:2<111::aid-omr29>3.0.co;2-s

No coin nor oath required. For personal study only.

✦ Synopsis

a-Lipoic acid (thioctic acid) was oxidized in saturated solution by means of hydrogen peroxide. The NaHCO 3 resulting mixture of four structurally isomeric S-oxides (b-lipoic acids, thiosulÐnates) was characterized by NMR spectroscopy without chromatographic separation. The regio-and stereochemistry of the S-oxides were elucidated using various one-and two-dimensional NMR techniques. The spectroscopic data obtained allow the quantitative determination of the thiosulÐnates based on a high-Ðeld proton NMR spectrum of the mixture.

📜 SIMILAR VOLUMES

ChemInform Abstract: Anodic Oxidation of

ChemInform Abstract: Anodic Oxidation of Novel Hole-Transporting Materials Derived from Tetraarylbenzidines. Electrochemical and Spectroscopic Characterization.

✍ Rene Faber; G. Felix Mielke; Peter Rapta; Andrej Stasko; Oskar Nuyken 📂 Article 📅 2001 🏛 John Wiley and Sons ⚖ 35 KB 👁 1 views

Synthesis, Characterization, and Magneti

Synthesis, Characterization, and Magnetic Behaviour of Dinuclear Nickel(II) Complexes of N,N′-Substituted Dithiooxamides derived from α-Amino Acids

✍ A. Castiñeiras; M. C. F. Vidal; J. Romero; R. Sáez; A. Matilla; J. Niclós; J. M. 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 German ⚖ 155 KB 👁 2 views

Synthesis and Spectroscopic Characteriza

Synthesis and Spectroscopic Characterization of β-Di-, β-Tri-, and β-Hexapeptides Built with (S)-2-Methylene-3-aminoalkanoic Acids Derived from Alanine, Valine, and Leucine.

✍ Daniel J. Bierbaum; Dieter Seebach 📂 Article 📅 2004 🏛 John Wiley and Sons ⚖ 9 KB 👁 1 views