Suchergebnisse

Ergebnisse 1 - 2 von 2 :

  • "Ionone Glycosides" x
  • Analytische Chemie x
Alle zurücksetzen

ANNEX List of chiral substanes analyzed by the treated techniques Chiroptical methods Carotenoids 38 Cocaine 38 Codeine 38 3,4-Dihydroxy-ß-ionone glycosides 38 Epinephrine 38 Flavonoids 38 Glucosinolates 38 Glycosides 38 Nicotine 38 Penicillamine 38 Saponins 38 Nuclear magnetic resonance Alcohols 43,44 45,47,48,49 Aldehydes 46 Alkenes 44 Alkynes 48 Allenes 48 Amines, primary and secondary 43, 44, 47, 48,54 a-Amino esters 45 Amino alcohols 45,54 2- Butanol 47 sec-Butylamine 48 Carbonyls 46 Carboxylic acids 45,46,53,54 Cyclohexanones 48

have been published [52]. The exciton chirality method is also useful for the stereochemical analysis of the aglycone part in glycosides. Recently, the determination of the absolute stereo- chemistry of natural 3,4-dihydroxy-ß-ionone glycosides has established the con- figuration as being 3ß,4ß (3S,4R) [53]. Furthermore, a lot of ORD and CD spectroscopy has been done in the field of carotenoid chemistry. In a fundamental paper by Klyne's and Weedon's groups [54] ORD spectra of carotenoids have been studied systematically. Extensive CD studies of carotenoids