TY - JOUR A1 - Flaskamp, Elmar A1 - Nonnenmacher, Gerhard A1 - Zimmermann, Gottfried A1 - Isaac, Otto T1 - Zur Stereochemie der Bisaboloide aus Matricaria chamomilla L. T1 - On the stereochemistry of the bisaboloids from matricaria chamomilla L. T2 - Zeitschrift für Naturforschung, B N2 - The stereochemistry of the bisaboloids in chamomile-with the exception of bisabolol-oxide C-has been elucidated. The in-vitro-examination of the mutual convertibilities of some bisaboloids gave evidence for the stereochemical accordance of the common chiral centres of all the bisaboloids. The absolute configurations of the remaining third asymmetric carbon atoms in bisabololoxide A and B have been determined by NMR spectrometric studies in comparison with their unnatural semisynthetic epimers. All the stereogenic centres of the bisabololoxides A and B, of (-)-α-bisabolol and of bisabolonoxide A turn out to be S-configurated. KW - Matricaria chamomilla L KW - Bisaboloids KW - 13C NMR Spectra KW - Shift-Reagents Y1 - 2014 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/71951 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-719511 SN - 1865-7117 SN - 0932-0776 VL - 36.1981 IS - 8 SP - 1023 EP - 1030 PB - Verlag der Zeitschrift für Naturforschung CY - Tübingen ER -