caa a22 4500 46903890X CHVBK 20180323132804.0 cr unu---uuuuu 170328e19920101xx s 000 0 eng 10.1007/BF01045303 doi (NATIONALLICENCE)springer-10.1007/BF01045303 Lanthanide induced shifts of aromatic 1,2,3-trimethoxy compounds: Conformational analysis of tetrahydrofurofuran-lignans in solution [Elektronische Daten] [Otmar Hofer, Gerald Wurz] Lanthanideninduzierte Verschiebungen von aromatischen 1,2,3-Trimethoxy-Verbindungen: Konformationsanalyse von Tetrahydrofurofuran-Lignanen in Lösung Summary: The solution conformations of 1,4-diaryl-tetrahydro-1H,3H-furo[3,4-c]furans were determined by means of the LIS technique using a modified LIS-simulation program specially designed for the requirements of the aromatic 1,2,3-trimethoxy arrangement as a bidentate coordination site for the NMR shift reagent. The resulting geometries were confirmed by force field calculations (MM2-87) and compared with X-ray derived structures. Reliable data for the conformations in solution allowed a quantitative estimation of the circular dichroism based on the coupled oscillator model. Springer-Verlag, 1992 Lanthanide induced shift simulation nationallicence Force field nationallicence Circular dichroism nationallicence Coupled oscillator model nationallicence Tetrahydrofurofuran lignans nationallicence Hofer Otmar Institute of Organic Chemistry, University of Vienna, A-1090, Wien, Austria aut Wurz Gerald Institute of Organic Chemistry, University of Vienna, A-1090, Wien, Austria aut Monatshefte für Chemie / Chemical Monthly Springer-Verlag 123/1-2(1992-01-01), 105-120 0026-9247 123:1-2<105 1992 123 706 https://doi.org/10.1007/BF01045303 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01045303 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hofer Otmar Institute of Organic Chemistry, University of Vienna, A-1090, Wien, Austria aut NATIONALLICENCE 700 1- Wurz Gerald Institute of Organic Chemistry, University of Vienna, A-1090, Wien, Austria aut NATIONALLICENCE 773 0- Monatshefte für Chemie / Chemical Monthly Springer-Verlag 123/1-2(1992-01-01), 105-120 0026-9247 123:1-2<105 1992 123 706 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer