NMR assignment in regioisomeric hydroquinones

NMR assignment in regioisomeric hydroquinones

Copyright © 2011 John Wiley & Sons, Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Magnetic resonance in chemistry : MRC. - 1985. - 49(2011), 6 vom: 01. Juni, Seite 358-65
1. Verfasser: Dobado, Jose A (VerfasserIn)
Weitere Verfasser: Gómez-Tamayo, José C, Calvo-Flores, Francisco G, Martínez-García, Henar, Cardona, Wilson, Weiss-López, Boris, Ramírez-Rodríguez, Oney, Pessoa-Mahana, Hernán, Araya-Maturana, Ramiro
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2011
Zugriff auf das übergeordnete Werk:Magnetic resonance in chemistry : MRC
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Hydroquinones
Beschreibung
Zusammenfassung:Copyright © 2011 John Wiley & Sons, Ltd.
A set of regioisomeric pairs of tricyclic hydroquinones, analogues of antitumor 9,10-dihydroxy-4,4-dimethyl-5,8-dihydroanthracen-1(4H)-one (1) and other derivatives, were synthesized and their regiochemistry and NMR spectra assigned by using (1)H-detected one-bond (C-H) HMQC and long-range C-H HMBC, in good agreement with theoretical O3LYP/Alhrichs-pVTZ calculations. The 5-hydroxymethyl derivatives (11, 15, 19) showed a (3)J(H, H) coupling constant of methylene protons evidencing the presence of a seven-membered intramolecular hydrogen bonded ring, not observed for the 8-hydroxymethyl isomers
Beschreibung:Date Completed 07.11.2011
Date Revised 13.05.2011
published: Print-Electronic
Citation Status MEDLINE
ISSN:1097-458X
DOI:10.1002/mrc.2745