The Humulinic Acids III. The NMR Spectra and the Structure of HAA and HAB

Autor: M. J. O. Anteunis, F. Alderweireldt
Rok vydání: 2010
Předmět:
Zdroj: Bulletin des Sociétés Chimiques Belges. 73:285-292
ISSN: 0037-9646
DOI: 10.1002/bscb.19640730314
Popis: A detailed analysis of the proton magnetic resonance (PMR) spectra of humulinic acid A and humulinic B shows that the former is the trans and the the latter the cis form with structures I and II respectively. Evidence is advanced that J trans is smaller than J cis in ring compounds with several sp2 carbon atoms in the ring.
Databáze: OpenAIRE