Full Assignment of Resonances in PMR and 13C NMR Spectra of 1-Hydroxyquinopimaric Acid

Three (―)-cytisine derivatives and 1-hydroxyquinopimaric acid as acetylcholinesterase inhibitors

“…Moreover, 1-hydroxyquinopimaric acid is one of the framework compounds of the “bird cage” type [9]. Herz et al [10] reported 1-hydroxyquinopimaric acid synthesis through selective reduction of quinopimaric acid, the diene adducts of levopimaric acid ( Pinus sylvestris plant metabolite) and p-benzoquinone.…”

“…Herz et al [10] reported 1-hydroxyquinopimaric acid synthesis through selective reduction of quinopimaric acid, the diene adducts of levopimaric acid ( Pinus sylvestris plant metabolite) and p-benzoquinone. This compound is used both as intermediates in organic synthesis and as synthons for building up non-framework polycyclic substances [9,11] due to it possess uncommon, often unique properties due to the rigidity of their carbocyclic structure. However, the biochemical activities of this substance are not deeply studied.…”