Spatial structure and conformational state of dilupinine esters of dibasic acids
Conclusions1. The conformational states of dilupinine esters of dibasic acids and their protonated forms, and also their dimethiodides, have been studied by PMR spectroscopy.2. It has been shown that the nature of the conformational transformations of the trans-quinolizidine system of lupinine and of the dilupinine esters of dicarboxylic acids depends fundamentally on the acidity of the medium, the activity of water, the strength of intramolecular bonds, and the concentration of bases.
Zur konfiguration und konstellation isomerer 1-hydroxychinolizidin-derivate
Zusammenfassung Die Konfigurationen der isomeren 1-Hydroxy-7-methyl-chinolizidine und der isomeren 1-Methyl-1-hydroxy-7-methyl-chinolizidine werden aufgrund der NMR-Spektren zugeordnet. Untersuchungen an den protonisierten Verbindungen und den Methojodiden zeigen, dass vorwiegend die polaren Eigenschaften der Substituenten neben der Raumerfullung fur die eingenommene Konformation verantwortlich sind.
Political Developments: Some Conclusions and an Interpretation
When the political decisions and achievements of the post-Khrushchev Soviet leadership are considered as a whole, it is not immediately obvious that there is any pattern to them. It may, nevertheless, be useful to begin by devoting attention to some of the major policy tendencies and outcomes of the past decade, most of which have already been considered in greater detail by other contributors, before going on to enquire if any broad strategy underlying them may be discerned and to attempt to place the various changes in a broader political context.