Conformational transformations of lupinine in the formation of protonated forms and quaternary salts

Autor:	A. S. Sadykov, T. K. Kasymov, K. Inoyatova, T. K. Yunusov, F. G. Kamaev, V. B. Leont'ev, A. I. Ishbaev
Rok vydání:	1971
Předmět:	chemistry.chemical_classification Base (chemistry) Stereochemistry Infrared spectroscopy Protonation Plant Science General Chemistry General Biochemistry Genetics and Molecular Biology chemistry.chemical_compound Lupinine Crystallography chemistry Nitrogen atom Epilupinine Methiodide
Zdroj:	Chemistry of Natural Compounds. 7:425-428
ISSN:	1573-8388 0009-3130
DOI:	10.1007/bf00564730
Popis:	1. The results of a study of IR and PMR spectra have shown that in solution protonated lupinine exists in two interconverting cis-trans conformations the relative amounts of which depend on the temperature, the concentrations of base and water, and the pH of the medium. This process is possible because of a change in the direction of the unshared pair of the nitrogen atom in the inversion process. 1. On the basis of the PMR and IR spectra, lupinine methiodide has the a,e conformation with an e-CH2OH group and epilupinine methiodide has the a,a conformation with an e-CH2OH group.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::15d816a9e21af12dcecb44c8d72874b6 https://doi.org/10.1007/bf00564730 Zobrazit plný text záznamu Full text from SpringerLink