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Investigation of the lability of the conformations of some alkaloids of the quinolizidine series

✍ Scribed by T. K. Yunusov; A. I. Ishbaev; V. B. Leont'ev; A. S. Sadykov

Book ID
112463240
Publisher
Springer
Year
1973
Tongue
English
Weight
283 KB
Volume
7
Category
Article
ISSN
0009-3130

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The first quantitative determination of
The first quantitative determination of conformational equilibrium in quinolizidine-piperidine alkaloids
✍ Tadeusz Brukwicki; PrzybyΕ‚ Anna; Waleria Wysocka; Jacek SoΕ›nicki πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 French βš– 623 KB

The fraction of the conformer with the boat ring C in the conformational equilibrium in N-methylangustifoline (7) in chloroform and benzene solutions was determined to be ca. 34% using coupling constant J7-13~3. In angustifoline (5) J7-131~ could not be determined directly from the spectra; a simula