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Study of alkaloids from the flora of the Siberian and Altai regions. 6. Crystal and molecular structure of songorine Z-oxime |
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| Authors: | Bagryanskaya I Yu Gatilov Yu V Ganbaatar J Osadchii S A Shakirov M M Shults E E Tolstikov G A |
| Institution: | (1) N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 9 prosp. Akad. Lavrent"eva, 630090 Novosibirsk, Russian Federation;(2) Institute of Chemistry and Chemical Technology of Mongolian Academy of Sciences, 54—56 ul. Jukova, 211051 Ulan-Bator, Mongolia |
| Abstract: | Oximation of songorine afforded a mixture of its Z- and E-oximes. The crystal and molecular structure of the Z-isomer was established by X-ray diffraction analysis. Its structure was also confirmed by the spectral data (2D 1H—1H and 13C—1H NMR spectroscopy and mass spectrometry). The structure of isomeric E-oxime was established by comparing its NMR spectroscopic data (1H and 13C) with the data for the Z-isomer. |
| Keywords: | diterpene alkaloids songorine oxime X-ray diffraction analysis 2D NMR spectroscopy |
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