Spatial structure of diacetyldihydroungminorine
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The structure of diacetyldihydroungminorine, C21H25NO7 (I), has been determined by the x-ray structural method: diffractometer, CuKα radiation, 1278 reflections, R=0.089. An analysis has been made of the conformation of the (I) molecule in comparison with that observed for dihydrolycorine in solution and in the crystalline form. It was shown that the conformations of rings B, C, and D of the (I) molecule in the crystal and of dihydrolycorine in solution are identical. The lack of correspondence of the crystal-solution conformations in dihydrolycorine is connected with an inversion of the unshared electron pair of the nitrogen atom on the formation of a salt — the hydrobromide.
KeywordsNitrogen Organic Chemistry Nitrogen Atom Spatial Structure Electron Pair
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- 1.M. Normatov, Kh. A. Abduazimov, and S. Yu. Yunusov, Dokl. Akad. Nauk UzSSR,9, 23 (1961).Google Scholar
- 2.J. C. Clardy, W. C. Wildman, and F. M. Hauser, J. Am. Chem. Soc.,92, 1781 (1970).Google Scholar
- 3.M. R. Yagudaev, Author's abstract of dissertation...Doctor of Chemical Sciences [in Russian], Tashkent (1974).Google Scholar
- 4.Kh. A. Kadyrov, A. Abdusamatov, and S. Yu. Yunusov, Khim. Prir. Soedin., 749 (1980).Google Scholar
- 5.K. Kotera, Y. Hamada, K. Tori, and K. Kuriyama, Tetrahedron Lett., No. 18, 2009 (1966).Google Scholar
- 6.M. Shiro, T. Sato, and H. Koyama, J. Chem. Soc. (B), 1544 (1968).Google Scholar
- 7.K. L. Seitanidi, Author's abstract of dissertation...Candidate of Chemical Sciences [in Russian], Tashkent (1977).Google Scholar
- 8.K. L. Seitanidi and M. R. Yagudaev, Khim. Prir. Soedin., 500 (1976).Google Scholar
- 9.F. N. Allen, O. Kennard, and D. G. Watson, J. Chem. Soc., Perkin Trans. II, S1-S19 (1987).Google Scholar
- 10.A. Immirzi and C. Fuganti, J. Chem. Soc. (B), 1218 (1971).Google Scholar
- 11.V. I. Andrianov, Z. Sh. Safina, and B. L. Tarnopol'skii, Zh. Strukt. Khim.,15, 911 (1974).Google Scholar