Skip to main content

12 Result(s)

within G. N. Tishchenko Remove this filter

and

  1. No Access

    Article

    Synthesis and crystal structure of 3,10-dimethyl-10H-dibenzo[b,e]iodinium tetrafluoroborate

    The crystal and molecular structures of a chiral cyclic iodonium salt, namely, 3,10-dimethyl-10H-dibenzo[b,e]iodinium tetrafluoroborate, is solved by the direct method (a = 20.678(5) Å, b = 20.738(5) Å, c = 8.408...

    N. E. Zhukhlistova, G. N. Tishchenko, T. P. Tolstaya… in Crystallography Reports (2001)

  2. No Access

    Article

    Structure of a new crystalline modification of 4-amino-5-ethoxymethyl-1,2-dimethylpyrimidinium iodide

    The structure of a new crystalline modification (II) of 4-amino-5-ethoxymethyl-1,2-dimethylpyrimidinium iodide, C9H16IN3O, the major product of methylation of 4-amino-5-ethoxymethyl-2-methylpyrimidine has been de...

    N. E. Zhukhlistova, G. N. Tishchenko in Crystallography Reports (2001)

  3. No Access

    Article

    Crystal and molecular structure of the membrane-active antibiotic enniatin C

    The crystal structure of the cyclic hexadepsipeptide antibiotic enniatin C c[-(L-MeLeu-D-Hyi)3-], C34H59N3O9, was established by X-ray structure analysis (sp. gr. P21, a = 20.205(5) Å, b = 8.702(2) Å, c = 25.587(...

    G. N. Tishchenko, N. E. Zhukhlistova in Crystallography Reports (2000)

  4. No Access

    Article

    Stereoisomerism of the matrine alkaloids

    The stereoisomerism of compounds of the matrine series is considered on the basis of the authors' own x-ray structural studies of these alkaloids. A corrected series of eight stereoisomers has been drawn up. I...

    B. T. Ibragimov, G. N. Tishchenko, Yu. K. Kushmuradov… in Chemistry of Natural Compounds (1982)

  5. No Access

    Article

    Molecular and crystal structure of tetrahydroneosophoramine

    The structure of tetrahydroneosophoramine has been studied by x-ray structural analysis. Rings A, B, and C have the chair conformation, and ring D the half-chair conformation. On the basis of a semiquantitativ...

    B. T. Ibragimov, S. A. Talipov, G. N. Tishchenko… in Chemistry of Natural Compounds (1981)

  6. No Access

    Article

    Molecular and crystal structure of sophoridine N-oxide

    The spatial structure of natural sophoridine N-oxide has been studied by x-ray structural analysis. It has been shown that when sophoridine is oxidized, rings B and C, which have the boat form, are deformed in...

    B. T. Ibragimov, G. N. Tishchenko, S. A. Talipov… in Chemistry of Natural Compounds (1981)

  7. No Access

    Article

    Structure of isosophoridine

    A complete x-ray study of the structure of a stereoisomer of the alkaloid matrine -isosophoridine - has been made. Rings A and B have the cis type of linkage. Rings A, B, and C have the chair form and D the ha...

    B. T. Ibragimov, G. N. Tishchenko, S. A. Talipov… in Chemistry of Natural Compounds (1981)

  8. No Access

    Article

    Structure of tetrahydroneosophoramine

    B. T. Ibragimov, S. A. Talipov, G. N. Tishchenko… in Chemistry of Natural Compounds (1979)

  9. No Access

    Article

    X-ray structural investigation of allomatrine and its N-oxide

    B. T. Ibragimov, G. N. Tishchenko, Yu. K. Kushmuradov… in Chemistry of Natural Compounds (1979)

  10. No Access

    Article

    Molecular and crystal structure of sophoridine

    The three-dimensional structure of the alkaloid sophoridine C15H24ON2 has been studied by x-ray structural analysis; the parameters of the elementary cell are: a=5.458, b=10.640, c=11.989 Å; γ=99.7°; z=2; space g...

    B. T. Ibragimov, G. N. Tishchenko, Yu. K. Kushmuradov… in Chemistry of Natural Compounds (1979)

  11. No Access

    Article

    Dispersion of the optical rotation of derivatives of gramicidin S

    1. The dispersion of the optical rotation and UV absorption spectra of derivatives of gramicidin S with heavy at...

    K. A. Zykalova, G. N. Tishchenko… in Bulletin of the Academy of Sciences of the… (1970)

  12. No Access

    Article

    The crystal structure of the isomorphous dihalogeno-dipyridineates of cobalt and zinc

    M. A. Porai-Koshits, L. O. Atovmyan, G. N. Tishchenko in Journal of Structural Chemistry (1960)