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Journal of Structural Chemistry

2009 year, number 4

INCLUSION COMPOUNDS BASED ON 16(S)-DIHYDRO- AND 15-ENE-STEVIOLS

O. A. Lodochnikova, R. N. Khaibullin, R. Z. Musin, A. T. Gubaidullin, V. E. Kataev
Keywords: diterpenoids, diterpenoids, steviol, hydrogen bonds, inclusion compounds
Pages: 685-690

Abstract

XRD is used to study the structures of inclusion compounds of diterpenoid 15-ene-steviol with chloroform and 16-S-dihydrosteviol with chloroform and ethyl acetate. In all three cases, the guest-host ratio is 1:2; by means of a branched system of hydrogen bonds, diterpenoid molecules form a three-dimensional associate with helical voids, in which solvent molecules are located. Crystals of all three complexes are isostructural, the ethyl acetate molecule being localized in the corresponding inclusion compound, while solvent molecules are disordered in complexes with chloroform.