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Publikācija: Betulin 3

Publication Type Scientific article indexed in SCOPUS or WOS database
Funding for basic activity Unknown
Defending: ,
Publication language English (en)
Title in original language Betulin 3,28-di-O-tosylate
Field of research 1. Natural sciences
Sub-field of research 1.4 Chemical sciences
Authors Uldis Peipiņš
Niks Freimanis
Dmitrijs Stepanovs
Anatolijs Mišņovs
Māris Turks
Keywords crystal structure; hydrogen bonding; betulin 3,28-di-O-tosylate; natural product
Abstract The title compound, C44H62O6S2 {systematic name: (1R,3aS,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bR)-5a,5b,8,8,-11a-pentamethyl-1-(prop-1-en-2-yl)-3a-[(tosyloxy)methyl]-icosahydro-1H-cyclopenta[a]chrysen-9-yl 4-methylbenzenesulfonate}, was obtained by tosylation of naturally occurring betulin. All the cyclohexane rings adopt chair conformations and the cyclopentane ring adopts a twisted envelope conformation, with the C atom bearing the tosylmethyl substituent forming the flap. In the crystal, molecules form a three-dimensional network through multiple weak C-H...O hydrogen bonds.
DOI: 10.1107/S1600536814016602
Hyperlink: http://journals.iucr.org/e/issues/2014/08/00/fy2116/index.html 
Reference Peipiņš, U., Freimanis, N., Stepanovs, D., Mišņovs, A., Turks, M. Betulin 3,28-di-O-tosylate. Acta Crystallographica Section E: Structure Reports Online, 2014, Vol.70, Part 8, pp.o879-o880. ISSN 1600-5368. Available from: doi:10.1107/S1600536814016602
Additional information Citation count:
  • Scopus  0
ID 18528