3-Formyl- and 3-bromo-N-methylcytisine derivatives of the alkaloid N-methylcytisine from Thermopsis alterniflora were synthesized. Their structures were established using NMR spectroscopy and X-ray crystal structure analyses. The crystal structure of 3-formyl-N-methylcytisine perchlorate involves two protonated cations mutually bonded by a bifurcated N–H…O H-bond. A Br…O donor–acceptor interaction is observed in the crystal of 3-bromo-N-methylcytisine.
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Translated from Khimiya Prirodnykh Soedinenii, No. 4, July–August, 2018, pp. 621–623.
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Makhmudov, U.S., Rakhimov, S.B., Vinogradova, V.I. et al. 3-Formyl- and 3-Bromo-N-Methylcytisine Derivatives. Chem Nat Compd 54, 735–738 (2018). https://doi.org/10.1007/s10600-018-2458-0
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DOI: https://doi.org/10.1007/s10600-018-2458-0