Triterpene Schiff bases 2–5 were prepared for the first time by reacting N-heterocyclic carbaldehydes with β-allobetulamine. Their structures were confirmed using 1H NMR and 13C NMR spectra and 2D experiments. The structure of 5 was also proved by an X-ray crystal structure analysis.
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Acknowledgment
The work used equipment at the Research Materials and Compounds Common Use Center, PFRC, UrB, RAS. We thank O. A. Maiorova for obtaining NMR spectra and I. A. Borisova for recording IR spectra at the ITC, UrB, RAS. The research was financially supported by the Russian Foundation for Basic Research and the Ministry of Science and Education of Perm Krai in the framework of Science Project No. 19-43-590003 and State Task AAAA-A18-118030790037-7.
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Translated from Khimiya Prirodnykh Soedinenii, No. 2, March–April, 2022, pp. 265–269.
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Denisov, M.S., Dmitriev, M.V., Gagarskikh, O.N. et al. Synthesis and Structural Studies of N-Heterocyclic Schiff Bases of Allobetulamine. Chem Nat Compd 58, 307–311 (2022). https://doi.org/10.1007/s10600-022-03665-2
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DOI: https://doi.org/10.1007/s10600-022-03665-2