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Synthesis of O-Vinyl Ethers of Pentacyclic Triterpene Alcohols and Lupane-Type Oximes

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Chemistry of Natural Compounds Aims and scope

Vinylation by acetylene of lupane-type pentacyclic triterpene C-28- and C-3β-alcohols and C-20-oximes in superbase solutions synthesized the corresponding C-28- and C-3β-O-vinyl ethers and C-20-O-vinyloximes. The reaction of 3β,28-dimethoxy-29-norlupan-20-one with acetylene in superbase KOH–DMSO produced a derivative with an N-vinylpyrrole ring in the C-19 side chain.

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Acknowledgment

The work was performed on a State Task Topic for UfIC, UFRC, RAS (No. AAAA-A17-117011910025-6). The spectral part of the study used equipment at the Khimiya CUC, UfIC, RAS and Agidel RCUC, UfIC, RAS.

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Correspondence to N. G. Komissarova.

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Translated from Khimiya Prirodnykh Soedinenii, No. 3, May–June, 2020, pp. 414–418.

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Komissarova, N.G., Orlov, A.V. & Shitikova, O.V. Synthesis of O-Vinyl Ethers of Pentacyclic Triterpene Alcohols and Lupane-Type Oximes. Chem Nat Compd 56, 481–486 (2020). https://doi.org/10.1007/s10600-020-03067-2

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  • DOI: https://doi.org/10.1007/s10600-020-03067-2

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