Synthesis and Transformation of Triterpenoids with a β-Ketonitrile Fragment in Five-Membered Ring A
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DOI: 10.1007/s10600-020-03233-6
Abstract: Triterpenoids with a β-ketonitrile group in five-membered ring A were synthesized via intramolecular oxonitrile cyclization of C-3 methyl esters of 1-cyano-substituted 2,3-seco-triterpene acids. The intramolecular cyclization to form the triterpene ketonitriles and subsequent reduction of… read more here.
Keywords: membered ring; synthesis transformation; transformation triterpenoids; triterpenoids ketonitrile ... See more keywords