Márquez JM, Martínez-Castro E, Gabrielli S, López Ó, Maya I, Angulo M, Álvarez E, Fernández-Bolaños JG. Alkoxyamine-cyanoborane adducts: efficient cyanoborane transfer agents.
Chem Commun (Camb) 2011;
47:5617-9. [PMID:
21483971 DOI:
10.1039/c1cc11345c]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We report the synthesis of the hitherto unknown zwitterionic alkoxyamino cyanoboranes by reduction of O-alkyloximes with sodium cyanoborohydride; unprecedented cyanoboronated N-alkoxyformamidines were also isolated as by-products. Boronated alkoxyamines were found to be efficient cyanoborane transfer agents towards more basic amines, including aminosugars; they were also successfully transformed into neoglycoconjugates by the neoglycorandomization reaction with reducing sugars.
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