Xu FF, Pereira CL, Seeberger PH. 1,3-Dibromo-5,5-dimethylhydantoin as promoter for glycosylations using thioglycosides.
Beilstein J Org Chem 2017;
13:1994-1998. [PMID:
29062419 PMCID:
PMC5629399 DOI:
10.3762/bjoc.13.195]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 09/07/2017] [Indexed: 01/02/2023] Open
Abstract
1,3-Dibromo-5,5-dimethylhydantoin (DBDMH), an inexpensive, non-toxic and stable reagent, is a competent activator of thioglycosides for glycosidic bond formation. Excellent yields were obtained when triflic acid (TfOH) or trimethylsilyl trifluoromethanesulfonate (TMSOTf) were employed as co-promoters in solution or automated glycan assembly on solid phase.
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