Tsuruta O, Yuasa H, Kurono S, Hashimoto H. Syntheses of two trimannose analogs each containing C-mannosyl or 5-thio-C-mannosyl residue: their affinities to concanavalin A.
Bioorg Med Chem Lett 1999;
9:807-10. [PMID:
10206540 DOI:
10.1016/s0960-894x(99)00087-6]
[Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
C-Mannosyl residue-containing trimannose ManC alpha(1,6)[Man alpha(1,3)Man] (2) and 5-thio-C mannosyl residue-containing trimannose 5SManC alpha(1,6)[Man alpha(1,3)Man] (3) were synthesized via a glycosyl radical addition to enone derivative of mannose (6). Dissociation constants for the binding of these trisaccharides to concanavalin A (ConA) were determined by a fluorescence anisotropy inhibition assay: Kd = 198 and 31 microM, respectively. The unexpectedly large Kd value for the compound 2 compared with the compound 3 and the natural trimannose 1 demonstrates a characteristic of C-glycoside.
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