Kato Y, Nakano Y, Sano H, Tanatani A, Kobayashi H, Shimazawa R, Koshino H, Hashimoto Y, Nagasawa K. Synthesis of 1α,25-dihydroxyvitamin D3-26,23-lactams (DLAMs), a novel series of 1α,25-dihydroxyvitamin D3 antagonist.
Bioorg Med Chem Lett 2004;
14:2579-83. [PMID:
15109656 DOI:
10.1016/j.bmcl.2004.02.076]
[Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2004] [Revised: 02/20/2004] [Accepted: 02/21/2004] [Indexed: 11/22/2022]
Abstract
Novel vitamin D(3) analogs having a lactam structure in their side chains, 1 alpha,25-dihydroxyvitamin D(3)-26,23-lactams (DLAMs), were designed based on the principle of regulation of the folding of helix-12 in the vitamin D nuclear receptor (VDR). The new analogs were synthesized via 1,3-dipolar cycloaddition reaction and subsequent reduction of the isoxazolidine as key steps. Among the analogs, (23S,25S)-DLAM-01 (4a) and (23S,25S)-DLAM-1P (5a) bind strongly to VDR. Moreover, these analogs were found to inhibit the differentiation of HL-60 cells induced by 1 alpha,25-dihydroxyvitamin D(3).
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