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    Bioorg Med Chem Lett. 2008 Aug 1;18(15):4287-90. Epub 2008 Jul 3.

    Structure-activity relationship studies on vitamin D lactam derivatives as vitamin D receptor antagonist.

    Cho K, Uneuchi F, Kato-Nakamura Y, Namekawa J, Ishizuka S, Takenouchi K, Nagasawa K.

    Department of Biotechnology and Life Science, Faculty of Technology, Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Koganei, Tokyo 184-8588, Japan.

    Structure-activity relationship studies on 1alpha,25-dihydroxyvitamin D(3)-26,23-lactams (DLAMs), antagonists of vitamin D, were conducted, focusing on the substituents of the phenyl group. One of the derivatives (23S,25S)-DLAM-1P-3,5(OEt)(2), showed potent antagonistic activity with an IC(50) of 90nM.

    PMID: 18635349 [PubMed - indexed for MEDLINE]

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    • Calcitriol (Rocaltrol®)

      Calcitriol is a form of vitamin D that is used to treat and prevent low levels of calcium in the blood of patients whose kidneys or parathyroid glands (glands in the neck that release natural substances to control the am...