3P8X:
reference: Synthesis, structure, and biological activity of des-side chain analogues of 1alpha,25-dihydroxyvitamin D3 with substituents at C18., Verlinden L, Verstuyf A, Eelen G, Bouillon R, Ordonez-Moran P, Larriba MJ, Munoz A, Rochel N, Sato Y, Moras D, Maestro M, Seoane S, Dominguez F, Eduardo-Canosa S, Nicoletti D, Moman E, Mourino A, ChemMedChem. 2011 May 2;6(5):788-93. doi: 10.1002/cmdc.201100021. Epub, 2011 Mar 29. PMID: 21520419

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