Synthesis and Biological Activity of 1α,25-Dihydroxy-18-norvitamin D<sub>3</sub> and 1α,25-Dihydroxy-18,19-dinorvitamin D<sub>3</sub>
作者:Rafal R. Sicinski、Kato L. Perlman、Jean Prahl、Connie Smith、Hector F. DeLuca
DOI:10.1021/jm950745t
日期:1996.1.1
1 alpha, 25-dihydroxy-18-norvitamin D3 and 1 alpha, 25-dihydroxy-18,19-dinorvitamin D3 were prepared via Wittig-Horner coupling of 25-hydroxy-18-nor Grundmann type ketone with the corresponding A-ring phosphine oxides. Configuration at C-13 in the 18-nor Grundmann type alcohol (C,D-ringsynthon), obtained by oxidative degradation of vitaminD3, was determined by 1H NMR spectroscopy and molecular mechanics