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-ring synthon), obtained by oxidative degradation of vitamin D3, was determined by 1H NMR spectroscopy and molecular mechanics
通过将25-羟基-18-nor Grundmann型酮与相应的A环膦化合的Wittig-Horner偶联制备了1个α-25-二羟基-18-norvitamin D3和1α-25-二羟基-18,19-dinorvitamin D3氧化物。通过1 H NMR光谱和分子力学计算,确定了通过维生素D3的氧化降解获得的18-nor Grundmann型酒精(C,D-环合成子)中C-13的构型。关键中间体18-nor Grundmann型酮的指定反式C / D结点的其他证据来自其手性(圆形二色性数据)和进一步的化学转化。在HL-60细胞的分化(5-10x)中,发现1个α25-二羟基-18-norvitamin D3在结合猪肠道维生素D受体(5-10x)方面比1α25-二羟基维生素D3更有效。 ,并抑制HL-60的增殖。在这些活动中,1α,25-二羟基-18、19-维生素D3的活性与1α,25-二羟基维