Synthesis and structure–activity relationships of 16-ene-22-thia-1α,25-dihydroxy-26,27-dimethyl-19-norvitamin D3 analogs having side chains of different sizes
作者:Hajime Takaku、Yukiko Miyamoto、Shiori Asami、Mika Shimazaki、Sachiko Yamada、Keiko Yamamoto、Nobuyuki Udagawa、Hector F. DeLuca、Masato Shimizu
DOI:10.1016/j.bmc.2007.11.013
日期:2008.2.15
We have synthesized eight novel 16-ene-22-thia-26,27-dimethyl-19-norvitamin D3 analogs 1-5 bearing side chains of different sizes, in combination with 20S- and 20R-isomers. The target compounds were prepared by Wittig-Horner reaction of A-ring phosphine oxide with 16-ene-22-thia-25-hydroxy Grundmann's ketones having different sized side chains, which were derived from the S-phenyloxycarbonyl derivative
我们已经合成了八个带有不同大小侧链的16-ene-22-thia-26,27-二甲基-19-norvitamin D3类似物1-5,与20S和20R异构体结合在一起。通过A-环氧化膦与具有不同侧链尺寸的16-烯-22-噻-25-羟基格伦德曼酮的Wittig-Horner反应制备目标化合物,所述酮衍生自作为主要中间体的S-苯氧羰基衍生物13。研究了合成的22-thia-19-norvitamin D类似物1-5对维生素D受体(VDR)的结合亲和力,VDR介导的转录活性和破骨细胞诱导活性。就体外测试的生物学活性而言,(20S)-22-硫杂-19,24-地诺维生素D类似物1a与天然激素1α,25-二羟基维生素D3(1α,25-(OH)2D3)具有相同的活性。类似物2a和3a在与VDR的结合中表现出与1alpha,25-(OH)2D3几乎相同的效能,在转录活性方面比1alpha,25-(OH)2D