Novel 9-Alkyl- and 9-Alkylidene-Substituted 1α,25-Dihydroxyvitamin D<sub>3</sub> Analogues: Synthesis and Biological Examinations
作者:Urszula Kulesza、Lori A. Plum、Hector F. DeLuca、Antonio Mouriño、Rafal R. Sicinski
DOI:10.1021/acs.jmedchem.5b00795
日期:2015.8.13
Continuing the structure–activity relationship studies in the vitamin D area, we designed and synthesized novel C-9 substituted calcitriol analogues, possessing different nonpolar groups at this position. 9α-Methyl-1α,25-(OH)2D3, both epimers of 9-methylene-10,19-dihydro-1α,25-(OH)2D3 as well as the parent vitamin with the “reversed” triene system, 9-methylene-19-nor-1α,25-(OH)2D3, were obtained from
继续进行维生素D区域的结构-活性关系研究,我们设计和合成了新颖的C-9取代的骨化三醇类似物,在该位置具有不同的非极性基团。9α甲基1α,25-(OH)2 d 3,9-亚甲基10,19二氢-1α的两个差向异构体,25-(OH)2 d 3以及用“颠倒”三烯母体维生素系统,9-亚甲基-19-nor-1α,25-(OH)2 D 3,是从前维生素D的前体获得的,前体D是由Suzuki-Miyaura,Sonogashira或相应的A和C,D环片段的Stille偶联物构建的。导致后者的维生素及其与9-亚乙基的同系物的另一种合成途径涉及形成二烯作为相应的19-去甲维他命D化合物的前体。用威尔金森催化剂均相加氢制备9β-甲基-19-nor-1α,25-(OH)2 D 3,发现该类似物在体外最活跃。此外,9α-甲基-1α,25-(OH)2 D 3和9-亚甲基-19-nor-1α,25-(OH)2 D 3 尽