A new metabolite of Paricalcitol: stereoselective synthesis of (22Z)-isomer of 1α,25-dihydroxy-19-norvitamin D2
作者:Ramakrishna Samala、Somesh Sharma、Manas K. Basu、K. Mukkanti、Frank Porstmann
DOI:10.1016/j.tetlet.2016.01.110
日期:2016.3
Stereoselective synthesis of (22Z)-isomer of Paricalcitol, an analog of 1,25-dihydroxyergocalciferol, an active form of vitamin D2 (Ergocalciferol) has been described. The two key critical synthetic steps involved are Julia–Lythgoe’s Wittig–Horner coupling of aldehyde functionality of CD-ring system with benzothiazolyl sulfone, and Horner–Wadsworth–Emmons reaction of phosphine oxide with a Windaus–Grundmann’s
已经描述了Paricalcitol的(22 Z)-异构体的立体选择性合成,它是1,25-二羟基麦角钙化醇的一种类似物,是维生素D 2(Ergocalciferol)的一种活性形式。涉及的两个关键的关键合成步骤是Julia-Lythgoe的CD环系统的醛官能团与苯并噻唑基砜的Wittig-Horner偶联,以及氧化膦与Windaus-Grundmann的酮的Horner-Wadsworth-Emmons反应在两相之间建立二烯基序Paricalcitol的CD环系统。