Novel d-Annulated Pentacyclic Steroids: Regioselective Synthesis and Biological Evaluation in Breast Cancer Cells
作者:Svetlana K. Vorontsova、Anton V. Yadykov、Alexander M. Scherbakov、Mikhail E. Minyaev、Igor V. Zavarzin、Ekaterina I. Mikhaevich、Yulia A. Volkova、Valerii Z. Shirinian
DOI:10.3390/molecules25153499
日期:——
It was found that these compounds readily undergo regioselective interrupted Nazarov cyclization with trapping chloride ion and an efficient method of the synthesis of d-annulated pentacyclic steroids based on this reaction was proposed. The structures of the synthesized pentacyclic steroids were determined by NMR and X-ray diffraction. It was found that the reaction affords a single diastereomer, but
研究了基于 16-脱氢孕烯醇酮乙酸酯 (16-DPA) 的苯亚甲基的酸催化环化。发现这些化合物很容易通过捕获氯离子进行区域选择性间断 Nazarov 环化,并提出了一种基于该反应合成 d 环化五环类固醇的有效方法。合成的五环类固醇的结构通过核磁共振和X射线衍射确定。发现该反应提供了单一的非对映异构体,但后者可以根据结构结晶为两个构象异构体。针对两种乳腺癌细胞系:MCF-7 和 MDA-MB-231 评估了合成化合物的抗增殖活性。所有测试的化合物都显示出相对高的抗增殖活性。