Provided herein are myeloid cell leukemia 1 protein (Mcl-1) inhibitors, methods of their preparation, related pharmaceutical compositions, and methods of using the same. For example, provided herein are compounds of Formula I,
and pharmaceutically acceptable salts thereof and pharmaceutical compositions containing the compounds. The compounds and compositions provided herein may be used, for example, in the treatment of diseases or conditions, such as cancer.
Cycloadditions of Allylsilanes - Part 22.¹ Stereoselective Synthesis of Cyclopentanes and Cyclobutanes by Lewis Acid Promoted [3+2] and [2+2] Cycloadditions of Allylsilanes
作者:Hans-Joachim Knölker、Arndt Schmidt
DOI:10.1055/s-0030-1258549
日期:2010.9
Lewis acid promoted [3+2] and [2+2] cycloadditions as a novel methodology for the stereoselective construction of cyclopentanes and cyclobutanes is described. Elegant applications of this methodology to the total synthesis of biologically active terpenoid natural products are presented. 1 Introduction 2 [3+2] Cycloadditions of Allylsilanes 2.1 Synthesis of Silylbicyclo[n.3.0]alkanes 2.2 Synthesis of Silylcyclopentanes
A stereoselective total synthesis of the monoterpenoid alcohol (±)-fragranol has been accomplished utilizing a TiCl4 promoted [2 + 2] cycloaddition of allyl-tert-butyldiphenylsilane and methyl methacrylate as the key step.