Pd-mediated cross-coupling of C-17 lithiated androst-16-en-3-ol – access to functionalized arylated steroid derivatives
作者:Vanessa Koch、Stefan Bräse
DOI:10.1039/c6ob02496c
日期:——
we report on Pd-mediated cross-coupling of vinyllithium steroids and aryl bromides to introduce various substituted aryls at C-17 of steroidal frameworks based on the structure of epi-androsterone. Compared to other C–C cross-couplings, this method turned out to be an easy and competitive access to biologically interesting C-17 modified steroids.
Stille and Suzuki Cross-Coupling Reactions as Versatile Tools for Modifications at C-17 of Steroidal Skeletons - A Comprehensive Study
作者:Vanessa Koch、Martin Nieger、Stefan Bräse
DOI:10.1002/adsc.201601289
日期:2017.3.6
cross‐coupling study of steroidal vinyl (pseudo)halides with different boronic acids and tributyltin organyls. Furthermore, we have investigated the “inverse” case of those cross‐coupling reactions, i.e., the reaction of a steroidal vinylpinacolatoborane or a tributyltin steroid with various bromides. The development of both methods allows the introduction of different residues at C‐17 of steroid skeletons