Stille–Heck Coupling Sequences Applied in a Versatile New Access to Steroid Skeletons
作者:Hans Wolf Sünnemann、Anja Hofmeister、Jörg Magull、Armin de Meijere
DOI:10.1002/chem.200601240
日期:2007.4.27
an interesting 7-carboxyl-substituted steroidal dienone. Attempts to remove the remaining protecting groups from some of the other new steroidal compounds under acidic conditions furnished a novel 3-oxo-7-carboxyl steroidanalogue and a 3-hydroxy-substituted steroidal diene. A novel estradiol derivative could be obtained in 69% yield from the synthesized steroidal dienone. Deprotection furnished the