Structure
Figure 2: Structure of 12-oxo (6-7) and 12-oxa (8) functionalized active Brs analogs bearing a cholanic acid skeleton and 12-oxa and 11-oxa C-functionalized (12- 14), 11-oxo-12β-hydroxy (15) and 11-oxo-12β-acetoxy (16) deoxycholic acid derivative.