Transformed steroids. 104. The preparation of [16,17]oxazolidinones of 20-ketosteroids by intramolecular isomerization of 16,17?-N-carboethoxyepiminopregnenolone
Transformed steroids. 104. The preparation of [16,17]oxazolidinones of 20-ketosteroids by intramolecular isomerization of 16,17?-N-carboethoxyepiminopregnenolone