NOVEL STEROID PRODUCTS COMPRISING, IN POSITION 23, A DIHYDRO OXAZOLYL RADICAL, THEIR PROCESS OF PREPARATION, THEIR APPLICATION TO THE PREPARATION OF PRODUCTS OF THE SERIES OF THE CETOPREGNANES AND INTERMEDIATES THEREOF

摘要

The subject of the invention is the products of the formula: embedded image in which RH or CH, R CH or CH, R, and RH or ALK C. / P P A, B, C, D DIFFERENTLY HAVE ONE OR MORE DOUBLE CONNECTIONS, ONE OR MORE OH FUNCTIONS, CO POSSIBLY PROTECTED, ONE OR MORE HALOGENES, ONE OR MORE RADICALS ALK, ALKOXY C, ALKENYL OR ALKNYNYL C. THE POINTILLE TREATMENT REPRESENTS A POSSIBLE DOUBLE BINDING, THEIR PROCESS OF PREPARATION, THEIR APPLICATION TO THE PREPARATION OF 20 CETOPREGNANES AND THE INTERMEDIATES. / P