(11β, 16β) -21- production of (acetyl-oxy) -11-hydroxy-2'-methyl -5'H- pregna-1,4-Jieno 17,16-D oxazole-3,20-dione

摘要

(57) Abstract (11 and 16) the -11,21- jihidorokishi -2'- methyl -5'H- pureguna -1,4- jieno [17,16-d] okisazoru -3,20- dione in the organic solvent which is suited manufacturing method of the chemical compound (11 and 16) -21- (acetyl oxy) -11- hydroxy -2'- methyl -5'H- pureguna -1,4- jieno [17,16-d] okisazoru -3,20- dione (dehurazakoruto) which includes the fact that it reacts with the acetic anhydride in the basic catalyst and under existing of the water.