Przemysl Chemiczny, Vol.91, No.3, 296-301, 2012
Advantages and disadvantages syntheses of loteprednol etabonate
Three known methods for synthesis of CICH2-17 alpha-ethoxycarbonyloxy-11 beta phydroxy-3-oxoandrosta-1,4-diene-17 beta-carboxylate (I) by conversion 11 beta,17 alpha-dihydroxy-3-oxoandrosta-1,4-diene-17 beta-carboxylic acid (many variants) were exptl. tested and compared to develop a new technol. for prodn. of I.