ABSTRACT
Catalyzed by Lipases and Proteases.........................................................................595
23.3.1 Regioselective Esterification of Hydroxyl Groups
Located on the ‘‘A’’ Ring ........................................................................... 597
23.3.2 Regioselective Esterification of Hydroxyl Groups
Located on the ‘‘D’’ Ring or on the Side Chain .........................................598
23.3.3 Regioselective Enzymatic Alcoholysis of
