3.5.1.79 synthesis alternative chemical route in removing the phthalimido protecting group 31905 3.5.1.79 synthesis one-step synthesis of the antibiotic loracarbef 31908 3.5.1.79 synthesis selective deprotection of phthalyl protected amines 31906, 31908 3.5.1.79 synthesis synthesis of aspartame 31908 3.5.1.79 synthesis the enzyme catalyzes removal of the phthalyl group from a wide variety of phthalyl-containing compounds with improved yields over processes, exhibits stereochemical selectivity, and eliminates the need for harsh conditions to remove the protecting group 31908