Ma. Dineva et al., PHENYLACETYL GROUP AS ENZYME-CLEAVABLE AMINOPROTECTION OF PURINE NUCLEOSIDES, Bioorganic & medicinal chemistry letters, 3(12), 1993, pp. 2781-2784
N6-Phenylacetyl-2'-deoxyadenosine and N2-Phenylacetyl-2'-deoxyguanosin
e are readily deprotected in reactions catalyzed by free and immobiliz
ed penicillin amidase at pH 7.8 and 25-degrees-C.