3.2. Specific and regioselective enzymatic hydrolysis of
peracetylated N-acetyl-β-d-glucosamine (2)
Immobilized ANL was the most active catalyst towards 2,
being more than 300 times more active than CAL-A and CALB
and more than 50,000 times compared with immobilized AOL
and RML (Table 3).
In general the lipases were less active against 2 than 1 due to
the presence of the acetamido group in the position 2 and also the
regioselectivity was affected (Tables 2 and 3). For example, the
activity of PFL decreased almost 30 times. CAL-A and CAL-B
were two exceptions, the specific activity slightly increased in
the hydrolysis of 2 (Tables 2 and 3).