| http://www.w3.org/ns/prov#value | - Alternatively, the corresponding compound of formula (IIA) may be subjected to nitrile hydrolysis, using standard methods, followed by protection of the reactive hydroxy/carboxyl groups to form the corresponding protected ester of formula (IIB): wherein P is a protecting group, preferably tert-butyldimethylsilyl chloride (TBDMS);
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