| http://www.w3.org/ns/prov#value | - For example, where the protecting group P is acetate, the transformation may conveniently be effected by treatment of the cinnoline derivative with a base as defined hereinbefore and including ammonia, and its mono and di-alkylated derivatives, preferably in the presence of a protic solvent or co-solvent such as water or an alcohol, for example methanol or ethanol.
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