| http://www.w3.org/ns/prov#value | - When the quinoline-4-carboxylic acid (L=OH) of formula (2) contains an active group such as a hydroxyl group or an amino group, the active group is protected in advance with a protective group, and deprotection is conducted after the production of quinoline-4-carbonylguanidine by the above-mentioned process, whereby the final quinoline-4-carbonylguanidine derivatives of formula (1) can be obtained
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