Patent ID: 8476470

Claim:
A process for production of a compound represented by the following general formula (4) comprising the following steps: (Step1) a step for reacting a compound represented by the following general formula (1): [in the formula (1), R 1 represents an alkyl group having 1 to 6 carbon atoms, which may have a substituent; an arylmethyl group which may have a substituent; or an arylethyl group which may have a substituent], with a compound represented by the following general formula (2): R 2 —NH 2 (2) [in the formula (2), R 2 represents an alkyl group having 1 to 6 carbon atoms, which may have a substituent; an aralkyl group which may have a substituent; a hydroxyl group; an alkyloxy group having 1 to 6 carbon atoms, which may have a substituent; or an aralkyloxy group which may have a substituent], to thus form a compound represented by the following general formula (3): [in the formula (3), R 1 and R 2 are the same as those defined above]; and (Step 2) a step for hydrolyzing the compound represented by the general formula (3) to form a compound represented by the following general formula (4): [in the formula (4), R 1 and R 2 are the same as those defined above].