| http://www.w3.org/ns/prov#value | - After washing with water, the organic phase including the desired compound is separated, dried over anhydrous sodium sulfate or the like, and then the desired compound can be obtained by evaporation of the solvents. [0191] The compound obtained is, if necessary, purified by conventional methods, such as recrystallization, silica gel column chromatography and the like. [0192] (Process A-4) [0193] A
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