| http://www.w3.org/ns/prov#value | - The activation for the compound represented by the formula (xiv) or a salt thereof can be carried out in a solvent using about 1 to 10 equivalents, preferably about 1 to 5 equivalents of a halogenating agent such as thionyl chloride, phosphorous trichloride, phosphorous pentachloride, phosphorous tribromide, phosphorous pentabromide, carbon tetrabromide-triphenylphosphine and the like, or using ab
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