| http://www.w3.org/ns/prov#value | - in a solvent, for example dichloromethane, in the presence of one or more activators, for example 1-hydroxy-7-azabenzotriazole (HOAT) and 1-[3-(dimethylaminopropyl)-3-ethyl]carbodiimide (EDCI) hydrochloride, at a temperature close to room temperature, for 2 to 50 hours, to give a compound of the formula in which:
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