How is 2-Hydroxy-5-{1-hydroxy-2-[(4-phenyl-2-butanyl)amino]ethyl}benzamide (CAS: 36894-69-6) typically synthesized?

2-Hydroxy-5-{1-hydroxy-2-[(4-phenyl-2-butanyl)amino]ethyl}benzamide is typically synthesized through a multi-step process involving the condensation of a phenyl-substituted amine and a carboxylic acid derivative. Commonly, this involves the use of an acid catalyst, such as hydrochloric acid, and the reaction is performed in an organic solvent like dichloromethane. The yield is around 70-80%, and the product is purified by recrystallization.