Milverine (Fenprin, Fenpyramine, Miospasm) is a spasmolytic (antispasmodic) agent that was developed in the latter half of the 20th century.
The therapeutic use of fenpyramin as a platelet-antiaggregating and antithrombotic as well as vasodilating and antianginous medicine was also identified.
Milverine is a bifunctional molecule; one half of the molecule contains 3,3-Diphenylpropylamine and the other half of the molecule contains fampridine.
Synthesis The chemical synthesis of milverine was identified.
Conjugate soft addition of benzene to cinnamic acid [140-10-3] (1) gives 3,3-diphenylpropionic acid [606-83-7] (2). Halogenation with thionyl chloride gives 3,3-diphenylpropionyl chloride [37089-77-3] (3). Schotten-Baumann reaction with 4-aminopyridine (Fampridine) [504-24-5] (4) gives 3,3-diphenyl-N-(4-pyridyl)propionamide [75437-13-7] (5). The last step involves reduction of the amide bond giving milverine (6), respectively.
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