Synthesis and Characterization of Potential Impurities of the Antimigraine Drug, Rizatriptan Benzoate
作者:P. Seetharama Sarma、C. Nageswar Rao、M. V. Surayanarayana、Padi Pratap Reddy、M. Khalilluah、Cherukupally Praveen
DOI:10.1080/00397910701798051
日期:2008.1.1
Rizatriptan benzoate is a recently developed antimigraine drug used for the treatment of migraines and severe headaches. In the synthesis of rizatriptan benzoate in bulk,various impurities are formed. The present work details the development of a simple and novel process for the preparation of hydrazone impurity (6), rizatriptan N-oxide (7), rizatriptan dimer (9), desmethyl rizatriptan (13), 5-(1H-1,2,4-triazol-1-yl-methyl)-1H-indole-3-ethanamine hydrochloride (14), N-methyl rizatriptan oxalate (15), and impurities.