The present invention relates to a novel process for the preparation of almotriptan and pharmaceutically acceptable salts thereof, which affords product conveniently and efficiently with commercially acceptable yields and purity. The present invention also relates to a novel synthetic intermediate used in the process.
The present invention relates to a novel process for the preparation of almotriptan and pharmaceutically acceptable salts thereof, which affords product conveniently and efficiently with commercially acceptable yields and purity. The present invention also relates to a novel synthetic intermediate used in the process.
The synthesis of 5-(sulfamoylmethyl)indoles bearing a two-carbon chain at C-3 (aminoethyl, acetate, hydroxyethyl, ethyl) either by the Grandbeg modification of the Fischer indolization or by intramolecular Heck reaction of suitable o-halotrifluoroacetanilides is reported. (C) 2001 Elsevier Science Ltd. All rights reserved.