The present invention relates to a process for the preparation of montelukast sodium (formula 1) and formula 4. The invention concerns the coupling of thiol derivative, Methyl 1-(mercaptomethyl)cyclopropane acetate with mesylate of formula 4 compound using alkyl substituted ammonium hydroxide base, alkali amides and...

The present invention provides an improved process for the preparation of prasugrel and its pharmaceutical  acceptable  salt.  Prasugrel  chemically  known  as  2-acetoxy-5-(α-cyclopropylcarbonyl-2-fluorobenzyl)-4,5,6,7-tetrahydrothieno[3,2-c]-pyridine    or   5-[2-cyclopropyl-l-(2-fluorophenyl)-2-oxoethyl]-4,5,6,7-...