ABSTRACT The present invention is to provide an improved process for the preparation of highly pure Isoproterenol and pharmaceutical^ acceptable salts thereof using acid addition salts of Intermediate.

Abstract Priority: This application claims the benefit to the provisional application No. 3708/CHE/2015, filedonJulv20th.2015. The present invention provides an improved process for the preparation of triethylenetetramine di hydrochloride by alkylation reaction of diamine compound with halo acetonitrile and then p...

The present invention is to provide a new process for preparing enantiomerically pure 3-biphenyl-2-aminopropan-t-ol or (R) phenyl alanine derivatives and their conversion toN-acyl derivatives of biphenyl alanine followed by conversion toNEP inhibitors such as biaryl substituted 4-amino-butyric acid amide derivatives...

The present invention discloses a purification method of milrinone. Particularly, the invention relates to a method of purification of crude milrinone by recrystallization, thereby obtaining high pure milrinone, therefore the reaction has a potential industrial application value.

The present invention is directed to a process for the preparation of highly pure Milrinone a cardiotonic agent and it's structurally related analogs of formula (I). The process comprises reaction of l-(lower-alkoxy)-2-(4-pyridinyl) ethenyl lower-alkyl ketone of formula (II) (II) R,R1=C1-C4alkyl. with malono...

The present invention of 5-(4-methyl-lH-imidaqzol-l-yl)-3-(trifluoromethyl)-benzenamine having formula (I) and their pharmaceutical^ acceptable salts, polymorphs and crystals thereof, with high yields and purity obtained.

Abstract The present invention provides novel processes for the preparation of a lactone of Formula I, which are useful in the production of prostaglandins. The invention also provides novel enantiomerically enriched compounds.

Claims 1.  A process for the preparation of compound of formula (I) or pharmaceutical^ acceptable salt thereof, comprising the steps (A) and (B), A. conversion of compound of formula (III) to compound of Formula (II) comprising, (a) addition of 2-fluoro-4-nitro-benzoic acid of formula (III) to an organic solvent...