87269-88-3Relevant academic research and scientific papers
PROCESS FOR THE PREPARATION OF RAMIPRIL
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Page/Page column 51; 52, (2016/01/01)
An enantioselective process for the production of (2S,3aS,6aS)-cyclopenta[b]pyrrole-2-carboxylic acid and its conversion into Ramipril is provided.
A METHOD FOR PREPARING RAMIPRIL
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, (2015/04/15)
Enantio-specific synthesis of optically pure (2S)-acetylamino-3-(2-oxo-cyclopentyl)- propionic acid (I) comprising converting enantiomeric mixture of (1 -4C alkyl)-2- acetylamino-3-(2-oxocyclopentyl) propionoate (II) (+ and -) under the influence of an Alkaline serine endopeptidase is disclosed. The invention further describes use of optically pure (2S)-acetylamino-3-(2-oxocyclopentyl)-propionic acid (I) formed by the process of present invention, in the preparation of Ramipril.
PROCESS FOR THE PREPARATION OF AMIDES OF N-[1-(S)-(ETHOXYCARBONYL)-3-PHENYLPROPYL]-L-ALANINE
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Page/Page column 19; 20, (2015/01/07)
A process for the production of amides of N-[1-(S)-(ethoxycarbonyl)-3-phenylpropyl]-L-alanine is described. The process can be used for the production of key intermediates and finally the ACE inhibitors such as Ramipril, Enalapril, Quinapril, Trandolapril, Delapril and Moexipril starting from N-[1-(S)-(ethoxycarbonyl)-3-phenylpropyl]-L-alanine by the reaction with the appropriate amines.
METHOD FOR THE SYNTHESIS OF A RAMIPRIL INTERMEDIATE
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Page/Page column 12-13, (2010/05/14)
The present invention relates to a process for the preparation of octahydrocyclopenta[b]pyrrole-2-carboxylic acid and esters thereof of general formula (1) in the presence of a cobalt and/or nickel comprising catalyst and to the use of compounds of general formula (1) in the synthesis of ramipril.
NOVEL CARBAMOYLGLYCINE DERIVATIVES
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Page/Page column 14-15, (2009/05/28)
The present invention relates to carbamoylglycine derivatives, a process for the preparation of carbamoylglycine derivatives and the use of carbamoylglycine derivatives in the preparation of enantiomerically enriched α-amino acids. Furthermore, the present invention relates to the preparation of pharmaceutically active products such as perindopril and ramipril using the novel carbamoylglycine derivatives.
NOVEL CYCLOALKANONE β-SUBSTITUTED ALANINE DERIVATIVES
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Page/Page column 9, (2009/10/09)
The present invention relates to cycloalkanone β-substituted alanine derivatives, a process for the preparation of cycloalkanone β-substituted alanine derivatives and the use of cycloalkanone β-substituted alanine derivatives in the preparation of enantiomerically enriched α-amino acids. Furthermore, the present invention relates to the preparation of pharmaceutically active products such as perindopril and ramipril using the novel cycloalkanone β-substituted alanine derivatives.
METHOD FOR THE PRODUCTION OF RAMIPRIL
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Page/Page column 7, (2009/01/24)
An improved method for preparing ramipril is disclosed, and also an intermediate for use in the method.
A PROCESS FOR PREPARATION OF RAMIPRIL
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Page/Page column 13, (2009/10/30)
Disclosed herein is a process for preparation of Ramipril; which comprises; reacting salts of (S,S,S)-azabicyclo[3.3.0]-octane-3-carboxylate with N-[l-(S)-ethoxy carbonyl)-3- phenyl propyl] -L-alanine in presence of dicyclohexylcarbodimide (DCC) and 1- hydroxybenzotriazole (HOBT) in a suitable solvent medium.
NOVEL 5-SUBSTITUTED HYDANTOINS
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Page/Page column 19, (2009/01/24)
The present invention relates to 5-substituted hydantoins, a process for the preparation of 5-substituted hydantoins and the use of 5-substituted hydantoins in the preparation of enantiomerically enriched α-amino acids. Furthermore, the present invention relates to the preparation of pharmaceutically active products such as perindopril and ramipril using the novel 5-substituted hydantoins.
Expeditious synthesis of ramipril: An angiotensin converting enzyme (ACE) inhibitor
Malakondaiah, Golla China,Gurav,Reddy, Lekkala Amarnath,Babu, Karrothu Srihari,Bhaskar, Bolugoddu Vijaya,Reddy, Padi Pratap,Bhattacharya, Apurba,Anand, Ramasamy Vijaya
, p. 1737 - 1744 (2008/09/21)
We document an efficient and cost-effective synthesis of ramipril 1 utilizing (i) an environmentally benign process for the esterification of racemic 2-aza-bicyclo-[3.3.0]-octane-3-carboxylic acid hydrochloride 2 using boric acid as a catalyst and (ii) a robust resolution process for the synthesis of 3a by means of inexpensive and recyclable L-(+)-mandelic acid as key steps. Copyright Taylor & Francis Group, LLC.
