98677-37-3Relevant articles and documents
PROCESS FOR THE PREPARATION OF AMIDES OF N-[1-(S)-(ETHOXYCARBONYL)-3-PHENYLPROPYL]-L-ALANINE
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Page/Page column 22, (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.
A METHOD FOR THE PREPARATION OF (2S, 3AR, 7AS)-OCTAHYDRO-1H-INDOLE-2-CARBOXYLIC ACID AS KEY INTERMEDIATE IN THE PREPARATION OF TRANDOLAPRIL BY REACTING A CYCLOHEXYL AZIRIDINE WITH A DIALKYL MALONATE
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Page/Page column 21-22, (2010/02/12)
A method for the synthesis of a compound of formula (I) as a mixture of enantiomers, formula (I) (wherein R1 is H or an acid protective group and H+A- indicates an optional acid with which the compound of formula (I) may form an ammonium salt) said method comprising; A) reacting a cyclohexyl aziridine with a dialkyl malonate, whereby to provide a trans-fused 3-alkylcarbonyl-octahydro-indol-2-one; B) decarbonylation at the 3-position, conversion of the ketone of the resulting trans-octahydro-indol-2-one to an optionally protected carboxylic acid group; and C) optionally removing any N-substitution if necessary.