116169-90-5Relevant articles and documents
Method for preparing lisinopril intermediate
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Paragraph 0041; 0042, (2017/07/21)
The invention provides a method for preparing a lisinopril intermediate. The method comprises the following steps: treating (R)-2-hydroxy-4-phenylbutyrate in an organic solvent in the presence of alkali by using sulfonyl chloride so as to obtain a sulfonate solution; and reacting with trifluoroacetyllysine salt in the solution prepared in the previous step, separating after the reaction is ended, thereby obtaining N2-[1-(S)-alkoxycarbonyl-3-phenylpropyl]-N6-trifluoroacetyl-L-lysine. The method for preparing the lisinopril intermediate, provided by the invention, is short in synthetic route, simple and convenient in operation, low in cost and suitable for industrialized production.
METHOD FOR PURIFYING N2-(1(S)-ETHOXYCARBONYL-3-PHENYLPROPYL)-N6-TRIFLUOROACETYL-L-LYSINE
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Page 8-17, (2008/06/13)
A process for purifying N2-(1(S)-ethoxycarbonyl-3-phenylpropyl)-N6-trifluoroacetyl-L-lysine which comprises subjecting N2-(1(S)-ethoxycarbonyl-3-phenylpropyl)-N6-trifluoroacetyl-L-lysine contaminated with impurities to crystallization from a solvent comprising a water-soluble non-protic organic solvent, thereby removing the impurities into the mother liquor and giving crystals of N2-(1(S)-ethoxycarbonyl-3-phenylpropyl)-N6-trifluoroacetyl-L-lysine, according to which N2-(1(S)-ethoxycarbonyl-3-phenylpropyl)-N6-trifluoroacetyl-L-lysine having a high quality can be obtained in a high yield and a high productivity and which is suitable for practice on an industrial scale.
N2 -carboxy-3-phenylpropyl)-l-lysine derivative and process of producing lysinolpril using the compound
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, (2008/06/13)
An N2 -(1-substituted-3-phenylpropyl)-L-lysine derivative is disclosed and is represented by formula (I) STR1 wherein R1 represents an acyl type or urethane type protective group; R2 represents a hydrogen atom, an alkyl group, or an aralkyl group. X represents a cyano (CN) group or an aminocarbonyl (CONH2) group; and the mark * represents the (S) position to the asymmetric carbon atom.