4-Piperidinecarboxylic acid → [(3S,4R)-4-(4-Chloro-phenyl)-1-(5'-cyano-3,4,5,6-tetrahydro-2H-[1,2]bipyridinyl-4-carbonyl)-pyrrolidin-3-yl]-methyl-carbamic acid tert-butyl ester

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In analogy to the procedure described for the synthesis of example 1 (step f), the title compound rac-[(3S,4R)-4-(4-Chloro-phenyl)-1-(5′-cyano-3,4,5,6-tetrahydro-2H-[1,2]bipyridinyl-4-carbonyl)-pyrrolidin-3-yl]-methyl-carbamic acid tert-butyl ester was prepared from rac-[(3R,4S)-4-(4-chloro-phenyl)-pyrrolidin-3-yl]-methyl-carbamic acid tert-butyl ester instead of rac-[(3R,4S)-4-(3,4-dichloro-phenyl)-pyrrolidin-3-yl]-methyl-carbamic acid tert-butyl ester using 5′-cyano-3,4,5,6-tetrahydro-2H-[1,2′]bipyridinyl-4-carboxylic acid instead of 141-methyl-cyclopropanecarbonyl)-piperidine-4-carboxylic acid and was obtained as an orange oil. MS m/e: 524.3 [M]+.

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