Carbonic acid 4-nitro-phenyl ester (R)-2,2,2-trifluoro-1-methyl-ethyl ester → (R)-4-[(R)-5-(1-Methanesulfonyl-1,2,3,6-tetrahydro-pyridin-4-yl)-2-methyl-2,3-dihydro-furo[2,3-c]pyridin-2-yl]-piperidine-1-carboxylic acid 2,2,2-trifluoro-1-methyl-ethyl ester

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Reaction Steps

The title compound is prepared from (R)-5-(1-methanesulfonyl-1,2,3,6-tetrahydro-pyridin-4-yl)-2-methyl-2-piperidin-4-yl-2,3-dihydro-furo[2,3-c]pyridine and carbonic acid 4-nitro-phenyl ester (R)-2,2,2-trifluoro-1-methyl-ethyl ester following a procedure analogous to that described for Example 1. LC (method 4): tR=0.92 min; Mass spectrum (ESI+): m/z=518 [M+H]+.

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