Patent ID: 8173815

Claim:
A process for preparing biphenyl-2-ylcarbamic acid 1-(2-{[4-(4-carbamoylpiperidin-1-ylmethyl)benzoyl]methylamino}ethyl)piperidin-4-yl ester, the process comprising: reacting a compound of formula IX: with a compound of formula VII: in the presence of a reducing agent; wherein a, b and c each represent 0; W represents O; m is 0; R 4 is methyl; s is 0; t is 1; Ar 1 represents phen-1,4-ylene; d is 0; n is 2; p is 0; the —CONR 7 R 8 group is in the para position; R 7 is hydrogen; and R 8 is hydrogen.