1: 2-acetoxy-4,5,6,7-tetrahydrothieno[3,2-c]pyridine p-toluenesulfonate With sodium hydrogencarbonate in N,N-dimethyl-formamide T=5 - 10°C; 2: α-cyclopropylcarbonyl-2-fluorobenzyl bromide in N,N-dimethyl-formamide T=20°C; 5 h; 3: acetic anhydride in N,N-dimethyl-formamide T=20°C; 3 h;