1-[6-(4-tert-Butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-4-ethyl-piperidine-4-carboxylic acid 、
4-propylpiperidin-1-ium-4-carboxylate 、 6-(trans-4-Tert-butylcyclohexyloxy)-2-naphthaldehyde 、
溶剂黄146 、
甲醇 、
氰基硼氢化钠 以to give 16 mg 1-[6-(4-tert-Butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-4-propyl-piperidine-4-carboxylic acid (4%)的产率得到1-[6-(4-tert-Butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-4-propyl-piperidine-4-carboxylic acid