Yield given. Multistep reaction;

Multi-step reaction with 4 steps 1: 60 percent / ethanol; H2O / 25 h / Heating2: hydrogen / platinum / methanol; ethyl acetate3: 85 percent / p-toluenesulfonic acid / CH2Cl2; tetrahydrofuran / 24 h4: 92 percent / 4-dimethylaminopyridine / tetrahydrofuran / 24 h  

Multi-step reaction with 5 steps 1: 1.) sodium ethoxide, 2.) hydrochloric acid / 1.) ethanol, reflux, 5 min, 2.) water2: 60 percent / ethanol; H2O / 25 h / Heating3: hydrogen / platinum / methanol; ethyl acetate4: 85 percent / p-toluenesulfonic acid / CH2Cl2; tetrahydrofuran / 24 h5: 92 percent / 4-dimethylaminopyridine / tetrahydrofuran / 24 h