1: 2-(3-methoxy-phenyl)-ethylamine; 4-formyl-3,5-dimethoxyphenoxy-Merrifield resin With sodium tris(acetoxy)borohydride in acetic acid; N,N-dimethyl-formamide T=20°C; Solid phase reaction; reductive amination; 69 h; 2: butyric acid With benzotriazol-1-ol; dicyclohexyl-carbodiimide in N,N-dimethyl-formamide T=20°C; Solid phase reaction; acylation; 15 h; 3: With dimethylsulfide; water; trifluoroacetic acid in dichloromethane T=20°C; Solid phase reaction; cleavage of amide; 15 h;

triethylamine in dichloromethane 2 h; Ambient temperature;

triethylamine in dichloromethane 1 h; Heating; Yield given;