1: 2-amino-benzenethiol With 4-methoxytrityl resin chloride; N-ethyl-N,N-diisopropylamine in dichloromethane
T=20°C;
2: acetic acid With diisopropyl-carbodiimide in N,N-dimethyl-formamide
T=20°C; 3 h;
3: With triethylsilane; trifluoroacetic acid in dichloromethane
Title compound not separated from byproducts;
