Figure legend. Synthesis of 5-Amino-2-hydroxy-benzoic acid 4-(5-thioxo-5H-[1,2]dithiol-3-yl)-phenyl ester (5-ASA-ADT, 4). Reaction conditions (yield): a, sulfur, DMF, reflux (13%); b, di-tert-butyl dicarbonate, triethylamine, dioxane/water (2/1), 0

1
Supplemental Figure 1.

• Figure legend. Synthesis of
  5-Amino-2-hydroxy-benzoic acid 4-(5-thioxo-5H-1,2
  dithiol-3-yl)-phenyl ester (5-ASA-ADT, 4).
  Reaction conditions (yield) a, sulfur, DMF,
  reflux (13) b, di-tert-butyl dicarbonate,
  triethylamine, dioxane/water (2/1), 0C (80) c,
  ADT-OH (2), DCC/HOBt, 0C for 3h and then rt for
  72 h d, 40 TFA in DCM, rt (40 for two steps).
  Abbreviations DMF, dimethylformamide DCC,
  N,N'-dicyclohexylcarbodiimide HOBt,
  1-hydroxybenzotriazole TFA, trifluoroacetic
  acid DCM, dichloromethane.