... e) H2 , Pd/C (10%), EtOH, 708, 4 h; 46%. f) HCl, EtOH, 708, 4 h; 93%. tol toluyl. Helvetica Chimica Acta ± Vol. 87 (2004) 1337 Fig. 3. Biological activity (Ki values) of the first series of TGT inhibitors Page 6. resulted in a substantial loss of activity. ...