... with 3 and were found to possess no muscle-relaxing effect, indicating that the presence of both the “isopropylsulfori~,l” and “N-isopropyl” groups is probably responsible for the activity of 3. Chemistry.-Synthesis of the ... 10 I1 P 5,5 150-152 EtOIl L, Clr,II,,NO1S c, 11, T, s ...