Thiourea and thiosemicarbazide derivatives: Structure, transformations, and pharmacological activity. Part II. Antihypoxic activity of 1, 2, 4-triazino [5, 6-b] indole …
R 1= H, R 3= Et (V); R l= H, R 3= Pr (VI); RI= H, R 3= Bu (VII);-R 1= H, R 3= CH2-CH= CH2 (VIII); R l= H, R 3= CH (Ph) COPh (IX); R 1= H, R 3= CH2COOH (X); RZ= H, R 3= CH2COOEt (XI); R l= H, R 3= CH2CONH 2 (XII); R 1= H, R 3= CH2CONHCH2Ph (XIII); RI= H, R 3= CH2CONH (CH2)-2OH (XIV); R 1= H, R 3= CH~ _CONEt2 (XV); R 1--H, R 3= CH2CON (Bu- i) 2 (XVI); R 1= H, R"~= CH2CON (CH2CH2OH) 2 (XVII);