... J. Heterocyclic Chem., 19, 557 (1982). ... within ±0.3% of the theoretical values and these data were determined in the microanalytical laboratory of the Pharmaceutical Chemistry Institute at ... s, H-4'), 7.5 (m, arom), 7.8 (m, arom), 10.1 (sb, COOH) 3.8 (m, S-CH2), 4.05 (dd, J = 17 Hz ...