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S. No. Y Mol. Formula(Sol. ofrecryst.)IIIviOCH 3 C 19 H 18 N 4 O 4 S 2(C-M)IIIviiIIIviiiIIIixOOSSSH C 16 H 14 N 4 OS 2(C-M)OCH 3 C 17 H 16 N 4 O 2 S 2(C-M)H C 20 H 14 N 4 OS 2(C-M)M.P ( o C) IR (cm -1 )(KBr)257-260 3247(γ NH ),2985(γ C-H ),1690(γ CONH ),650(γ C-S )272-275 3263(γ NH ),2917(γ C-H ),1669(γ CONH ),605(γ C-S )130-134 3306(γ NH ),2966(γ C-H ),1683(γ CONH ),601(γ C-S )224-227 3044(γ C-H ),1680(γ CONH ),741(γ C-S )Mass(m/e)430(M + ),397,369, 180NMR (δppm)(DMSO-d 6 )Part-IResults and Discussion1.38 (3H, t, CH 3 of CH 3 -CH 2 -O-, J = 6), 2.67 (3H, s, CH 3 at 5),3.84 (3H, s, OCH 3 ), 4.20-4.38 (4H, m, CH 3 -CH 2 -O and SCH 2 ),6.82 (1H, dd, CH at Imidazole J = 6.8 & 2.04); 7.03 (1H, s, CH atimidazole), 7.42 (1H, d, CH at imidazole), 10.84 (1H, br s, NH),12.94 (1H, br s, NH)-- --368(M + ),339, 180390(M + ),357,272, 1502.38 (3H, s, CH 3 at 5), 2.47 (3H, s, CH 3 at 6), 3.80 (3H, s, OCH 3 ),4.27 (2H, s, CH 2 at SCH 2 ), 6.77-6.80 (3H, m, Ar-H), 10.19 (1H, s,NH), 13.25 (1H, s, NH)4.39 (2H, s, CH 2 at SCH 2 ), 7.10 (1H, s, H at 6), 7.16-7.54 (9H, m,Ar-H), 12.60 (1H, s, NH), 13.78 (1H, s, NH)IIIxSOCH 3 C 21 H 16 N 4 O 2 S 2(C-M)165-170 3091(γ NH ),2988(γ C-H ),1685(γ CONH ),620(γ C-S )420(M + ),387,256, 1803.82 (3H, s, OCH 3 ), 4.36 (2H, s, CH 2 at SCH 2 ), 6.81 (1H, dd, CHat Imidazole, J = 6.44 & 2.36), 7.11 (1H, s, CH at 6), 7.01-7.56(7H, m, Ar-H), 11.90 (1H, s, NH), 13.30 (1H, s, NH)IIIxiOSH C 21 H 16 N 4 O 2 S 2(C-M)244-248 3256(γ NH ),2839(γ C-H ),1663(γ CONH ),746(γ C-S )421(M + ),387,359, 1593.82 (3H, s, OCH 3 ), 4.43 (2H, s, CH 2 at SCH 2 ), 6.84 (2H, d, H atimidazole, J = 8.6), 7.08 (1H, s, H at 7), 7.17 (2H, q, H atimidazole, J = 3.16), 7.47-7.52 (4H, m, Ar-H), 12.40 (1H, s, NH),13.25 (1H, s, NH)S87