Syntheses of compounds 5 and 6 The solution of GSI-IX in vitro compound 4 (10 mmol) in absolute ethanol was refluxed learn more with appropriate aldehyde (10 mmol) for 6 h. Then, the reaction content was allowed to cool to room temperature, and a solid appeared. This crude product was filtered off and recrystallized from ethanol to obtain the desired compound. N-(4-Bromobenzylidene)-2-[6-(morpholin-4-yl)pyridin-3-ylamino]acetohydrazide S63845 ic50 (5) Yield (3.43 g, 82 %); m.p. 163–164 °C; IR (KBr, ν, cm−1): 3,307 (2NH), 1,687 (C=O), 1,590 (C=N), 1,121 (C–O); 1H NMR (DMSO-d 6, δ ppm): 3.20 (brs, 4H, N–2CH2), 3.73 (brs, 4H, O–2CH2), 4.20 (brs, 2H, CH2), 6.73 (d, 1H, arH, J = 8.6 Hz), 6.99–7.12 (m, 1H, NH), 7.60 (d, 6H, arH, J = 6.2 Hz), 8.91 (s, 1H, N=CH), 11.58 (s, 1H, NH); 13C NMR (DMSO-d 6, δ ppm): 45.93 (CH2), 56.72 (N–2CH2),

66.61 (O–2CH2), arC: [123.20 (C), 124.90 (C), 129.66 (CH), 130.01 (CH), 130.73 (CH), 130.98 (2CH), 132.51 (2CH), 136.25 (C), 138.16 (C)], 132.62 (N=CH), 166.12 (C=O); LC–MS: m/z (%) 418.66 [M]+ (78), 265.12 (28); Anal.calcd (%) for C18H20BrN5O2: C, 51.69; H, 4.82; N, 16.74. Found: C, 51.60; H, 4.75; N, 16.80. 2-[6-(Morpholin-4-yl)pyridin-3-yl]amino-N-(3-phenylallylidene)acetohydrazide (6) Yield (3.18 g, 87 %); m.p. 194–195 °C; IR (KBr, ν, cm−1): out 3,208 (2NH), 1,666 (C=O), 1,554 (C=N), 1,120 (C–O); 1H NMR (DMSO-d 6, δ ppm): 3.19 (brs, 4H, N–2CH2), 3.67 (brs, 4H, O–2CH2), 4.08 (d, 2H, CH2, J = 5.2 Hz), 5.46 (s, 1H, CH), 6.69 (d, 1H, CH, J = 8.2 Hz), 6.99 (d, 3H, arH+NH, J = 3.2 Hz), 7.35 (d, 3H, arH, J = 7.4 Hz), 7.61 (brs, 3H, arH), 7.91 (s, 1H, NH), 11.42 (s, 1H, NH);

13C NMR (DMSO-d 6, δ ppm): 47.48 (CH2), 56.72 (N–2CH2), 66.75 (O–2CH2), arC: [125.83 (CH), 126.20 (CH), 127.76 (CH), 129.53 (CH), 132.51 (CH), 136.56 (C), 138.42 (CH), 139.62 (CH), 146.75 (CH), 153.22 (C), 167.52 (C)], 108.98 (CH), 123.84 (CH), 149.48 (N=CH), 172.00 (C=O); LC–MS: m/z (%) 365.66 [M]+ (75), 265.46 (56), 165.23 (90); Anal.calcd (%) for C20H23N5O2: C, 65.74; H, 6.34; N, 19.16. Found: C, 65.82; H, 6.36; N, 19.22. Synthesis of compound 7 Compound 4 (10 mmol) and CS2 (6.0 mL, 10 mol) were added to a solution of KOH (0.56 g, 10 mol) in 50 mL H2O and 50 mL ethanol. The reaction mixture was refluxed for 3 h. After evaporating in reduced pressure to dryness, a solid was obtained. This was dissolved in 300 mL H2O and acidified with conc.