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K. Niknam et al. / Chinese Chemical Letters 21 (2010) 399–402
144.63, 149.56, 153.04, 166.68. MS (m/z %): 414 [M+] (1.50), 368 (59.39), 349 (base peak), 313 (29.32), 273 (27.06),
236 (33.08), 169 (63.15), 137 (29.32), 111 (30.82), 97 (56.39), 83 (65.41), 69 (72.18), 57 (93.98), 43 (84.96). Anal.
Calcd for C20H22N4O6: C: 57.96; H: 5.35; N: 13.51; Found, C: 57.70; H: 5.20; N: 13.33. Compound 7d: IR (KBr):
3314, 3227, 1697 cmÀ1. 1H NMR (500 MHz, DMSO-d6): d 2.24 (s, 6H), 3.54 (s, 6H), 5.11 (s, 2H), 7.13 (s, 2H), 7.15 (s,
1H), 7.29 (t, 1H, J = 7.5 Hz), 7.73 (s, 1H), 7.76 (s, 1H), 9.20 (d, 2H, J = 9.19 Hz). 13C NMR (125 MHz, DMSO-d6): d
18.61, 18.63, 51.56, 54.58, 54.69, 124.76, 124.82, 126.06, 129.45, 145.75, 145.89, 149.38, 149.44, 153.01, 166.58. MS
(m/z %): 414 [M+] (42.51), 382 (16.53), 349 (33.07), 339 (34.64), 323 (26.77), 245 (22.83), 169 (base peak), 137
(73.22), 110 (11.02), 96 (8.66), 42 (20.47). Anal. Calcd for C20H22N4O6: C: 57.96; H: 5.35; N: 13.51; Found, C: 57.67;
H: 5.18; N: 13.31. Compound 7e: IR (KBr): 3398, 3230, 1695 cmÀ1. 1H NMR (500 MHz, DMSO-d6): d 2.11 (s, 6H),
2.30 (s, 6H), 5.22 (s, 2H), 7.19 (s, 4H), 7.75 (s, 2H), 9.14 (s, 2H). 13C NMR (125 MHz, DMSO-d6): d 19.77, 31.25,
54.36, 54.41, 127.42, 130.78, 144.29, 148.93, 152.98, 195.03. MS (m/z %): 382 [M+] (3.14), 368 (26.77), 349 (59.05),
313 (24.40), 273 (14.96), 258 (25.98), 236 (31.49), 169 (11.81), 153 (29.92), 111 (29.13), 99 (66.14), 83 (59.84), 71
(65.35), 57 (98.42), 43 (base peak). Anal. Calcd for C20H22N4O4: C: 62.81; H: 5.79; N: 14.65; Found, C: 62.63; H:
5.63; N: 14.34. Compound 5. 1H NMR (300 MHz, DMSO-d6): d 1.93–2.49 (m, 12H), 5.05–5.11 (m, 2H), 7.01–7.19
(m, 4H), 7.69 (s, 2H), 9.45 (s, 2H).
Acknowledgment
We are thankful to the Persian Gulf University Research Council for the partial support of this work.
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