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Table 2 The DPPH scavenging ability (%) of derivatives 5a–k at 2 mg/mL

From: Synthesis and biological evaluation of the new 1,3-dimethylxanthine derivatives with thiazolidine-4-one scaffold

Compound Scavenging ability (%) Compound Scavenging ability (%)
5a 18.65 ± 0.43 5g 10.66 ± 0.19
5b 9.79 ± 0.30 5h 4.01 ± 0.24
5c 4.51 ± 0.36 5i 9.08 ± 0.13
5d 11.65 ± 0.19 5j 5.90 ± 0.24
5e 5.90 ± 0.24 5k 5.56 ± 0.19
5f 5.64 ± 0.32   
Theophylline 12.14 ± 0.20 Vitamin C a 81.62 ± 0.21
  1. a0.04 mg/mL; Data are mean ± SD (n = 3, p < 0.05)