Table 4. IC₅₀ of the Target Compounds against Human Lung Fibroblast Cell Line WI38.

compound no.	IC50 in μg/mL WI38
DOX	8.87 ± 0.6
3a	28.20 ± 2.3
3b	25.27 ± 2.1
3c	64.53 ± 3.8
3d	71.21 ± 4.2
3e	41.48 ± 2.9
5a	65.68 ± 1.1
5d	49.86 ± 3.4
5e	51.67 ± 3.7
5f	43.02 ± 3.1
5g	24.86 ± 2.0
7a	54.64 ± 3.5
7b	41.35 ± 1.7
7c	51.91 ± 3.4
7d	39.49 ± 1.7
7e	27.05 ± 3.3
7f	44.50 ± 4.5
7g	30.31 ± 1.7
7h	25.34 ± 2.2
7i	19.49 ± 1.6
7j	33.76 ± 2.5