Table 3. Cytotoxicity of compounds 2–4 against human tumour cell lines.

Compound	IC50 (μM)
	MCF-7	U937	SH-SY5Y	HepG2	SW480	A549
2	9.89 ± 0.41	1.38 ± 0.18	44.41 ± 1.42	>100	22.66 ± 1.22	>100
3	11.59 ± 0.23	6.49 ± 0.41	47.62 ± 0.81	>100	24.82 ± 1.85	>100
4	10.47 ± 0.44	2.19 ± 0.074	73.47 ± 1.62	>100	41.18 ± 2.3	>100
Taxol	0.0152	0.0553	0.454	1.562	1.845	1.512