Table 2.

Antiproliferative activities of the tested monoterpene analogs.

Analog	Conc. (µM)	Inhibition (%) ± SEM [Calculated IC50 Value (µM)]
		HeLa	A2780	MCF7	MDA-MB-231
3	10	29.83 ± 1.65	96.66 ± 0.23	35.07 ± 2.64	19.06 ± 2.98
	30	98.46 ± 0.08	96.60 ± 0.37	93.00 ± 0.68	84.58 ± 1.87
		[12.23]	[1.44]	[12.37]	[16.47]
4	10	37.96 ± 2.20	96.28 ± 0.32	49.99 ± 0.80	33.33 ± 1.94
	30	98.17 ± 0.19	96.82 ± 0.18	96.08 ± 0.52	89.95 ± 0.90
		[11.46]	[1.91]	[10.02]	[13.02]
5	10	21.94 ± 2.94	91.95 ± 0.26	28.62 ± 1.98	20.31 ± 1.45
	30	96.31 ± 0.33	93.77 ± 0.27	85.27 ± 1.84	58.06 ± 1.75
		[13.62]	[2.05]	[14.54]	[24.28]
6	10	– *	56.80 ± 3.18	17.30 ± 1.74	19.61 ± 2.23
	30	47.39 ± 2.99	93.34 ± 0.69	23.87 ± 2.37	29.68 ± 2.54
7	10	–	15.35 ± 1.79	19.80 ± 1.99	–
	30	24.18 ± 2.42	36.92 ± 1.39	23.44 ± 1.86	24.66 ± 1.38
8	10	–	12.18 ± 1.70	14.62 ± 2.49	11.71 ± 0.74
	30	12.31 ± 2.25	36.58 ± 1.38	35.75 ± 2.79	20.27 ± 2.62
9	10	–	–	–	11.45 ± 2.75
	30	10.83 ± 2.40	34.56 ± 1.83	–	21.57 ± 1.69
10	10	–	17.93 ± 1.06	–	11.43 ± 1.68
	30	26.01 ± 0.74	48.27 ± 0.64	44.00 ± 1.34	24.67 ± 2.13
11	10	12.36 ± 1.23	–	–	–
	30	13.41 ± 1.87	28.44 ± 0.92	25.32 ± 1.10	10.36 ± 2.14
12	10	–	–	–	15.51 ± 2.77
	30	–	31.13 ± 2.48	–	15.92 ± 2.69
13	10	–	11.76 ± 0.76	–	–
	30	–	48.66 ± 1.97	–	18.81 ± 2.59
14	10	–	–	–	–
	30	–	29.12 ± 2.32	14.46 ± 2.31	16.28 ± 1.85
cisplatin	10	42.61 ± 2.33	83.57 ± 1.21	53.03 ± 2.29	67.51 ± 1.01
	30	99.93 ± 0.26	95.02 ± 0.28	86.90 ± 1.24	87.75 ± 1.10
		[12.43]	[1.30]	[5.78]	[3.74]

* Growth inhibition values less than 10% are considered negligible and not given numerically.