Table 1.

Anti-proliferative activities NA-1 analogues.

	R	R′	SKBr3 (μM)	MCF-7 (μM)
KU-398		H	0.76±0.17a	1.09±0.10
12		OAc	0.74±0.01	1.65±0.11
14		OAc	0.88±0.09	1.88±0.45
15		OAc	0.64±0.06	0.71±0.03
16		OAc	0.62±0.04	0.82±0.07
17		H	0.64±0.06	0.71±0.03
18		H	1.30±0.63	2.64±0.45
19		H	0.60±0.01	0.79±0.10
20		H	0.92±0.56	1.55±0.04
29		H	1.01±0.03	1.20±0.12
30		H	0.82±0.02	0.93±0.21
31		H	>50	>50
32		H	>50	>50
33		H	0.72±0.01	0.99±0.04

^aValues represent mean ± standard deviation for at least two separate experiments performed in triplicate