Table 2.

Cytotoxicity data of compounds isolated from the roots of S. deserta.

Compound	Cytotoxic activitya, IC50 (μM)
	A549	MDA-MB-231	KB	KB-VIN	MCF-7
1 2β, 3β, 24β - trihydroxy - 12, 13 - cyclo - taraxer-l4-en-28oic acid	>40	>40	>40	>40	>40
3 6, 7-dehydroroyleanone	6.568±0.176	13.320±1.473	8.916±1.186	8.020±0.258	20.779±1.257
4 horminone	19.354±0.342	23.624±1.812	29.581±1.117	24.455±0.459	34.833±0.922
5 7-O-methylhorminone	7.194±0.260	8.450±0.174	10.281±0.648	7.303±0.285	13.716±0.654
6 sugiol	>40	>40	>40	>40	>40
7 demethylcryptojaponol	23.187±0.996	26.243±0.140	23.501±0.960	21.804±0.525	28.590±0.336
8 14-deoxycoleon U	12.249±0.719	18.062±0.008	7.689±0.416	7.707±0.187	8.695±0.975
Paclitaxel (nM)b	4.191±0.493	5.497±0.240	3.529±0.398	2345.602±35.469	11.941±1.305

^aIC₅₀ values based on triplicate five points, presented as the mean ± S.D.

^bExperimental control.