Table 3.

In vitro cytotoxicity (IC₅₀: μM) of glycosides 1–3 against three tumor cell lines (mean ± S.D., n = 3).

Cell Line	1	2	3	HCP a
A-549	3.62 ± 1.08 *	1.84 ± 0.65 *	2.40 ± 0.73 *	0.84 ± 0.05
MOLT-4	2.59 ± 0.94 *	0.68 ± 0.12	2.12 ± 0.81 *	0.16 ± 0.03
BEL-7402	5.26 ± 0.36 *	2.67 ± 0.54 *	5.72 ± 0.82 *	0.03 ± 0.05

^a HCP, 10-hydroxycamptothecine, a positive control; * the data was significantly different from the control (P < 0.05).