Table 4.

Cytotoxicity of selected compounds ^a.

Compound	1 µM	3 µM	10 µM
6f	94	98	85
6h	97	97	87
6s	99	100	82
13b	94	94	66
KuFal194 (5)	78	75	45
Staurosporine b	20

^a Viability of treated HeLa cells is given in percent relative to control cells treated with vehicle (means of three experiments with duplicate measurement). ^b Staurosporine is a known inducer of apoptosis and served as a positive control.