Compound

Cancer cell line

IC50 (μM)

Compound

Cancer cell line

IC50 (μM)

187a

Colo-289

3.55 ± 0.23

187a

A549

1.59 ± 0.38

187b (R = OH, X = N, Y = C, R’ = CH3)

A 549

1.63 ± 0.32

187b

T47D

1.20 ± 0.06

187c (R = OH, X = CH, Y = C, R = H)

A549

1.86 ± 0.06

187d (R = O(CO)CH3, X = CH, Y = H)

T47D

1.93 ± 0.14