Table 3: Screening data for compounds 16-17.

Cmpd R1, R2 & R3 CC50 (µM)
HT29 PC3 MDA-MB-231
16 R1 & R3 = H, R2 = SCH3 15.99±6.08 33.60±6.59 19.33±2.12
17 R1, R2 & R3 = OCH3 14.64±2.42 29.73±4.49 15.35±4.44