Table 1. Modification of the R1, X, Y, and R2 Groups and Its Inhibitory Activities against PSAa.

N/A= not active (concentrations tested ranged 1 pm, 100 nM, 1 μM, 10 μM, 100 μM, 500 μM); CLogP values generated from Chemdraw software.

N/A= not active (concentrations tested ranged 1 pm, 100 nM, 1 μM, 10 μM, 100 μM, 500 μM); CLogP values generated from Chemdraw software.