Table 3.
Seven different derivatives of the lead compound were tested to study the effect of different functional groups in the core structure..
| Code | R | R′ | R’’ | IC50 (μM) |
|---|---|---|---|---|
| PMD0033 | 2-Nitro | -COOH | H | 63 |
| PMD0022 | 3,4-Dihydroxy | -COOH | H | >200 |
| PMD0026 | 4-N-(CH3)2 | -COOH | H | >500 |
![]() | ||||
| Code |
R |
R′ |
R’’ |
IC50 (μM) |
| PMD0024 | ![]() |
-COOH | CH3 | 8.6 |
| PMD0023 | ![]() |
3,4-Dichloro | CH3 | >200 |



