Table 1.
In vitro biological and physical properties of 3-nitrotriazole-based amides/sulfonamides.
| Comp. | T.b.rhod.a | SI | T. cruzib | SI | L.don. ax.c | SId | L6e | IC50 Bnz/IC50 Comp | logP | PSA | Chemical Structure |
|---|---|---|---|---|---|---|---|---|---|---|---|
| IC50 (μM) | IC50 (μM) | IC50(μM) | IC50 (μM) | (Å2) | |||||||
| Melars. | 0.012 | Reference | |||||||||
| Bnz | 1.562 | Reference | |||||||||
| Miltef. | 0.382 | Reference | |||||||||
| Podoph. | 0.022 | Reference | |||||||||
| 1 | 21.374 | 6.053 | 29 | 13.77 | 176.6 | 0.3 | 2.52 | 92.74 | ![]() |
||
| 2 | 46.648 | 3.715 | 74 | 36.03 | 274 | 0.4 | 3.07 | 102 | ![]() |
||
| 3 | 3.161 | 0.438 | >625 | 33.44 | >273.6 | 3.6 | 2.09 | 105.6 | |||
| 4 | 0.501 | 208 | 0.176 | 591 | 7.93 | 104.3 | 8.9 | 2.66 | 105.6 | ||
| 5 | 1.986 | >131 | 0.73 | >357 | 29.25 | >260.9 | 2.1 | 2.64 | 114.9 | ||
| 6 | 1.391 | >193 | 0.113 | >2381 | 12.98 | >268 | 13.8 | 3.22 | 114.9 | ||
| 7 | 3.761 | 0.353 | >826 | 37.32 | >292 | 4.4 | 2.15 | 105.6 | |||
| 8 | 16.4 | 11.4 | 0.642 | 290.7 | 12.34 | 186.6 | 2.4 | 3.03 | 105.6 | ![]() |
|
| 9 | 3.546 | 3.459 | >84 | 96.51 | >291 | 0.5 | 1.32 | 118.5 | |||
| 10 | 3.22 | 0.138 | 1579 | 19.94 | 217.98 | 11.3 | 1.81 | 118.5 | |||
| 11 | 4 | 0.132 | 691 | 13.41 | 91.5 | 11.8 | 2.33 | 118.5 | |||
| 12 | 34.862 | 0.807 | >379 | 62.69 | >306 | 1.9 | 0.98 | 131.4 | |||
| 13 | 0.587 | 199 | 0.043 | 2782 | 8.37 | 117 | 36.3 | 2.92 | 105.6 | ![]() |
|
| 14 | 9.96 | 3.383 | 102 | 28.12 | 344.83 | 0.5 | 0.95 | 105.6 | |||
| 15 | 6.474 | 0.970 | 133 | 10.39 | 128.88 | 1.6 | 1.83 | 105.6 | ![]() |
||
| 16 | 3.404 | 0.307 | 468 | 51.37 | 143.77 | 5.1 | 2.17 | 96.84 | |||
| 17 | 11.51 | 14.8 | 1.799 | 94.4 | 5.91 | 28.7 | 169.8 | 0.9 | 2.58 | 118.5 | ![]() |
| 18 | 48.45 | 3.4 | 6.588 | 24.8 | 5.82 | 28 | 163.1 | 0.2 | 2.67 | 118.5 | |
| 19 | 34.42 | <1 | 7.876 | 3.3 | 4.68 | 5.6 | 26.3 | 0.2 | 1.88 | 131.66 | ![]() |
| 20 | 6.03 | 4 | 0.734 | 33 | 11.43 | 24.18 | 2.1 | 3.08 | 117.66 | ![]() |
|
| 21 | 27.51 | 1.659 | 106 | 15.55 | 175.99 | 0.9 | 2.27 | 109.81 | |||
| 22 | 2.79 | 0.803 | 248.5 | 32.38 | 199.5 | 1.9 | 1.84 | 122.70 | |||
| 23 | 0.504 | 467 | 0.359 | 656 | 13.09 | 235.33 | 4.4 | 1.9 | 122.70 | ||
| 24 | 0.354 | 240 | 0.71 | 120 | 7.79 | 84.91 | 2.2 | 2.42 | 122.70 | ||
| 25 | 10.313 | 0.644 | 178 | 46.09 | 114.77 | 2.4 | 2.78 | 122.70 | |||
| 26 | 36.7 | 3 | 1.677 | 66.2 | 33.26 | 111.1 | 0.9 | 2.72 | 122.70 | ![]() |
|
| 27 | 11.3 | 9.6 | 0.322 | 337.6 | 20.74 | 108.7 | 4.9 | 2.78 | 122.70 | ![]() |
|
| 28 | 2.54 | 121 | 0.412 | >746.8 | 38.15 | >8.1 | >307.7 | 3.8 | 1.54 | 122.70 | ![]() |
| 29 | 0.477 | 234.9 | 0.203 | 551.7 | 7.8 | 14.4 | 112 | 7.7 | 2.97 | 131.93 | |
| 30 | 8.39 | >38.3 | 6.463 | >48 | 112.86 | >321.5 | 0.2 | 0.73 | 122.70 | ![]() |
|
| 31 | 6.49 | >47.4 | 2.237 | >137.6 | 79.38 | >307.7 | 0.7 | 0.79 | 122.70 | ||
| 32 | 35.88 | >9.3 | 83.39 | 4 | >332.2 | >332.2 | 0.0 | −0.25 | 140.52 | ![]() |
|
| 33 | 21.9 | >14.5 | 20.57 | >15 | 223.17 | >317.5 | 0.1 | −0.19 | 140.52 | ![]() |
|
| 34 | 1.99 | 122 | 0.438 | 556 | 33 | 7.4 | 243.5 | 3.6 | 1.74 | 122.70 | |
| 35 | 1.049 | 0.028 | 1764 | 7.54 | 50 | 55.8 | 2.67 | 122.70 | ![]() |
||
| 36 | 6.519 | 0.4 | 519 | 32.87 | 208 | 3.9 | 1.18 | 135.59 | |||
| active | moderately active | active but cytotoxic, low specificity | |||||||||
T.b. rhodesiense, strain STIB 900 trypomastigotes;
T. cruzi, strain Tulahuen C4 amastigotes;
L. donovani axenic, strain MHOM-ET-67/L82 amastigotes;
SI is the ratio: IC50 in L6 cells/IC50 in each parasite.
Cytotoxicity in L6 cells. Reference drugs: Melarsoprol (Melars), Benznidazole (Bnz), Miltefosine (Miltef), Podophylotoxin (Podoph). The IC50 value of each reference is the mean from 36 measurements in parallel with each compound (SD was 0.001, 0.011 and 0.005 for Melars, Bnz and Miltef, respectively). PSA: polar surface area; All physical properties were predicted by using the Marvin Calculator (www.chemaxon.com).














