Table 1.
Compound # | Tier of Inhibitor |
Chemical Structure | Isoform Selectivity | Domain Targeted | % Inhibitiona |
---|---|---|---|---|---|
5 | Top | Grp94 | N-term | 159.6 | |
1 | Top | Grp94 | N-term | 148.4 | |
3 | Mid | Grp94 | N-term | 54.3 | |
7 | Mid | Grp94 | N-term | 52.8 | |
2 | Mid | Grp94 | N-term | 52.3 | |
11 | Mid | Hsp90β | N-term | 43.2 | |
10 | Low | Grp94 | N-term | 31.4 | |
4 | Low | Non-selective | N-term | 28.4 | |
6 | Low | Structure Not Disclosed | Hsp90α | N-term | 27.9 |
9 | Low | Structure Not Disclosed | Hsp90β | N-term | 27.4 |
13 | Non | -- | C-term | −31.7 | |
16 | Non | -- | C-term | −32.0 | |
12 | Non | -- | C-term | −38.7 | |
17 | Non | -- | C-term | −43.5 | |
14 | Non | -- | C-term | −85.1 | |
15 | Non | -- | C-term | −86.7 | |
8 | Non | Structure Not Disclosed | Hsp90α/β | N-term | −98.3 |
See Supporting Information for calculation of % Inhibition after correction for the heat gradient experienced and intrinsic compound fluorescence. Tier ranking: >66% inhibition (top), >33% (mid), >0% (low), <0% (Non) non-hit).