Table 1.
R | R′ | R1 | R1′ | IC50 (μM)a |
ΔY (%)a |
|
---|---|---|---|---|---|---|
1b | Me | Me | Et | Et | 6.2±2.7c | 75±1c |
2a | Me | C6H11CH2 | Et | Et | 2.6±0.1 | 63±1 |
2b | Me | Bnd | Et | Et | 2.0±0.1 | 57±1 |
2c | Me | BnCH2 | Et | Et | 1.8±0.1 | 58±1 |
2d | Me | pOMOM-Bn | Et | Et | 3.3±0.2 | 61±2 |
2e | Me | mOMOM-Bn | Et | Et | 4.0±0.5 | 59±5 |
2f | Me | pO-iPr-Bn | Et | Et | 2.3±0.1 | 74±3 |
2g | Me | mO-iPr-Bn | Et | Et | 2.6±0.1 | 57±1 |
2h | C6H11CH2 | C6H11CH2 | Et | Et | 8.7±0.8 | 93±4 |
2i | C6H11CH2 | Bn | Et | Et | 3.6±0.1 | 90±2 |
2j | C6H11CH2 | Me | Et | Et | 3.8±0.3 | 77±3 |
2k | Me | Me | Et | Bn | 4.9±0.2 | 68±2 |
2l | Me | Me | Et | BnCH2 | 3.2±0.2 | 58±3 |
2m | Me | Me | Et | pOMOM-Bn | 2.6±0.1 | 66±2 |
2n | Me | Bn | Xe | Et | 14±0.5 | 74±2 |
2o | Me | Yf | Et | Et | >300g | –h |
2p | Me | SO3Na | Et | Et | >300g | – |
Hirudin peptide (54 – 75) | 1.3i | |||||
Fibrinogen peptide (410 – 427) | 130i |
IC50 and ΔY were measured spectrophotometrically using a chromogenic substrate hydrolysis assay in 20 mM Tris-HCl buffer, pH 7.4, containing 25 mM CaCl2, 100 mM NaCl and 0.1% PEG 8000 at 25 °C.
IC50 and ΔY taken from ref.10.
Errors represent ± 1 S.E.
Bn=benzyl.
X= —CH2CH2OSO3Na.
Y=Bn-mOSO3Na.
No inhibition was observed at 300 μM.
Not applicable.
Values taken from ref.18.