## Endpoint to Predict
- Endpoint scope: assay
- Measurement type: IC50
- Label type: continuous
- Binary semantics: pchembl
- Assay description: Measurement of Inhibitory Activity Against JAK3 and BTK Enzymes: JAK3 and BTK kinases inhibitory activities were measured for the compounds prepared in the Examples through in vitro analysis on the ADP Glow (Glo) platform.Specifically, the inhibitory activities against JAK3 and BTK kinase were measured using a JAK3 kinase assay kit (Promega, V9441) and a BTK kinase assay kit (Promega, V9071) which were purchased from Promega. Recombinant purified human JAK3 and BTK were diluted with 1× kinase reaction buffer (JAK3: 40 mM Tris-Cl, pH 7.5, 20 mM MgCl2, 0.1 mg/mL BSA and 50 uM DTT/BTK: 40 mM Tris-Cl, pH 7.5, 20 mM MgCl2, 0.1 mg/mL BSA, 2 mM MnCl2 and 50 uM DTT) and added to 96 well plates (JAK3: final concentration of 4 ng per reaction/BTK: final concentration of 8 ng per reaction). The compounds prepared in the previous Examples were treated so as to be finally a 1% DMSO aqueous solution, and a substrate cocktail containing ATP (JAK3: final concentration of 5 uM/BTK: final concentration of 10 uM) and 0.2 ug/uL of Poly(Glu4, Tyr1) peptide (JAK3 and BTK final concentration) in the total 25 uL reactants was added to 96-well plates to initiate enzymatic reaction. After incubation (30° C.) for 1 hour, equivalent volume (25 uL per reaction) of ADP Glo was added and incubated (30° C.) for 40 minutes at room temperature. Then, a kinase detection reagent (50 uL per reaction) was added and incubated (30° C.) for 30 minutes at room temperature. The kinase activity was measured by chemiluminescence according to the instructions of ADP Glo kinase assay kit, and the inhibitory activity of the compounds according to the present invention was calculated. For the analysis of the results of each compound, Microsoft Excel was used, and IC50 values were calculated by SigmaPlot software.
- Assay organism: Homo sapiens
- Target name: Tyrosine-protein kinase BTK
- Target type: SINGLE PROTEIN
- Target organism: Homo sapiens

## Reference Molecule A
- Canonical SMILES: C=CC(=O)N1CCC[C@@H](n2nc(-c3ccc(Oc4ccccc4)cc3)c3c(N)ncnc32)C1
- Properties:
- ChEMBL ID: CHEMBL1873475
- Preferred name: IBRUTINIB
- Molecule type: Small molecule
- Max clinical phase: 4
- Molecular weight: 440.51
- Heavy atoms: 33
- Hydrogen bond donors: 1
- Hydrogen bond acceptors: 6
- TPSA: 99.16
- LogP: 4.22
- Rotatable bonds: 5
- Ring count: 5
- Aromatic rings: 4
- Formal charge: 0
- Fraction Csp3: 0.2
- QED: 0.47

## Known Reference Result on This Endpoint
- Molecule A clean result: median pChEMBL = 9.22
- This result is provided as context for predicting Molecule B on the same endpoint.

## Reference Molecule A Other ChEMBL Evidence
- type IC50; relation =; value 0.6; units nM; pChEMBL 9.22; comment 1190278

## Query Molecule B
- Canonical SMILES: C=CC(=O)N1C[C@H](Nc2nc(Nc3cnn(CC)c3)nc3[nH]cc(Cl)c23)CC[C@@H]1C
- Properties:
- ChEMBL ID: CHEMBL5747771
- Molecular weight: 428.93
- Heavy atoms: 30
- Hydrogen bond donors: 3
- Hydrogen bond acceptors: 6
- TPSA: 103.76
- LogP: 3.55
- Rotatable bonds: 6
- Ring count: 4
- Aromatic rings: 3
- Formal charge: 0
- Fraction Csp3: 0.4
- QED: 0.52

## Molecule Similarity
- Weighted Tanimoto: 0.2

Answer: 8.92