Structure of 4-Indolyl acetate
CAS No.: 5585-96-6
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The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
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CAS No. : | 5585-96-6 |
Formula : | C10H9NO2 |
M.W : | 175.18 |
SMILES Code : | CC(=O)OC1=C2C=CNC2=CC=C1 |
MDL No. : | MFCD00010678 |
InChI Key : | ZXDMUHFTJWEDEF-UHFFFAOYSA-N |
Pubchem ID : | 583934 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302-H317 |
Precautionary Statements: | P280 |
Num. heavy atoms | 13 |
Num. arom. heavy atoms | 9 |
Fraction Csp3 | 0.1 |
Num. rotatable bonds | 2 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 1.0 |
Molar Refractivity | 49.8 |
TPSA ? Topological Polar Surface Area: Calculated from |
42.09 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.66 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
1.78 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
2.09 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
1.38 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
2.36 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.86 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.43 |
Solubility | 0.654 mg/ml ; 0.00373 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.28 |
Solubility | 0.915 mg/ml ; 0.00522 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-3.36 |
Solubility | 0.0772 mg/ml ; 0.000441 mol/l |
Class? Solubility class: Log S scale |
Soluble |
GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg |
High |
BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg |
Yes |
P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) |
No |
CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) |
Yes |
CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) |
No |
CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) |
No |
CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set) |
No |
CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) |
No |
Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-6.1 cm/s |
Lipinski? Lipinski (Pfizer) filter: implemented from |
0.0 |
Ghose? Ghose filter: implemented from |
None |
Veber? Veber (GSK) filter: implemented from |
0.0 |
Egan? Egan (Pharmacia) filter: implemented from |
0.0 |
Muegge? Muegge (Bayer) filter: implemented from |
1.0 |
Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat |
0.55 |
PAINS? Pan Assay Interference Structures: implemented from |
0.0 alert |
Brenk? Structural Alert: implemented from |
1.0 alert: heavy_metal |
Leadlikeness? Leadlikeness: implemented from |
No; 1 violation:MW<1.0 |
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
1.48 |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
99.2% | With pyridine; In dichloromethane; at 0 - 25℃;Inert atmosphere; Large scale; | 4-hydroxyindole (1eq. limiting reagent) was charged to a vessel under N2 followed by DCM (dichloromethane; 6 vol based on 4-hydroxyindole charge). The reaction was cooled to 0-5C and pyridine added (1.2 eq) dropwise at 0-5C. Acetic anhydride (1.1 eq) was added dropwise at 0-5C and the reaction warmed to 20-25C for 1 - 1.5 hrs and stirred at 20-25C for a further 3 hours. The reaction was sampled and analysed for completion. The reaction was then washed three times with 20% aqueous citric acid solution (3 x 3 vol based on 4-hydroxyindole charge) and once with sat. NaHCC-3 (3 vol based on 4-hydroxyindole charge). The DCM solution was dried over MgSC and filtered and the DCM layer concentrated to half volume by distillation. Heptane (6 vol based on 4-hydroxyindole charge) was added and further DC was removed by distillation until full precipitation of the Stage 1 had occurred. The reaction was cooled to 15-25C and the solids collected by filtration, washing with heptane (1 vol based on 4-hydroxyindole charge) dried under vacuum overnight at 60C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In tetrahydrofuran; tert-butyl methyl ether; at 35 - 40℃;Large scale; | Stage 1 (1eq. limiting reagent) was charged to a vessel under N2 followed by THF (1 vol wrt stage 1 charge) and TBME (6 vol wrt stage 1 charge). Oxalyl chloride was then added dropwise to the vessel (1.5 eq,) allowing the exotherm to initially raise the temperature to 35- 40C and then applying cooling as required to maintain 35-40C. Immediately following the addition the reaction was heated to 40C and stirred for 2-6 hours. The reaction was sampled and analysed for completion, then cooled to RT and heptane (8 vol wrt stage 1 charge) added giving precipitation of further solids. The reaction was stirred for 10 min and then the solids were allowed to settle. The majority of the solvent was decanted from the solid which was then washed twice with heptane (2 x 6 vol wrt stage 1 charge), decanting in a similar manner after each wash. The solids were then sampled and analysed. TBME was charged to the vessel (4 vol wrt stage 1 charge) to give a yellow slurry which was cooled to - 20C using a dry ice/acetone bath. A 2M solution of Mue2NuEta in THF (2 eq,) was added dropwise to the vessel over ~15 min maintaining the temperature at -20C to -10C. The reaction mixture was allowed to warm slowly to RT and stirred overnight. Further Mue2NuEta can be added at this point if required. The reaction was sampled and analysed for completion. The reaction was filtered, washing with heptane (2 x 2 vol wrt stage 1 charge) and the isolated solids dried at 60C under vacuum. The crude stage 2 was slurried in water (8 vol wrt stage 1 charge) for 2-18 hours and then filtered, washing with water (2 vol wrt stage 1 charge). The solids were dried at 60C under vacuum to obtain crude stage 2 with <2% w/w water (determined by Karl Fischer titration (KF)). The crude stage 2 was slurried in IPA (10 vol) for 2-18 hrs and then filtered, washed with IPA (1 vol wrt mass of crude Stage 2) and oven dried under vacuum at 60C. |
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