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Structure of 288385-88-6

Chemical Structure| 288385-88-6

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Product Details of [ 288385-88-6 ]

CAS No. :288385-88-6
Formula : C9H8FNO
M.W : 165.16
SMILES Code : CC(N1)=CC2=C1C=CC(O)=C2F
MDL No. :MFCD07368140
InChI Key :UMWRMOYYUHIPDT-UHFFFAOYSA-N
Pubchem ID :10352036

Safety of [ 288385-88-6 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Computational Chemistry of [ 288385-88-6 ] Show Less

Physicochemical Properties

Num. heavy atoms 12
Num. arom. heavy atoms 9
Fraction Csp3 0.11
Num. rotatable bonds 0
Num. H-bond acceptors 2.0
Num. H-bond donors 2.0
Molar Refractivity 45.25
TPSA ?

Topological Polar Surface Area: Calculated from
Ertl P. et al. 2000 J. Med. Chem.

36.02 Ų

Lipophilicity

Log Po/w (iLOGP)?

iLOGP: in-house physics-based method implemented from
Daina A et al. 2014 J. Chem. Inf. Model.

1.72
Log Po/w (XLOGP3)?

XLOGP3: Atomistic and knowledge-based method calculated by
XLOGP program, version 3.2.2, courtesy of CCBG, Shanghai Institute of Organic Chemistry

2.19
Log Po/w (WLOGP)?

WLOGP: Atomistic method implemented from
Wildman SA and Crippen GM. 1999 J. Chem. Inf. Model.

2.74
Log Po/w (MLOGP)?

MLOGP: Topological method implemented from
Moriguchi I. et al. 1992 Chem. Pharm. Bull.
Moriguchi I. et al. 1994 Chem. Pharm. Bull.
Lipinski PA. et al. 2001 Adv. Drug. Deliv. Rev.

1.65
Log Po/w (SILICOS-IT)?

SILICOS-IT: Hybrid fragmental/topological method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

2.9
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

2.24

Water Solubility

Log S (ESOL):?

ESOL: Topological method implemented from
Delaney JS. 2004 J. Chem. Inf. Model.

-2.8
Solubility 0.263 mg/ml ; 0.00159 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble
Log S (Ali)?

Ali: Topological method implemented from
Ali J. et al. 2012 J. Chem. Inf. Model.

-2.58
Solubility 0.434 mg/ml ; 0.00263 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble
Log S (SILICOS-IT)?

SILICOS-IT: Fragmental method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

-3.37
Solubility 0.0711 mg/ml ; 0.000431 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble

Pharmacokinetics

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)
and tested on 415 molecules (test set)
10-fold CV: ACC=0.72 / AUC=0.77
External: ACC=0.88 / AUC=0.94

No
CYP1A2 inhibitor?

Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.83 / AUC=0.90
External: ACC=0.84 / AUC=0.91

Yes
CYP2C19 inhibitor?

Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.80 / AUC=0.86
External: ACC=0.80 / AUC=0.87

No
CYP2C9 inhibitor?

Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set)
and tested on 2075 molecules (test set)
10-fold CV: ACC=0.78 / AUC=0.85
External: ACC=0.71 / AUC=0.81

No
CYP2D6 inhibitor?

Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set)
and tested on 1068 molecules (test set)
10-fold CV: ACC=0.79 / AUC=0.85
External: ACC=0.81 / AUC=0.87

No
CYP3A4 inhibitor?

Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set)
and tested on 2579 molecules (test set)
10-fold CV: ACC=0.77 / AUC=0.85
External: ACC=0.78 / AUC=0.86

No
Log Kp (skin permeation)?

Skin permeation: QSPR model implemented from
Potts RO and Guy RH. 1992 Pharm. Res.

-5.75 cm/s

Druglikeness

Lipinski?

Lipinski (Pfizer) filter: implemented from
Lipinski CA. et al. 2001 Adv. Drug Deliv. Rev.
MW ≤ 500
MLOGP ≤ 4.15
N or O ≤ 10
NH or OH ≤ 5

0.0
Ghose?

Ghose filter: implemented from
Ghose AK. et al. 1999 J. Comb. Chem.
160 ≤ MW ≤ 480
-0.4 ≤ WLOGP ≤ 5.6
40 ≤ MR ≤ 130
20 ≤ atoms ≤ 70

None
Veber?

Veber (GSK) filter: implemented from
Veber DF. et al. 2002 J. Med. Chem.
Rotatable bonds ≤ 10
TPSA ≤ 140

0.0
Egan?

Egan (Pharmacia) filter: implemented from
Egan WJ. et al. 2000 J. Med. Chem.
WLOGP ≤ 5.88
TPSA ≤ 131.6

0.0
Muegge?

Muegge (Bayer) filter: implemented from
Muegge I. et al. 2001 J. Med. Chem.
200 ≤ MW ≤ 600
-2 ≤ XLOGP ≤ 5
TPSA ≤ 150
Num. rings ≤ 7
Num. carbon > 4
Num. heteroatoms > 1
Num. rotatable bonds ≤ 15
H-bond acc. ≤ 10
H-bond don. ≤ 5

1.0
Bioavailability Score?

Abbott Bioavailability Score: Probability of F > 10% in rat
implemented from
Martin YC. 2005 J. Med. Chem.

0.55

Medicinal Chemistry

PAINS?

Pan Assay Interference Structures: implemented from
Baell JB. & Holloway GA. 2010 J. Med. Chem.

0.0 alert
Brenk?

Structural Alert: implemented from
Brenk R. et al. 2008 ChemMedChem

0.0 alert: heavy_metal
Leadlikeness?

Leadlikeness: implemented from
Teague SJ. 1999 Angew. Chem. Int. Ed.
250 ≤ MW ≤ 350
XLOGP ≤ 3.5
Num. rotatable bonds ≤ 7

No; 1 violation:MW<1.0
Synthetic accessibility?

Synthetic accessibility score: from 1 (very easy) to 10 (very difficult)
based on 1024 fragmental contributions (FP2) modulated by size and complexity penaties,
trained on 12'782'590 molecules and tested on 40 external molecules (r2 = 0.94)

1.67

Application In Synthesis of [ 288385-88-6 ]

* 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.

  • Downstream synthetic route of [ 288385-88-6 ]

[ 288385-88-6 ] Synthesis Path-Downstream   1~3

  • 1
  • [ 649736-31-2 ]
  • [ 288385-88-6 ]
YieldReaction ConditionsOperation in experiment
81% With sodium dithionite; In water; at 0 - 30℃; for 1.0h; 1-(2-fluoro-3-hydroxy-6-nitrophenyl)-propan-2-one from previous step (50 g, 0.234 mol) was added to 2 liter round bottom flask. Water (1L) was added, and the yellow suspension was stirred at Rt. Sodium dithionite (225 g, 5.5 eq) was added in one portion and the reaction mixture was stirred and kept < 30 C until HPLC analysis indicated no starting material remained (typically less than 1 hour). Upon completion, the reaction mixture was cooled to 0 C and the tan solid product was collected by vacuum filtration. The wet product was dried at <50 C under house vacuum to afford 4-fluoro-2-methyl-1H-indol-5-ol (31.4 g, 81 % yield) which was isolated as a tan crystalline powder. The material had an HPLC purity of >99.8. 1H NMR (CDC3, 400 MHz) delta 7.8 (s, 1H), 6.9-6.7 (m, 2H), 6.2 (s, 1H), 4.7 (s, 1H), 2.4 (s, 3H). 13 C NMR (CDCl3, 100 MHz) delta 145.7, 143.4, 137.5, 136.7, 134.4, 120.1, 112.7, 106.8, 95.4, 13.3
68% With sodium dithionite; potassium carbonate; In water; at 25℃; for 2.0h;Industry scale;Product distribution / selectivity; Preparation of 4-fluoro-2 -methyl- lH-indol-5-ol (large scale)To a solution of potassium carbonate (79 kg) in water (800 kg) was added l-(2-fluoro-3- hydroxy-6-nitrophenyl)-propan-2-one (61 kg) and the mixture stirred to give a solution. To this solution at 250C was added a solution of sodium dithionite (298 kg) in water (750 kg).The mixture was held at 250C for 2 hours. The product was isolated by filtration, washing the filter cake with water (366 kg). The product was dried under reduced pressure (50 mbar) at350C. Yield: 34 kg, 72%. The crude 4-fluoro-2-methyl-lH-indol-5-ol (33 kg) was dissolved in dichloromethane(880 1) and filtered through silica (33 kg). The filter was washed with dichloromethane (4401). The combined filtrates were distilled, removing 835 1 of distillate. This concentrate was EPO <DP n="43"/>added rapidly to ?hexane (360 kg), resulting in a suspension. The batch was distilled, removing 436 1 of distillate. The batch was cooled to 00C, aged for 1 hour and then filtered. The filter cake was washed with /s°hexane (73 kg). The product was dried under reduced pressure (50 mbar) at 35C. Yield: 31 kg, 68% based on l-(2-fluoro-3-hydroxy-6- s nitrophenyl)-propan-2-one.
17% With hydrogen;palladium on activated charcoal; In ethanol; at 20℃; for 8.0h; Step 3c: 4-Fluoro-2-methyl-1H-indol-5-ol (Compound 304) A mixture of 303 (900 mg, 4.2 mmol), Pd/C (90 mg) and ethanol (20 mL) was stirred under H2 at ambient temperature for 8 h. The solvent was removed and the residue was purified by column chromatography on silica gel (EtOAc/petroleum ether=1/15) to give the title compound 304 as a brown solid (120 mg, 17%): LCMS: 166 [M+1]+; 1H NMR (DMSO-d6): delta 2.34 (s, 3H), 6.05 (s, 1H), 6.64 (t, J=8.4 Hz, 1H), 6.86 (d, J=8.4 Hz, 1H), 8.70 (s, 1H), 10.84 (s, 1H).
With sodium dithionite; potassium carbonate; In water; for 1.5h;Product distribution / selectivity; Preparation of 4-fluoro-2 -methyl- lH-indol-5-ol (small scale) l-(2-fluoro-3-hydroxy-6-nitrophenyl)-propan-2-one (1 g) was dissolved in a solution of potassium carbonate (1.3g) in water (13 ml). A solution of sodium dithionite (5.24g) in water (12.3 ml) was added dropwise. The mixture was stirred for 1.5 hours, then left to stand overnight. The solid was filtered and washed with water (6 ml). The solid was dried at 35C in a vacuum oven to give crude 4-fluoro-2-methyl-lH-indol-5-ol (0.5 g, 64.5%). EPO <DP n="41"/>The crude solid (250 mg) was dissolved in dichloromethane (6.75 ml) and filtered through a pad of silica (250 mg). The filter pad was washed with dichloromethane (3.4 ml).The combined filtrates were distilled, removing 6 ml of dsitillate. The concentrate was then added dropwise to ohexane (4.25 ml) and the mixture concentrated, removing 3 ml of distillate. The mixture was cooled in an ice-bath and the precipitate filtered and washed with wohexane (0.9 ml). The solid was dried in a vacuum oven at 350C to give 4-fluoro-2-methyl- lH-indol-5-ol (180 mg, 72%)Mass Spectrum [M+eta]+ 166IH NMR Spectrum (400 MHz, DMSO-J6) delta ppm 2.33 (s, 3 H) 6.02 - 6.05 (m, 1 H) 6.64 (t, J=8.41 Hz, 1 H) 6.87 (d, J=8.51 Hz, 1 H) 8.68 (s, 1 H) 10.81 (br. s., 1 H)

  • 2
  • [ 288385-99-9 ]
  • [ 288385-88-6 ]
  • 3
  • [ 288385-88-6 ]
  • [ 13790-39-1 ]
  • [ 1622317-21-8 ]
YieldReaction ConditionsOperation in experiment
78% With potassium carbonate; In N,N-dimethyl-formamide; at 100℃; for 24h; A solution of Compound 10 (739 mg, 3.3 mmol), 4-Fluoro-2-methyl-1H-indol-5-ol (530 mg, 3.3 mmol), and potassium carbonate (920 mg, 6.7 mmol) in dry dimethyl formamide (10 mL) was heated to 100 C. and stirred for 24 hours. The solution was cooled to room temperature and the solvent evaporated by rotary evaporator. Remaining residue was co-evaporated with methanol (20 mL) and dichloromethane/methanol (50 mL). The product residue was precipitated from water (20 mL) and filtered. Solids were washed with water (20 mL), hexanes (20 mL), and diethyl ether (20 mL). Product was dried under high vacuum to give 910 mg of Compound 11 (yield=78%) as a brown powder
 

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