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Chemical Structure| 23687-26-5

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Product Details of [ 23687-26-5 ]

CAS No. :23687-26-5
Formula : C9H8N2
M.W : 144.17
SMILES Code : NC2=CC=C1C=NC=CC1=C2
MDL No. :MFCD04114862
InChI Key :NGFCTYXFMDWFRQ-UHFFFAOYSA-N
Pubchem ID :588991

Safety of [ 23687-26-5 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H319
Precautionary Statements:P305+P351+P338

Computational Chemistry of [ 23687-26-5 ] Show Less

Physicochemical Properties

Num. heavy atoms 11
Num. arom. heavy atoms 10
Fraction Csp3 0.0
Num. rotatable bonds 0
Num. H-bond acceptors 1.0
Num. H-bond donors 1.0
Molar Refractivity 46.15
TPSA ?

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

38.91 Ų

Lipophilicity

Log Po/w (iLOGP)?

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

1.29
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

1.57
Log Po/w (WLOGP)?

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

1.82
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.

0.92
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

1.77
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

1.47

Water Solubility

Log S (ESOL):?

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

-2.4
Solubility 0.58 mg/ml ; 0.00402 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.

-2.0
Solubility 1.45 mg/ml ; 0.0101 mol/l
Class?

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

Very 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

-3.32
Solubility 0.0693 mg/ml ; 0.000481 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.

-6.06 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

1.0 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)

1.01

Application In Synthesis of [ 23687-26-5 ]

* 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 [ 23687-26-5 ]

[ 23687-26-5 ] Synthesis Path-Downstream   1~35

  • 1
  • [ 70538-57-7 ]
  • [ 23687-26-5 ]
YieldReaction ConditionsOperation in experiment
80% With hydrazine hydrate; at 80℃; under 4137.29 Torr; for 0.75h;Microwave irradiation; A mixture of 1u (100 mg, 0.81 mmol), hydrazine hydrate (121.5mg, 2.43 mmol), and SS-Rh (370 mg, 2 molpercent Rh) were taken in an oven dried reaction tube equipped with screw cap. 0.5 ml of PEG-400 was added into the reaction mixture. The reaction was then irradiated in a microwave apparatus at 80°C , 80 W for 10 min with a pressure of 80 Psi. After cooling to ambient temperature in the microwave cavity the reaction mixture was extracted with ethyl acetate (3x2 ml) and water (1ml). The combined organic layer wasdried over anhydrous Na2SO4 and the solvent was removed under reduced pressure and after purificationwith silica gel column chromatography (hexane: EtOAc= 90:10) 2u asyellowish liquid (63 mg, 80percent).1H and 13C NMR spectra hasbeen compared with our previously reported study
  • 2
  • [ 23687-26-5 ]
  • 5-methyl-isoquinolin-6-ylamine [ No CAS ]
  • 3
  • [ 23687-26-5 ]
  • 5-vinyl-isoquinolin-6-ylamine [ No CAS ]
  • 4
  • [ 23687-26-5 ]
  • 5-propyl-isoquinolin-6-ylamine [ No CAS ]
  • 6
  • [ 23687-26-5 ]
  • <i>N</i>-(5-chloro-isoquinolin-6-yl)-acetamide [ No CAS ]
  • 7
  • [ 23687-26-5 ]
  • <i>N</i>-(5-bromo-isoquinolin-6-yl)-acetamide [ No CAS ]
  • 8
  • [ 23687-26-5 ]
  • isoquinolin-6-yl-(5-phenyl-oxazol-2-yl)-amine [ No CAS ]
  • 9
  • [ 23687-26-5 ]
  • 1-(5-bromo-isoquinolin-6-yl)-3-phenyl-urea [ No CAS ]
  • 10
  • [ 91-21-4 ]
  • [ 23687-26-5 ]
  • 11
  • [ 23687-26-5 ]
  • [ 98-59-9 ]
  • [ 347146-31-0 ]
YieldReaction ConditionsOperation in experiment
85% In pyridine; water; Preparation Example 21 6-(4-Toluenesulfonylamino) isoquinoline In pyridine (30 ml) was dissolved <strong>[23687-26-5]6-aminoisoquinoline</strong> (3.348 g, Synthesis, 733 (1975), and 4-toluenesulfonyl chloride (5.13 g) was added thereto, followed by stirring at room temperature overnight. Water was added thereto, followed by extracting with ethyl acetate. The extract was washed with brine, dried over anhydrous magnesium sulfate and the solvent was evaporated. The residue was recrystallized from ethanol, to give the title compound (5.958 g, 85%) as pale yellow crystals. 1H-NMR (DMSO-d6) delta (ppm): 2.28 (3H, s), 7.32 (2H, d, J=8.2 Hz), 7.40 (1H, dd, J=1.6, 9.2 Hz), 7.55 (1H, brs), 7.67 (1H, d, J=5.6 Hz), 7.74 (2H, d, J=8.2 Hz), 7.97 (1H, d, J=9.2 Hz), 8.36 (1H, d, J=5.6 Hz), 9.10 (1H, s).
85% In pyridine; water; Production Example 21b 6-(4-Toluenesulfonylamino)isoquinoline 6-Aminoisoquinoline (3.348 g, Synthesis, 733 (1975)) was dissolved in pyridine (30 ml). To the mixture was added 4-toluenesulfonyl chloride (5.13 g), followed by stirring at room temperature overnight. Water was added thereto, and the mixture was extracted with ethyl acetate. The extract was washed with brine and dried over anhydrous magnesium sulfate. The solvent was evaporated and the residue was recrystallized from ethanol, to give the title compound (5.958 g, 85%) as pale yellow crystals. 1H-NMR (DMSO-d6) delta (ppm): 2.28(3H, s), 7.32(2H, d, J = 8.2 Hz), 7.40(1H, dd, J = 1.6, 9.2 Hz), 7.55(1H, brs), 7.67(1H, d, J = 5.6 Hz), 7.74(2H, d, J = 8.2 Hz), 7.97(1H, d, J = 9.2 Hz), 8.36(1H, d, J = 5.6 Hz), 9.10(1H, s).
85% In pyridine; water; PRODUCTION EXAMPLE 21b 6-(4-Toluenesulfonylamino)isoquinoline 6-Aminoisoquinoline (3.348 g, Synthesis, 733 (1975)) was dissolved in pyridine (30 ml). To the mixture was added 4-toluenesulfonyl chloride (5.13 g), followed by stirring at room temperature overnight. Water was added thereto, and the mixture was extracted with ethyl acetate. The extract was washed with brine and dried over anhydrous magnesium sulfate. The solvent was evaporated and the residue was recrystallized from ethanol, to give the title compound (5.958 g, 85%) as pale yellow crystals. 1H-NMR (DMSO-d6) delta (ppm): 2.28(3H, s), 7.32(2H, d, J=8.2 Hz), 7.40(1H, dd, J=1.6, 9.2 Hz), 7.55(1H, brs), 7.67(1H, d, J=5.6 Hz), 7.74(2H, d, J=8.2 Hz), 7.97(1H, d, J=9.2 Hz), 8.36(1H, d, J=5.6 Hz), 9.10(1H, s).
2.2 g With pyridine; at 20℃; for 12h; Isoquinolin-6-amine B24 (2.00 g, 13.87 mmol) was dissolved in pyridine (20 mL), and 4- methylbenzenesulfonyl chloride (3.17 g, 16.64 mmol) was added. The reaction mixture was stirred at 20C for 12 hours. LCMS showed the reaction was completed. To the reaction mixture was added water (30 mL) under good stirring, the mixture was stirred at 20C for 0.5 hour, pale yellow solid precipitated out. The mixture was filtered and the solid was collected and washed with water (5 mL) to give compound B25 (2.2g) as a yellow solid.

  • 12
  • [ 23687-26-5 ]
  • [ 164148-92-9 ]
  • 3-{1-ethoxy-1-phenylmethylidene}-5-nitro-2-indolinone [ No CAS ]
  • [ 72299-67-3 ]
YieldReaction ConditionsOperation in experiment
Prepared from 3-{1-ethoxy-1-phenylmethylidene}-5-nitro-2-indolinone and 1.1 equivalents of an oily mixture of 2-Boc-6-amino-1,2,3,4-tetrahydro-isoquinoline [prepared from <strong>[23687-26-5]6-amino-isoquinoline</strong>, melting point 218-220° C., by catalytic hydrogenation to obtain 6-amino-1,2,3,4-tetrahydro-isoquinoline (melting point: 69-71° C.) and subsequent reaction with 0.9 equivalents of di-tert.butyl pyrocarbonate (=(Boc)2 O)] in DMF by heating to 100° C. for 3.5 hours, pouring into water, filtering and washing the precipitate with water and EtOH.
  • 13
  • [ 288-32-4 ]
  • [ 67-56-1 ]
  • [ 23687-26-5 ]
  • [ 6327-95-3 ]
  • N-(2-hydroxyethyl)-N'-(isoquinolin-6-yl)-N-[4-[2-(methoxycarbonyl)ethyl]phenyl]-urea [ No CAS ]
YieldReaction ConditionsOperation in experiment
With 1,1'-carbonyldiimidazole; In N-methyl-acetamide; dichloromethane; ethyl acetate; EXAMPLE II N-(2-Hydroxyethyl)-N'-(isoquinolin-6-yl)-N-[4-[2-(methoxycarbonyl)ethyl]phenyl]-urea To 7.2 g of imidazole and 10.1 g of N,N'-carbonyldiimidazole in 100 ml of dimethylformamide are added dropwise, at a temperature of 0° to 10° C., 9.0 g of <strong>[23687-26-5]6-aminoisoquinoline</strong> in 70 ml of dimethylformamide. After 2 hours stirring at ambient temperature, 15.3 g of N-(2-hydroxyethyl)-4-[2-(methoxycarbonyl)ethyl]aniline in 20 ml of dimethylformamide are added dropwise and the mixture is stirred for 21/2 days at ambient temperature. The mixture is diluted with 750 ml of ethyl acetate and extracted twice with water and saturated saline solution. The organic phase is separated off, dried and evaporated down. The residue is purified by chromatography over a silica gel column using ethyl acetate/methylene chloride/methanol=70:30:10. Yield: 4.8 g (19percent of theory), Rf value: 0.48 (silica gel; methylene chloride/methanol/ethyl acetate=20:1:1)
  • 14
  • [ 23687-26-5 ]
  • [ 891842-35-6 ]
  • N-((5-ethoxy-2-fluoro-3-isopropoxyphenyl)(4-phenyl-1-trityl-1H-imidazol-2-yl)methyl)isoquinolin-6-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
With N-ethyl-N,N-diisopropylamine; In acetonitrile; at 20℃; for 2h; To a mixture of Intermediate 25.2 (0.054 mmol) in 1 mL CH3CN at rt, were added DIEA (14 muL, 0.082 mmol) and <strong>[23687-26-5]6-aminoisoquinoline</strong> (15.7 mg, 0.109 mmol). The mixture was stirred at rt for 2 h, then was diluted with EtOAc, washed with H2O and brine, dried (Na2SO4) and concentrated. The crude product was purified by flash chromatography (0 to 100percent EtOAc/hexanes gradient) to afford 22.5 mg of Intermediate 25.3 as a yellow solid.
  • 15
  • [ 23687-26-5 ]
  • [ 98-09-9 ]
  • 6-phenylsulphonamidoisoquinoline [ No CAS ]
YieldReaction ConditionsOperation in experiment
33% With pyridine; In dichloromethane; (e) Benzenesulphonyl chloride (4.9 g, 0.028M) in CH2 Cl2 (15 ml) was added dropwise over 10 minutes to a cooled stirred mixture of <strong>[23687-26-5]6-aminoisoquinoline</strong> (4.0 g, 0.028M) and pyridine (2.37 g, 0.03M) in CH2 Cl2 (150 ml). The reaction mixture was stirred overnight at room temperature and was then washed with H2 O. The CH2 Cl2 solution was dried over MgSO4 and was then chromatographed on a silica gel column. After evaporation the residue was recrystallized from isopropanol to yield 6-phenylsulphonamidoisoquinoline (2.28 g, 33percent), m.p. 204°-6° C.
  • 16
  • [ 23687-26-5 ]
  • [ 347145-20-4 ]
  • [ 98-60-2 ]
  • [ 937-14-4 ]
  • [ 347146-91-2 ]
YieldReaction ConditionsOperation in experiment
In chloroform; Synthetic Example 84b 6-(4-Chlorobenzenesulfonylamino)-1-cyanoisoquinoline The compound obtained using <strong>[23687-26-5]6-aminoisoquinoline</strong> (0.5 g, Synthesis, 733 (1975)) and 4-chlorobenzenesulfonyl chloride (0.88 g) in the same method as in Synthetic Example 1b was dissolved in chloroform (150 ml). Under ice-cooling, m-chloroperbenzoicacid (0.9 g) was added theterto, followed by stirring at room temperature overnight. The solvent was evaporated, and the resulting crystals were washed with diethyl ether, collected by filtration and dried, to give 6-(4-chlorobenzenesulfonylamino)isoquinoline-N-oxide (1.072 g).
  • 17
  • [ 23687-26-5 ]
  • [ 79-04-9 ]
  • [ 920513-65-1 ]
YieldReaction ConditionsOperation in experiment
38% With lithium diisopropyl amide; In tetrahydrofuran; at -78 - 20℃; for 0.5h; Step 1: Synthesis of 2-Chloro-7V-isoquinolin-6-yl-acetamide: A 2.0- mL vial equipped with a stirrer bar was charged with <strong>[23687-26-5]6-aminoisoquinoline</strong> (100 mg, 0.7 mmol) in THF (1.0 niL) and cooled to -78 °C. Lithium diisopropylamine (40 muL, 0.35 mmol) was added to the reaction at -78 °C followed by dropwise addition of chloroacetylchloride (62 muL, 0.7 mmol). The reaction was allowed to warm to room temperature and stirred for 30 min. The reaction was concentrated in vacuo then the solid was triturated with cold methanol. The solid was collected by filtration to afford 2-chloro-iV-isoquinolin-6-yl-acetamide (58 mg, 38percent). 1H NMR (400 MHz, DMSCW6) delta ppm 3.14 (s, 2H) 8.01 (dd, J=9.08, 1.66 Hz, IH) 8.45 (d, J-8.98 Hz, 2H) 8.66 (d, J=1.56 Hz, IH) 11.46 (s, IH); LCMS: 221 (M+H).
  • 18
  • [ 23687-26-5 ]
  • [ 16851-56-2 ]
  • [ 920513-64-0 ]
YieldReaction ConditionsOperation in experiment
With N-ethyl-N,N-diisopropylamine; HATU; In N,N-dimethyl-formamide; at 40℃; To a solution of <strong>[23687-26-5]6-aminoisoquinoline</strong> (25 mg, 0.17 mmol) in DMF (1.0 mL) was added indoline-2-carboxylic acid (30 mg, 0.17 mmol), HATU (70 mg, 0.19 mmol), diisopropylethylamine (35 muL, 0.19 mmol) and stirred overnight at 40 °C. The reaction mixture was concentrated and purified by prep-HP LC to afford the titled compound (3.0 mg): 1H NMR (400 MHz, METHANOL-^) delta ppm 3.18 (dd, J=16.11, 8.30 Hz, IH) 3.56 (dd, J=16.20, 10.54 Hz, IH) 4.52 (dd, J-10.54, 8.40 Hz, IH) 6.70 - 6.81 (m, 2H) 6.99 - 7.10 (m, 3H) 7.73 (d, J=6.05 Hz, IH) 7.81 (dd, J=8.88, 2.05 Hz, IH) 8.05 (d, J=8.98 Hz, IH) 8.35 (d, J=5.86 Hz, IH) 8.40 (d, J-1.95 Hz, IH) 9.11 (s, IH); LCMS: 290 (M+H).[00178] This isoquinoline was also tested using the luciferase biochemical assay. The maximum inhibition was 110percent for GRK-2. The results in Ki (nM) using the scale above were as follows: GRK-2 - ++ GRK-3 - ++ GRK-5 - + EPO <DP n="39"/>GRK-6 - +.
  • 19
  • [ 23687-26-5 ]
  • [ 645-45-4 ]
  • [ 1037198-98-3 ]
YieldReaction ConditionsOperation in experiment
EXAMPLE 2 Preparation of N-(isoquinolin-6-yl)-3-phenylpropanamide (E2) To <strong>[23687-26-5]6-aminoisoquinoline</strong> in DMF cooled to 0° C. was added NaH and the solution was stirred for 30 minutes at 0° C. Then hydrocinnamoyl chloride was added and the mixture was stirred for 4 hours at room temperature. The mixture was diluted with EtOAc, extracted with NaHCO3(sat), dried (Na2SO4), filtered and evaporated. Column chromatography (SiO2, 10percent hexanes/EtOAc) gave N-(isoquilin-6-yl)-3-phenylpropanamide (E2).
  • 20
  • [ 23687-26-5 ]
  • [ 3173-56-6 ]
  • 1-benzyl-3-(isoquinolin-6-yl)urea [ No CAS ]
YieldReaction ConditionsOperation in experiment
With dmap; In N,N-dimethyl-formamide; at 20℃; for 4h; EXAMPLE 88 Preparation of 1-benzyl-3-(isoquinolin-6-yl)urea (E88) To <strong>[23687-26-5]6-aminoisoquinoline</strong> in DMF is added DMAP and benzyl isocyanate and the solution was stirred at room temperature for 4 hours. The mixture was poured into NaHCO3 (sat), extracted with EtOAc, dried (Na2SO4), filtered and evaporated. Flash chromatography (SiO2, 5percent MeOH/CH2Cl2) provided 1-benzyl-3-(isoquinolin-6-yl) urea (E88).
  • 21
  • [ 4530-20-5 ]
  • [ 23687-26-5 ]
  • [ 1045860-33-0 ]
YieldReaction ConditionsOperation in experiment
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; for 8h; EXAMPLE 39 Preparation of tert-butyl 2-(isoquinolin-6-ylamino)-2-oxoethyl carbamate (F39) To N-Boc-glycine in DMF was added EDC, HOBT and <strong>[23687-26-5]6-aminoisoquinoline</strong>. This mixture was stirred for 8 hours. The reaction was washed with NaHCO3(sat), extracted with EtOAc, dried (Na2SO4), filtered and evaporated. Column chromatography (SiO2, MeOH/CH2Cl2) gave tert-butyl 2-(isoquinolin-6-ylamino)-2-oxoethyl carbamate (E39).
  • 22
  • [ 23687-26-5 ]
  • [ 501-53-1 ]
  • [ 1037199-07-7 ]
YieldReaction ConditionsOperation in experiment
EXAMPLE 87 Preparation of benzylisoquinolin-6-ylcarbamate (E87) To <strong>[23687-26-5]6-aminoisoquinoline</strong> in DMF at -40° C. was added NaH and solution was warmed to 0° C. for 30 minutes. Then benzylchloroformate was added and the reaction stirred at 0° C. for 2 hours. The solution was quenched with AcOH, poured into NaHCO3(sat) and extracted with EtOAc, dried (Na2SO4), filtered and evaporated. Flash chromatography (SiO2 90percent EtOAc/Hex) gave benzylisoquinolin-6-ylcarbamate. (E87).
  • 23
  • [ 23687-26-5 ]
  • [ 79-11-8 ]
  • [ 920513-65-1 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; for 4h; EXAMPLE 1 Preparation of 2-chloro-N-(isoquinolin-6-yl) acetamide (E1) To chloroacetic acid in DMF was added EDC, DMAP and <strong>[23687-26-5]6-aminoisoquinoline</strong>. This mixture was stirred for 4 hours. The reaction was washed with NaHCO3(sat), extracted with EtOAc, dried (Na2SO4), filtered and evaporated. Column chromatography (SiO2, 5percent MeOH/CH2Cl2) gave 2-chloro-N-(isoquinolin-6-yl)acetamide (E1).
  • 24
  • [ 955006-90-3 ]
  • [ 23687-26-5 ]
  • [ 1037198-44-9 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20℃; for 3h; The intermediate acid (0.14 mmol) was dissolved in 0.8 ml anhydrous DMF under nitrogen. 1.6 Eq. EDC was added followed by 0.08 eq. DMAP and 1.3 eq. <strong>[23687-26-5]6-aminoisoquinoline</strong> and the reaction left at room temperature for 3 hours. The reaction was poured into water and extracted with EtOAc. The combined organic layers were washed once with water, dried over Na2SO4, filtered and concentrated. The compound was purified by flash chromatography.
  • 25
  • [ 23687-26-5 ]
  • [ 3518-65-8 ]
  • [ 1045859-71-9 ]
YieldReaction ConditionsOperation in experiment
To <strong>[23687-26-5]6-aminoisoquinoline</strong> in DMF at 0° C. is added NaH. After 30 min, chlorosulfonyl chloride is added to the reaction. After 2-4 hours at rt or when TLC indicates completion, the reaction is quenched by the addition of water and extracted with EtOAc. The combined organics are washed with brine and dried (Na2SO4), filtered and evaporated. Column chromatography (SiO2, 5percent MeOH/CH2Cl2) gives 1-chloro-N-(isoquinolin-6-yl) methanesulfonamide.
  • 26
  • [ 23687-26-5 ]
  • C23H19NO4 [ No CAS ]
  • [ 1057107-36-4 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20℃; The intermediate acid was dissolved in 1 mL anhydrous DMF under nitrogen. 1.6 eq. EDC was added followed by 0.08 eq. DMAP and 1.3 eq. <strong>[23687-26-5]6-aminoisoquinoline</strong> and the reaction left at room temperature over night. Reaction was poured into water and extracted with EtOAc. The combined organic layers were washed once with water, dried over MgSO4, filtered and concentrated. The final compound E117d was purified by flash chromatography.
  • 27
  • [ 23687-26-5 ]
  • C17H16N2O3 [ No CAS ]
  • [ 1057107-40-0 ]
YieldReaction ConditionsOperation in experiment
EXAMPLE 118 Synthesis of 4-(2-(isoquinolin-6-ylcarbamoyl) cyclopropyl)-N-(pyridin-4-yl)benzamide (E118) Using the procedures in Example 117, Intermediate 118a was prepared. 1.2 Eq. of <strong>[23687-26-5]6-aminoisoquinoline</strong> was suspended in 0.5 ml toluene in a dry flask under nitrogen. 1.2 eq of 2.0M trimethylaluminum in heptane was added dropwise. After one hour all the suspended material has dissolved. This solution was added to 0.1 mmol of intermediate 118a suspended in 0.5 ml toluene under nitrogen. The reaction is heated at 80° C. overnight. Sat. aq. Rochelle's salt was added to the reaction and this was stirred vigorously for 30 minutes. The aqueous layer was extracted with EtOAc and the combined organic extracts were dried over MgSO4, filtered and concentrated. The compound E118b was purified by flash chromatography.
  • 28
  • [ 23687-26-5 ]
  • C17H14ClN3O3 [ No CAS ]
  • [ 1037212-87-5 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; A 5 mL microwave reaction vial was charged with methyl 2-(4-ethynylphenoxy)acetate, 1-(azidomethyl)-4-chlorobenzene, t-BuOH, copper turnings and copper sulfate. The reaction was heated under microwave conditions at 125° C. for 25 minutes. The reaction was cooled to room temperature and poured into water. The reaction was extracted with CH2Cl2. The combined organic layers were washed with water, dried (Na2SO4), filtered and concentrated. Flash chromatography (SiO2, Hexanes/EtOAc) gave 2-(4-(1-(4-chlorobenzyl)-1H-1,2,3-triazol-4-yl)phenoxy)-N-(isoquinolin-6-yl)-acetamide (E148).
  • 29
  • [ 23687-26-5 ]
  • C16H14N4O3 [ No CAS ]
  • [ 1037198-38-1 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; A solution of methyl 2-(4-(2H-tetrazol-5-yl)phenoxy)acetate in acetone was treated with triethylamine and stirred at room temperature for 20 minutes. Benzyl bromide was added and stirred for 18 hours at 60° C. The solvent was removed and the residue was purified by reverse phase preparative HPLC to give 2-(4-(1-(4-chlorobenzyl)-1H-1,2,3-triazol-4-yl)phenoxy)-N-(isoquinolin-6-yl)-acetamide (E149).
  • 30
  • [ 23687-26-5 ]
  • C19H16O3 [ No CAS ]
  • [ 1037198-47-2 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20℃; for 3h; The intermediate acid (0.12 mmol) was dissolved in anhydrous DMF under nitrogen. 1.6 eq. EDC was added followed by 0.08 eq. DMAP and 1.3 eq. <strong>[23687-26-5]6-aminoisoquinoline</strong> and the reaction left at room temperature for 3 hours. Reaction was poured into water and extracted with EtOAc. The combined organic layers were washed once with water, dried over MgSO4, filtered and concentrated. The compound E206b was purified by flash chromatography.
  • 31
  • [ 23687-26-5 ]
  • [ 1018532-94-9 ]
  • [ 1037198-69-8 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20℃; The intermediate acid was dissolved in anhydrous DMF under nitrogen. 1.6 eq. EDC was added followed by 0.08 eq. DMAP and 1.3 eq. <strong>[23687-26-5]6-aminoisoquinoline</strong> and the reaction left at room temperature over night. Reaction was poured into water and extracted with EtOAc. The combined organic layers were washed once with water, dried over MgSO4, filtered and concentrated. The compound (E208b) was purified by flash chromatography.
  • 32
  • [ 23687-26-5 ]
  • [ 1083175-88-5 ]
  • C42H59N7O9 [ No CAS ]
YieldReaction ConditionsOperation in experiment
With 4-methyl-morpholine; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; Scheme 20 describes an example for the preparation of a parallel synthesis library of polyamine EPIs. Thus the carboxylic acid CXXXII was coupled using standard methods with a variety of CAP amines CXXXIII to give the polyamine EPI CXXXIV.
  • 33
  • [ 23687-26-5 ]
  • [ 30925-12-3 ]
  • [ 1173806-05-7 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; for 4h; Example 7 Preparation of (R)-tert-butyl 2-(isoquinolin-6-ylamino)-2-oxo-1-phenylethyl(methyl)carbamate (E7) To (R)-2-(tert-butoxycarbonyl(methyl)amino)-2-phenylacetate (E6) in DMF was added EDC, DMAP and <strong>[23687-26-5]6-aminoisoquinoline</strong>. This mixture was stirred for 4 hours and the reaction was washed with NaHCO3 (sat), extracted with EtOAc, dried (Na2SO4), filtered and evaporated. Column chromatography (SiO2, Hexanes/EtOAc) gave pure (R)-tert-butyl 2-(isoquinolin-6-ylamino)-2-oxo-1-phenylethyl(methyl)carbamate (E7).
  • 34
  • [ 23687-26-5 ]
  • (R)-2-Boc-2-phenylacetic acid [ No CAS ]
  • [ 1173805-89-4 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; for 4h; Example 1 Preparation of (R)-tert-butyl-2-(isoquinolin-6-ylamino)-2-oxo-1 phenyl-ethylcarbamate (E1) To (R)-2-Boc-2-phenylacetic acid in DMF was added EDC, dimethyl aminopyridine ("DMAP") and <strong>[23687-26-5]6-aminoisoquinoline</strong>. This mixture was stirred for 4 hours and the reaction was washed with NaHCO3 (sat), extracted with EtOAc, dried (Na2SO4), filtered and evaporated. Column chromatography (SiO2, Hexanes/EtOAc) gave pure (R)-tert-butyl-2-(isoquinolin-6-ylamino)-2-oxo-1 phenyl-ethylcarbamate (E1).
  • 35
  • [ 23687-26-5 ]
  • [ 1173807-99-2 ]
  • [ 1173808-00-8 ]
YieldReaction ConditionsOperation in experiment
Example 50 Preparation of N-(isoquinolin-6-yl)cyclohexylamino phenylmethanesulfonamide. (E50) To <strong>[23687-26-5]6-aminoisoquinoline</strong> in DMF at 0° C. is added NaH. After 30 min, chloro(phenyl)methylsulfonyl chloride is added to the reaction. After 2-4 hours at rt or when TLC indicates completion, the reaction is quenched by the addition of water and extracted with EtOAc. The combined organics are washed with brine and dried (Na2SO4), filtered and evaporated. Column chromatography (SiO2, 5percent MeOH/CH2Cl2) gives 1-chloro-N-(isoquinolin-6-yl)phenylmethanesulfonamide.
 

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[ 23687-26-5 ]

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