Structure of 97817-23-7
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CAS No. : | 97817-23-7 |
Formula : | C6H9N3S |
M.W : | 155.22 |
SMILES Code : | NC1=NC2=C(CNCC2)S1 |
MDL No. : | MFCD06657759 |
Boiling Point : | No data available |
InChI Key : | YYZRTZLOUDOIGR-UHFFFAOYSA-N |
Pubchem ID : | 13519687 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 10 |
Num. arom. heavy atoms | 5 |
Fraction Csp3 | 0.5 |
Num. rotatable bonds | 0 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 2.0 |
Molar Refractivity | 45.86 |
TPSA ? Topological Polar Surface Area: Calculated from |
79.18 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.3 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
0.08 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
-0.15 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
-0.29 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
1.96 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
0.58 |
Log S (ESOL):? ESOL: Topological method implemented from |
-1.22 |
Solubility | 9.29 mg/ml ; 0.0599 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (Ali)? Ali: Topological method implemented from |
-1.3 |
Solubility | 7.83 mg/ml ; 0.0505 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-1.8 |
Solubility | 2.45 mg/ml ; 0.0158 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 |
No |
P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) |
Yes |
CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) |
No |
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 |
-7.19 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 |
0.0 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) |
2.52 |
* 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 |
---|---|---|
With sodium hydroxide; ammonium chloride; In ethanol; chloroform; | 2. 2-Amino-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine 5-Acetyl-2-amino-4,5,6,7-tetrahydrothiazolo-[5,4-c]pyridine (110 mg, 0.51 mmol) was dissolved in ethanol (1 ml) and treated with sodium hydroxide (15.4 mg, 0.38 mmol) in ethanol (1 ml). The solution was heated to 100 for 16 hours, then treated with additional sodium hydroxide (25.6 mg, 0.64 mmol) and heated to reflux for an additional 16 hours. Solid ammonium chloride was added, and the mixture was filtered and concentrated in vacuo. The residue was dissolved in chloroform, dried over sodium sulfate and solvent was removed, leaving the title product (67.4 mg, 0.43 mmol, 84% yield) as a yellow solid, which was used without further purification. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
91% | With formaldehyd; acetic acid; In methanol; | 6. 2-Amino-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine A solution of 2-amino-4-(2-aminoethyl)thiazole (1.57 g, 11.0 mmol) in methanol (120 ml) was treated with acetic acid (0.15 ml, 2.6 mmol) and formaldehyde (0.89 ml of a 37% aqueous solution, 11 mmol). After ten minutes, the reaction mixture was concentrated in vacuo and subjected to column chromatography (eluant: 95:4:1 chloroform:methanol:concentrated ammonium hydroxide). The product was obtained as a white solid, m.p. 169-173 (1.547 g, 10.0 mmol, 91% yield). 1 H NMR (DMSO-d6): 6.64 (s, 2H), 3.59 (s, 2H), 2.87 (t, J=6 Hz, 2H), 2.33 (bt, 2H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | In ethanol; | EXAMPLE 9 2-Amino-5-(N-cyano-N'-methyl-amidino)-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine (n=0, R1 =R2 =H, R3 =CH3, X=NR8, R8 =CN)-FCE 22952 To a solution of 3.1 g (20 mmol) of <strong>[97817-23-7]2-amino-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine</strong> in 40 ml of absolute ethanol, 4.09 (28 mmol) of N-cyano-S,S-dimethyl cyanodithioiminocarbonate (IV: X"=NR8, R8 =CN) was added at room temperature. After standing for 30 hours, the reaction mixture was filtered to afford 2-amino-5-(methylthio-N-cyano-iminomethyl)-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine (V: R1 =R2 =H, n=0, X"=R8, R8 =CN), m.p. 152-155 C., in 85% yield. 4.33 g (17 mmol) of the compound V thus prepared was dissolved in 17 ml of absolute ethanol and treated at room temperature with a 33% solution of methylamine in 55 ml of ethanol. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
11.6 g | With potassium carbonate; In 1,4-dioxane; water; at 0 - 20℃; for 3h; | 6.01.16.03 2-Amino-6,7-dihydro-4H-thiazolo(5,4-c)pyridine-5-carboxylic acid tert-butyl ester 15.8 g <strong>[97817-23-7]4,5,6,7-tetrahydro-thiazolo(5,4-c)pyridin-2-ylamine</strong> and 100 mL dioxane was added to 15.2 g potassium carbonate in 158 mL water. 13.1 g di tert-butyl dicarbonate in 58 mL dioxane was added at 0 C. The reaction mixture was allowed to stir for 3 h at ambient temperature. The reaction mixture was diluted with water and the solid was filtered through silica gel, washed with water (2*50 mL) to afford the desired product. The filtrate was concentrated, diluted with waterand extracted with ethyl acetat. The organic layer was dried over magnesium sulfate and concentrated to afford 11.6 g desired product. 1H NMR (400 MHz, DMSO-d6): delta 1.41 (s, 9H), 2.43 (t, 2H), 3.56 (t, 2H), 4.28 (s, 2H), 6.80 (s, 2H) |
11.6 g | With potassium carbonate; In 1,4-dioxane; water; at 0 - 20℃; for 3h; | 6.01.08.03 2-Amino-6,7-dihydro-4H-thiazolo[5,4-c]pyridine-5-carboxylic acid tert-butyl ester 15.8 g <strong>[97817-23-7]4,5,6,7-tetrahydro-thiazolo[5,4-c]pyridin-2-yl-amine</strong> and 100 mL dioxane was added to 15.2 g potassium carbonate in 158 mL water. 13.1 g di tert-butyl dicarbonate in 58 mL dioxane was added at 0 C. The reaction mixture was allowed to stir for 3 h at ambient temperature. The reaction mixture was diluted with water and the solid was filtered through silica gel, washed with water (2*50 mL) to afford the desired product. The filtrate was concentrated, diluted with water and extracted with ethyl acetat. The organic layer was dried over magnesium sulfate and concentrated to afford 11.6 g of the desired product. 1H NMR (400 MHz, DMSO-d6): delta 1.41 (s, 9H), 2.43 (t, 2H), 3.56 (t, 2H), 4.28 (s, 2H), 6.80 (s, 2H); (M+H)+: 256 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
37.8% | With cesium fluoride; In dimethyl sulfoxide; at 120℃; for 36h; | [0128] Method F-Step c: 5-(5'-chloro-3,5-dimethyl-[2,4'-bipyridin]-2'-yl)-4,5,6,7- tetrahydrothiazolo[5,4-c]pyridin-2-amine [0129] 2',5'-Dichloro-3,5-dimethyl-2,4'-bipyridine (180 mg, 0.7 mmol) was dissolved in DMSO (lmL) followed by addition of CsF (152mg, lmmol) and 4,5,6,7- tetrahydrothiazolo[5,4-c]pyridin-2-amine (55mg, 0.35mmol). The mixture was stirred at 120 C for 36 hours. Then the mixture was portioned between ethyl acetate (10 mL) and water (5 mL), washed with brine (5 mL). The organic layer was dried over Na2S04 and concentrated under reduced pressure, purified by silica gel column chromatography ( MeOH:CH2Cl2 = 1:100) to give a yellow oil (50mg, 37.8%). FontWeight="Bold" FontSize="10" H NMR (400 MHz, CDC13) delta 8.35 (s, 1H), 8.21 (s, 1H), 7.44 (s, 1H), 6.65 (s, 1H), 4.56 (s, 2H), 3.86 (s, 2H), 2.75 (s, 2H), 2.38 (s, 3H), 2.17 (s, 3H); ESI-MS(m z): 371.8[M+1]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
87% | With hydrogenchloride; In ethyl acetate; at 20℃; for 3h; | [0126] Method F-Step b: 4,5,6,7-tetrahydrothiazolo[5,4-c]pyridin-2-amine [0127] Tert-butyl 2-amino-6,7-dihydrothiazolo[5,4-c]pyridine-5(4H)-carboxylate(200 mg, 0.78 mmol) was dissolved in 3M HCl/ethyl acetate (3 mL). The mixture was stirred at room temperature for 3 hours, then the solvent was removed by vacuum, and the residue was portioned between CH2CI2 (20 mL) and saturated aqueous sodium bicarbonate (5 mL), the organic layer was separated, dried over Na2S04 and concentrated to give a white solid (105mg, 87%). |
With trifluoroacetic acid; In dichloromethane; at 20℃; for 1h; | The confirmed TR-03a was then treated with 1 : 1 ratio ofdichloromethane and trifluoroacetic acid and stirred for 1 hat room temperature. The reaction mixture was concentratedand washed with water and diethyl ether. Then the reactionmixture was dissolved in dichloromethane, washed with water and brine, and concentrated by drying over anhydrous Na2SO4 to obtain TR-03. The purity of the compound wasconfirmed by NMR spectra; 1H NMR (300MHz, DMSO-d6) delta= 2.32 (t, 2H, J = 5.4Hz), 2.86 (t, 2H, J = 5.4Hz), 3.59 (s,2H), 6.63 (s, 2H, NH2). | |
With hydrogenchloride; In 1,4-dioxane; water; at 20℃; for 3h; | To a solution of compound 20q (1.42 g, 5.6 mmol) indioxane (5 mL) was added 10 mL 4 N hydrochloric acid in dioxane.The resulting mixture was stirred at room temperature for 3 h. Thereaction mixture was filtered and solid was washed with ethylacetate, then dried under vacuum to obtain the hydrochloride 20r,which was used in the next step without further purification. |
With trifluoroacetic acid; In dichloromethane; at 5℃; for 2h; | Step (2), shown in the structural formula (CAS: 365996-05-0)2-Amino-6,7-dihydrothiazolo[5,4-c]pyridine-5(4H)-carboxylic acid tert-butyl ester (80.00 g, 303.91 mmol)As raw material, it was mixed with 300 mL of trifluoroacetic acid in 300 mL of dichloromethane, reacted at 5 C for 2 h, concentrated, without purification.Directly obtained as shown in the structural formula (CAS: 97817-23-7)4,5,6,7-tetrahydrothiazole [5,4-C]pyridin-2-amine (303.91 mmol, yield 100%); |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
To a solution of 20r inacetonitrile (25 mL) was added potassium carbonate (1.53 g,11.1 mmol), followed by the addition of dimethylformamide (2.90 g,11.1 mmol). The mixture was stirred at 0 C for 1 h under atmosphere.Then N,N-dimethylcarbamoyl chloride (0.60 g, 5.56 mmol)was added dropwise at 0 C. The reaction mixture was stirredovernight at room temperature.Water was added, and the reactionmixture was partitioned between ethyl acetate and water. Theorganic layer was washed with water and brine successively, driedover anhydrous sodium sulfate, and concentrated in vacuum toobtain the desired product as a beige solid (0.40 g), mp 210e211 C.Overall yield of the two steps: 32%. 1H NMR (300 MHz, DMSO-d6)d 6.77 (s, 2H), 4.11 (s, 2H), 3.50e3.44 (m, 2H) 2.75 (s, 6H), 2.69e2.54(m, 2H). MS (ESI) m/z: 227.1 [MH]. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
54% | With N-ethyl-N,N-diisopropylamine; In tetrahydrofuran; at 20℃; | To a mixture of <strong>[97817-23-7]4,5,6,7-tetrahydro[1,3]thiazolo[5,4-c]pyridin-2-amine</strong> (50 mg, 0.322 mmol) and DIPEA (0.072 mL, 0.418 mmol) in THE (3 mL), 2-iodoacetamide (65 mg, 0.354 mmol) was added and the reaction let under stirring at rt overnight. After solvent removal under reduced pressure, the title compound was isolated by column chromatography (eluant DCM:MeOH = 90:10) as white solid (37 mg, 54%).NMR (500 MHz, DMSO-d6) ppm 2.73 (t, J=5.72 Hz, 2 H) 3.03 (s, 2 H) 3.46 (s, 2 H) 6.70 (br. s., 2 H) 7.12 (br. s.,H) 7.23 (br. s., 1 H).HRMS (ESI+): calcd. for 08H13N40S [M + H] 213.0805; found 213.0799. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In dichloromethane; at 5℃; for 1h; | Step (3), using 4,5,6,7-tetrahydrothiazole [5,4-C]pyridin-2-amine (303.91 mmol) represented by the structural formula (CAS: 97817-23-7) as a raw material,Mix well with triethylamine (92.25 g, 911.69 mmol) in dichloromethane (DCM).Benzyl chloroformate (57.03 g, 334.29 mmol) of the formula (CAS: 501-53-1) was added dropwise at 5 C to obtain a reaction mixture, and then the reaction mixture was stirred for 1 h.The reaction mixture was quenched with additional 500 mL of water and then extracted three times with 200 mL dichloromethane (DCM).The organic phase obtained by the extraction is washed once with water and brine, dried over anhydrous sodium sulfate, filtered and concentrated to give a crude product.The crude product was beaten with 100 mL of ethyl acetate to give the final product as a yellow solid.2-Amino-5-CBZ-4,5,6,7-tetrahydrothiazolo[5,4-C]pyridine, the structure identification data is as follows: |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
General procedure: HATU (90 mg, 0.24 mmol) was added to a solution of 1g (60 mg, 0.19) in DMA (0.75 mL) at 0 C. After 20 min, tert-butylamine (20 mg, 0.28) and DIPEA (50 mg, 0.38 mmol) in DMA (0.4 mL) were added. The reaction mixture was stirred at rt for 20 hrs. The reaction mixture was quenched with aqueous TFA (4%, 0.4 mL), then, extracted with EtOAc (10 mL). The organic layer was washed with water and brine, concentrated in vacuo, then, purified by reverse phase chromatography eluted with ACN and water, and dried using lyophilization to afford the title product as white solid. ESI-MS, m/z 360 (MH)+. |