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CAS No. : | 25830-77-7 | MDL No. : | MFCD00067324 |
Formula : | C13H9NO5 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | ICDLEMPZXFCQEB-VIFPVBQESA-N |
M.W : | 259.21 | Pubchem ID : | 11807393 |
Synonyms : |
|
Num. heavy atoms : | 19 |
Num. arom. heavy atoms : | 6 |
Fraction Csp3 : | 0.23 |
Num. rotatable bonds : | 1 |
Num. H-bond acceptors : | 5.0 |
Num. H-bond donors : | 0.0 |
Molar Refractivity : | 65.32 |
TPSA : | 80.75 Ų |
GI absorption : | High |
BBB permeant : | No |
P-gp substrate : | No |
CYP1A2 inhibitor : | No |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -7.24 cm/s |
Log Po/w (iLOGP) : | 1.37 |
Log Po/w (XLOGP3) : | 0.91 |
Log Po/w (WLOGP) : | 0.13 |
Log Po/w (MLOGP) : | 1.28 |
Log Po/w (SILICOS-IT) : | 1.34 |
Consensus Log Po/w : | 1.01 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 0.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -2.19 |
Solubility : | 1.68 mg/ml ; 0.00648 mol/l |
Class : | Soluble |
Log S (Ali) : | -2.19 |
Solubility : | 1.67 mg/ml ; 0.00644 mol/l |
Class : | Soluble |
Log S (SILICOS-IT) : | -2.74 |
Solubility : | 0.47 mg/ml ; 0.00181 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 3.0 alert |
Leadlikeness : | 0.0 |
Synthetic accessibility : | 2.37 |
Signal Word: | Warning | Class: | |
Precautionary Statements: | P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313 | UN#: | |
Hazard Statements: | H315-H319 | Packing Group: | |
GHS Pictogram: |
* 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 |
---|---|---|
54% | Stage #1: phthalic anhydride; L-glutamic acid at 180℃; Stage #2: With acetic anhydride | |
at 140 - 150℃; Erhitzen des Reaktionsprodukts mit Acetanhydrid auf 100grad; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With acetic acid anschliessend Behandeln mit N2H4+H2O in wss. NaHCO3; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
82% | With acetic anhydride at 100℃; | |
82% | With acetic anhydride at 110℃; | |
76% | Stage #1: N-phthaloyl-L-glutamic acid With acetic anhydride at 65℃; for 0.25h; Stage #2: at 20℃; for 2h; | I.3 N-phthaloyl-L-glutamic acid (10.0 g, 36.1 mmol) obtained in Step 2 in about 40 ml of acetic anhydride was taken in a 250 ml RB flask equipped with a magnetic stirrer and CaCl2 drying guard tube. The solution was heated to 65° C. for about 15 min. A small quantity of concentrated sulfuric acid (300 μL) was added to obtain a clear solution within a short time. The reaction mixture was stirred for another 2 hrs at room temperature. The resultant white precipitate was cooled and filtered. The solid was washed with diethyl ether to remove traces of acetic acid/acetic anhydride. The yield of N-Phthaloyl-L-glutamic anhydride was 7.1 g (76%). The melting point of N-Phthaloyl-L-glutamic anhydride was 196-198° C. and the specific rotation of N-Phthaloyl-L-glutamic anhydride was -42° (c=3, dioxane). |
74% | With acetic anhydride at 100℃; | |
73% | With acetic anhydride at 100℃; for 0.333333h; | |
71% | With dicyclohexyl-carbodiimide In tetrahydrofuran | |
69% | With acetic anhydride for 0.166667h; Heating; | |
65.3% | With acetic anhydride; toluene-4-sulfonic acid for 0.333333h; Reflux; | 1-3 Add in a 250mL three-neck bottle N-phthaloyl-L-glutamic acid 71g,0.9 g of p-toluenesulfonic acid and 150 mL of acetic anhydride were heated to reflux reaction, and kept for 20 minutes, and the reaction was completed.The reaction solution was naturally stirred and cooled to room temperature, and a white solid was precipitated. The solid was collected by suction, and the solid was collected without purification. The mixture was dried at 80 ° C for 5 h to obtain 43.4 g of a dry product, yield 65.3%, purity 98.6%, melting point.192-193 ° C. |
With acetic anhydride | ||
With dicyclohexyl-carbodiimide In tetrahydrofuran for 2h; Ambient temperature; | ||
With acetic anhydride at 100℃; | ||
129.5 g | With acetic anhydride at 105℃; for 0.333333h; | |
With acetic anhydride |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1,4-dioxane |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1,4-dioxane Behandeln des Reaktionsprodukts mit N2H4+H2O in wss.Na2CO3; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1,4-dioxane; methanol |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With methanol at -40℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With methanol |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With water | ||
Multi-step reaction with 2 steps 1: 98.4 percent / dioxane / 3 h / Ambient temperature; 2.)reflux, 12 h 2: 70 percent / concd. HCl / acetic acid / 2 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With acetic acid at 60 - 70℃; for 0.5h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine In tetrahydrofuran for 2h; Ambient temperature; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine In tetrahydrofuran for 2h; Ambient temperature; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine In tetrahydrofuran for 2h; Ambient temperature; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine In tetrahydrofuran for 2h; Ambient temperature; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
99% | In 1,4-dioxane at 60℃; for 2h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
93% | In 1,4-dioxane at 60℃; for 2h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | In 1,4-dioxane for 72h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | With citric acid 1) dioxane, 72 h, 2) water, AcOEt; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
97% | In chloroform for 3h; Ambient temperature; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine at 0℃; Yield given. Yields of byproduct given; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
98.4% | In 1,4-dioxane for 3h; Ambient temperature; 2.)reflux, 12 h; | |
64% | In tetrahydrofuran for 2h; Heating; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
70% | In chloroform at 50℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
91% | In chloroform at 50℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
61% | In chloroform at 50℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
78% | In chloroform at 50℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
72% | In chloroform at 50℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
82% | In chloroform at 50℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
58% | In chloroform at 50℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
93% | In chloroform at 50℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
80% | In chloroform at 50℃; for 1h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
80% | In toluene for 24h; Heating; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
65% | In dimethyl sulfoxide at 20℃; for 24h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
100% | With acetic acid In benzene at 65℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In acetonitrile at 65 - 70℃; for 5h; | I.4 N-Phthaloyl-L-glutamic anhydride (7.5 g, 28.9 mmol), Se-Methyl-L-selenocysteine (5 g, 27.5 mmol) and acetonitrile (75 ml) were taken in a clean 250 ml RB flask. The mixture was stirred and heated to 65° C. Water (7.5 ml) was then added and the reaction mixture was kept at 65-70° C. for 5 hr. A clear solution was obtained. TLC of this clear solution (Butanol:water:acetic acid 6:2:2) showed near absence of starting materials. The reaction mixture was then cooled and any solid particles were removed by filtration. The filtrate was concentrated to get the product γ-(N-Phthaloyl-L-Glutamyl)-Se-methyl-L-selenocysteine weighing around 12-13 g. The Proton NMR structure of the product γ-(N-Phthaloyl-L-Glutamyl)-Se-methyl-L-selenocysteine is represented in FIG. 1b. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In water; acetonitrile; at 65 - 70℃; for 7 - 8h; | N-Phthaloyl-L-glutamic anhydride (13.25 g, 51.1 mmol) as obtained in Example I; Step 3 (represented by Equation 3), and L-selenomethionine (10 g, 51.0 mmol) were taken in a 500 ml RB flask containing acetonitrile (150 ml). The mixture was stirred with heating at 65 C. Water (30 ml) was added to the reaction mixture and the temperature was maintained at 65-70 C. for about 7-8 hrs. A clear solution was obtained. The completion of the reaction was evaluated by TLC. The reaction mixture was cooled and filtered to remove undissolved particles. The filtrate was concentrated to give the product, gamma-(N-phthaloyl-L-Glutamyl)-L-selenomethionine weighing about 25 g. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 140 °C 2: 129.5 g / Ac2O / 0.33 h / 105 °C | ||
Multi-step reaction with 2 steps 1: acetic acid 2: acetic acid anhydride | ||
Multi-step reaction with 2 steps 1: sodium carbonate / water / 12 h / 0 - 20 °C 2: acetic anhydride / 110 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 100 percent / AcOH / benzene / 65 °C 2: 100 percent / diethyl ether 3: hydrazine / methanol / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 100 percent / AcOH / benzene / 65 °C 2: 100 percent / diethyl ether |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 64 percent / tetrahydrofuran / 2 h / Heating 2: N-methylmorpholine / tetrahydrofuran / 0.02 h / -15 °C 3: NaBH4 / tetrahydrofuran; H2O / 0 h / -15 °C 4: 68 percent / PCC; molecular sieves 4 Angstroem / CH2Cl2 / 1 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 64 percent / tetrahydrofuran / 2 h / Heating 2: N-methylmorpholine / tetrahydrofuran / 0.02 h / -15 °C 3: NaBH4 / tetrahydrofuran; H2O / 0 h / -15 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 64 percent / tetrahydrofuran / 2 h / Heating 2: N-methylmorpholine / tetrahydrofuran / 0.02 h / -15 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 64 percent / tetrahydrofuran / 2 h / Heating 2: N-methylmorpholine / tetrahydrofuran / 0.02 h / -15 °C 3: NaBH4 / tetrahydrofuran; H2O / 0 h / -15 °C 4: 68 percent / PCC; molecular sieves 4 Angstroem / CH2Cl2 / 1 h / 20 °C 5: TFA / CH2Cl2 / 2 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 64 percent / tetrahydrofuran / 2 h / Heating 2: N-methylmorpholine / tetrahydrofuran / 0.02 h / -15 °C 3: NaBH4 / tetrahydrofuran; H2O / 0 h / -15 °C 4: 68 percent / PCC; molecular sieves 4 Angstroem / CH2Cl2 / 1 h / 20 °C 5: TFA / CH2Cl2 / 2 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 1.) BSTFA / 1.) CH3CN, 50 min, 2.) CH3CN 2: 2.0 M NH2NH2*H2O, Et3N / methanol; H2O |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 1.) BSTFA / 1.) CH3CN, 50 min, 2.) CH3CN 2: 2.0 M NH2NH2*H2O, Et3N / methanol; H2O 3: 1.) Hg(OAc)2, 2.) H2S (gas) / 1.) H2O, 38-41 deg C, 2.5 h, 2.) H2O, RT, 45 min 4: aq. NaHCO3 / 0.03 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 1.) BSTFA / 1.) CH3CN, 50 min, 2.) CH3CN 2: 2.0 M NH2NH2*H2O, Et3N / methanol; H2O 3: 1.) Hg(OAc)2, 2.) H2S (gas) / 1.) H2O, 38-41 deg C, 2.5 h, 2.) H2O, RT, 45 min 4: H2O |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 1.) pyridine, 2.) DCC / 1.) RT, overnight, 2.) 2 days 2: 89 percent / H2 / 10percent Pd/C / methanol / 2 h 3: 80 percent / bromoacetophenone, DMAP, Et3N / acetonitrile / 2 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 1.) pyridine, 2.) DCC / 1.) RT, overnight, 2.) 2 days 2: 89 percent / H2 / 10percent Pd/C / methanol / 2 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: acetonitrile / 2 h / Heating 2: 63 percent / N2H4 / ethanol / 2 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 7 steps 1: 85 percent / 2) citric acid / 1) dioxane, 72 h, 2) water, AcOEt 2: 100 percent / diethyl ether; ethyl acetate 3: 70 percent / Raney nickel, AcOH / ethanol / 2 h / Heating 4: 60 percent / PCC / CH2Cl2 / 2 h 5: 60 percent / NaOAc / ethanol; H2O / 8 h / Ambient temperature 6: 80 percent / dimethylformamide / 90 °C 7: 85 percent / N2H4*H2O / ethanol / 1 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1: 85 percent / 2) citric acid / 1) dioxane, 72 h, 2) water, AcOEt 2: 100 percent / diethyl ether; ethyl acetate 3: 70 percent / Raney nickel, AcOH / ethanol / 2 h / Heating 4: 60 percent / PCC / CH2Cl2 / 2 h 5: 60 percent / NaOAc / ethanol; H2O / 8 h / Ambient temperature 6: 80 percent / dimethylformamide / 90 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 85 percent / 2) citric acid / 1) dioxane, 72 h, 2) water, AcOEt 2: 100 percent / diethyl ether; ethyl acetate 3: 70 percent / Raney nickel, AcOH / ethanol / 2 h / Heating 4: 60 percent / PCC / CH2Cl2 / 2 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 15 steps 1: 85 percent / 2) citric acid / 1) dioxane, 72 h, 2) water, AcOEt 2: 100 percent / diethyl ether; ethyl acetate 3: 70 percent / Raney nickel, AcOH / ethanol / 2 h / Heating 4: 60 percent / PCC / CH2Cl2 / 2 h 5: 60 percent / NaOAc / ethanol; H2O / 8 h / Ambient temperature 6: 80 percent / dimethylformamide / 90 °C 7: 85 percent / N2H4*H2O / ethanol / 1 h / Heating 8: 85 percent / 0.2N NaOH / dioxane / 2 h / Ambient temperature 9: dicyclohexylcarbodiimide / dioxane; ethyl acetate 10: Et3N / dioxane; dimethylformamide / 4 h / Ambient temperature 11: HCl, HCO2H 12: 63 percent / Et3N / dimethylformamide 13: HCl, HCO2H / ethyl acetate 14: 56 percent / Et3N, HONb, dicyclohexylcarbodiimide / dimethylformamide / 20 h / 0 deg C to r.t. 15: 9.8 mg / HF, anisole / 1 h / 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 14 steps 1: 85 percent / 2) citric acid / 1) dioxane, 72 h, 2) water, AcOEt 2: 100 percent / diethyl ether; ethyl acetate 3: 70 percent / Raney nickel, AcOH / ethanol / 2 h / Heating 4: 60 percent / PCC / CH2Cl2 / 2 h 5: 60 percent / NaOAc / ethanol; H2O / 8 h / Ambient temperature 6: 80 percent / dimethylformamide / 90 °C 7: 85 percent / N2H4*H2O / ethanol / 1 h / Heating 8: 85 percent / 0.2N NaOH / dioxane / 2 h / Ambient temperature 9: dicyclohexylcarbodiimide / dioxane; ethyl acetate 10: Et3N / dioxane; dimethylformamide / 4 h / Ambient temperature 11: HCl, HCO2H 12: 63 percent / Et3N / dimethylformamide 13: HCl, HCO2H / ethyl acetate 14: 56 percent / Et3N, HONb, dicyclohexylcarbodiimide / dimethylformamide / 20 h / 0 deg C to r.t. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 85 percent / 2) citric acid / 1) dioxane, 72 h, 2) water, AcOEt 2: 100 percent / diethyl ether; ethyl acetate 3: 70 percent / Raney nickel, AcOH / ethanol / 2 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 8 steps 1: 85 percent / 2) citric acid / 1) dioxane, 72 h, 2) water, AcOEt 2: 100 percent / diethyl ether; ethyl acetate 3: 70 percent / Raney nickel, AcOH / ethanol / 2 h / Heating 4: 60 percent / PCC / CH2Cl2 / 2 h 5: 60 percent / NaOAc / ethanol; H2O / 8 h / Ambient temperature 6: 80 percent / dimethylformamide / 90 °C 7: 85 percent / N2H4*H2O / ethanol / 1 h / Heating 8: 85 percent / 0.2N NaOH / dioxane / 2 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1: 85 percent / 2) citric acid / 1) dioxane, 72 h, 2) water, AcOEt 2: 100 percent / diethyl ether; ethyl acetate 3: 70 percent / Raney nickel, AcOH / ethanol / 2 h / Heating 4: 60 percent / PCC / CH2Cl2 / 2 h 5: 0.5N HCl, NaOAc / ethanol / 20 h / Ambient temperature 6: dimethylformamide / 26 h / 90 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 85 percent / 2) citric acid / 1) dioxane, 72 h, 2) water, AcOEt 2: 100 percent / diethyl ether; ethyl acetate |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 85 percent / 2) citric acid / 1) dioxane, 72 h, 2) water, AcOEt 2: 100 percent / diethyl ether; ethyl acetate 3: 70 percent / Raney nickel, AcOH / ethanol / 2 h / Heating 4: 60 percent / PCC / CH2Cl2 / 2 h 5: 0.5N HCl, NaOAc / ethanol / 20 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 85 percent / 2) citric acid / 1) dioxane, 72 h, 2) water, AcOEt 2: 100 percent / diethyl ether; ethyl acetate 3: 70 percent / Raney nickel, AcOH / ethanol / 2 h / Heating 4: 60 percent / PCC / CH2Cl2 / 2 h 5: 60 percent / NaOAc / ethanol; H2O / 8 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 9 steps 1: 85 percent / 2) citric acid / 1) dioxane, 72 h, 2) water, AcOEt 2: 100 percent / diethyl ether; ethyl acetate 3: 70 percent / Raney nickel, AcOH / ethanol / 2 h / Heating 4: 60 percent / PCC / CH2Cl2 / 2 h 5: 60 percent / NaOAc / ethanol; H2O / 8 h / Ambient temperature 6: 80 percent / dimethylformamide / 90 °C 7: 85 percent / N2H4*H2O / ethanol / 1 h / Heating 8: 85 percent / 0.2N NaOH / dioxane / 2 h / Ambient temperature 9: dicyclohexylcarbodiimide / dioxane; ethyl acetate |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 8 steps 1: 85 percent / 2) citric acid / 1) dioxane, 72 h, 2) water, AcOEt 2: 100 percent / diethyl ether; ethyl acetate 3: 70 percent / Raney nickel, AcOH / ethanol / 2 h / Heating 4: 60 percent / PCC / CH2Cl2 / 2 h 5: 60 percent / NaOAc / ethanol; H2O / 8 h / Ambient temperature 6: 80 percent / dimethylformamide / 90 °C 7: 85 percent / N2H4*H2O / ethanol / 1 h / Heating 8: 40 percent / NaHCO3 / dioxane; H2O / 3 h / 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 8 steps 1: 85 percent / 2) citric acid / 1) dioxane, 72 h, 2) water, AcOEt 2: 100 percent / diethyl ether; ethyl acetate 3: 70 percent / Raney nickel, AcOH / ethanol / 2 h / Heating 4: 60 percent / PCC / CH2Cl2 / 2 h 5: 60 percent / NaOAc / ethanol; H2O / 8 h / Ambient temperature 6: 80 percent / dimethylformamide / 90 °C 7: Et3N, N-hydroxysuccinimide, WSCD*HCl / dimethylformamide / Ambient temperature 8: 15 mg / N2H4*H2O / dimethylformamide / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 98.4 percent / dioxane / 3 h / Ambient temperature; 2.)reflux, 12 h 2: 10 percent / 1.) hydrazine hydrate, sodium carbonate, 2.) silver carbonate / H2O / 1.) 2 d, 2.) 15 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: Et3N / tetrahydrofuran / 2 h / Ambient temperature 2: NH2NH2*H2O, Na2CO3 / H2O / 4 h / Ambient temperature; pH 8 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: Et3N / tetrahydrofuran / 2 h / Ambient temperature 2: NH2NH2*H2O, Na2CO3 / H2O / 4 h / Ambient temperature; pH 8 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: Et3N / tetrahydrofuran / 2 h / Ambient temperature 2: NH2NH2*H2O, Na2CO3 / H2O / 4 h / Ambient temperature; pH 8 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: Et3N / tetrahydrofuran / 2 h / Ambient temperature 2: NH2NH2*H2O, Na2CO3 / H2O / 4 h / Ambient temperature; pH 8 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: diethyl ether 2: thionyl chloride 3: acetic acid; hydrochloric acid; water 4: acetic acid anhydride | ||
Multi-step reaction with 2 steps 1: acetic acid 2: acetic acid anhydride |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: methanol 2: ueber mehrere Stufen |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: methanol 2: ueber mehrere Stufen |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In methanol; aqueous CH3 OH; water; acetonitrile | Preparation of 3-(γ-L-Glutamyl)-2(R,S)-Methylthiazolidine-4(R)-Carboxylic Acid Ethyl Eester (1a) Preparation of 3-(γ-L-Glutamyl)-2(R,S)-Methylthiazolidine-4(R)-Carboxylic Acid Ethyl Eester (1a) 2(R,S)-Methylthiazolidine-4(R)-carboxylic acid ethyl ester was prepared by the condensation of L-cysteine ethyl ester with acetaldehyde. This involved neutralizing the hydrochloride salt of the former, condensation with acetaldehyde under nitrogen, extraction into ethyl acetate and purification of the product by distillation (b.p. 95°-103° C. at 0.6 mm Hg). To a stirred solution of 2(R,S)-methylthiazolidine-4(R)-carboxylic acid ethyl ester (9.12 g, 52.1 mmol) in dry CH3 CN (90 mL) under a N2 atmosphere was added bis-(trimethylsilyl)trifluoroacetamide (7.5 mL, 7.8 g, 30 mmol) and the mixture was heated under reflux for 50 minutes. After cooling to room temperature, N-phthaloyl-L-glutamic anhydride (13.8 g, 53.1 mmol) was added, followed by dry CH3 CN (35 mL). After 3 days at room temperature, the solvent was evaporated in vacuo, keeping the temperature under 40° C. To the resultant orange oil (37.1 g) were added with stirring under a N2 atmosphere, 1.0M Et3 N in CH3 OH (200 mL) and 2.0M NH2 NH2.H2 O in 50% aqueous CH3 OH (70 mL). After 3 days of stirring, the solvent was evaporated in vacuo, the resultant thick paste was suspended in H2 O (300 mL), and the solvent evaporated again to give 33.1 g of a dark yellow paste. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; potassium carbonate; hydrazine hydrate; acetic acid In tetrahydrofuran; 1,4-dioxane; ethanol; dichloromethane; water | 6 2-(Biphenyl-4-sulfonylamino)-5-(2,3-dihydroindol-1-yl)-5-oxo-pentanecarboxylic acid Example 6 2-(Biphenyl-4-sulfonylamino)-5-(2,3-dihydroindol-1-yl)-5-oxo-pentanecarboxylic acid Stage 1: Reaction of phthaloyl-L-glutamyl anhydride with dihydroindole 1.5 g (0.0058 mol) of phthaloyl-L-glutamyl anhydride were dissolved in 15 ml absolute dioxane, and a solution of 0.813 ml (0.0073 mol) of dihydroindole in 15 ml of dioxane was added dropwise in the course of 10 min. The mixture was heated until the reaction was complete (approximately 5 h, TLC checking) at 40° C., concentrated, and the mixture was entrained a number of times under reduced pressure using dichloromethane. Yield: 2.7 g (product contained approximately 15 mol % of dioxane). Stage 2: Removal of the protecting group 2.43 g of the product from stage 1 were dissolved in 30 ml of ethanol and 0.39 ml (0.0080 mol) of hydrazine hydrate was added. The mixture was stirred at 80° C. for 3 h, concentrated to dryness under reduced pressure, the residue was taken up using 50 ml of 25% strength aqueous acetic acid and the mixture was heated at 80° C. for approximately 10 min. It was then cooled in an ice bath and the resulting precipitate was filtered off with suction, the precipitate was taken up again using acetic acid and this procedure was repeated. The phthalyl hydrazide residue which remained was discarded. The combined filtrates were concentrated, and afforded 0.7 g of product. Stage 3: Introduction of the N-arylsulfonyl radical 0.5 g (0.002 mol) of the product from stage 2 was dissolved in 50 ml of THF/water (1:1) together with 0.45 g (0.0033 mol) of potassium carbonate, and a solution of 0.61 g (0.0024 mol) of biphenylsulfonyl chloride, dissolved in 50 ml of THF, was added dropwise in the course of 20 min. The mixture was stirred at RT until the reaction was complete (approximately 6 to 8 h, TLC checking), extracted once with diethyl ether and acidified to pH 1.5 using 1 N HCl, and the product was extracted a number of times with ethyl acetate, dried and concentrated under reduced pressure. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: 1-indoline; N-phthaloyl-L-glutamic anhydride In 1,3-dioxane at 40℃; for 5h; Stage #2: With hydrazine In ethanol at 80℃; for 3h; Stage #3: 4-diphenylsulfonyl chloride With potassium carbonate In tetrahydrofuran; water at 20℃; for 6 - 8h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: C25H30N2O6 With triethylsilane; triethylamine In tetrahydrofuran at 20℃; for 16h; Stage #2: N-phthaloyl-L-glutamic anhydride With sodium hydrogencarbonate In H2O (water), THF for 0.5h; Stage #3: With citric acid In water | 1.D We dissolved compound E' in THF. We then added, at ambient temperature under a nitrogen atmosphere, 0.02 equivalents of triethylamine and 0.01 equivalents of Pd(OAc)2. A solution of 2.5 equivalents of triethylsilane (Et3SiH) in THF was then added and the resulting black solution was allowed to stir for 16 hours to complete the reaction. We then added a saturated, aqueous solution of sodium bicarbonate followed by a solution of compound F' in THF. After 30 minutes, the layers were separated and the aqueous layer acidified to pH 4.5 with aqueous citric acid. The product in the aqueous layer was then extracted into ethyl acetate. The organic layer was isolated, washed with brine, dried over sodium sulfate and concentrated in vacuo to produce a white foam. This crude product was then recrystallized from MTBE to afford compound G' as a white powder. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
60% | Stage #1: trans,trans-farnesyl-L-cysteine; N-phthaloyl-L-glutamic anhydride With N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 2h; Stage #2: With hydrogenchloride In dichloromethane | 5b To a solution of S-trans, trans-farnesyl-L-cysteine (325 mg, 1 mmol) and N-phthaloyl-L-glutamic anhydride (259 mg, 1 mmol) in CH2Cl2 (10 mL) was added N,N-diisopropyl-ethyl-amine (0.87 mL, 5 mmol). The solution was stirred at room temperature for 2 h. The reaction was quenched with IN HCl (10 mL) and the pH was adjusted to 2.0-3.0. The mixtures were extracted with ethyl acetate (15 mL x 3). The organic layer was dried over Na2SO4 and concentrated in vacuo and the residue was purified by preparative HPLC (350 mg, 60%) to yield Compound C-2, which is identical to the S-R stereoisomer of the Compound C racemate in Examples 5 and 5a. 1H-NMR (500 MHz, CDCl3): δ 1.50 (s, 3H), 1.52 (s, 3H), 1.55 (s, 3H), 1.60 (s, 3H), 1.86-1.98 (m, 8H), 2.33-2.43 (m, 2H), 2.54-2.57 (m, 2H), 2.78 (dd, J = 5.0, 15.0 Hz, IH), 2.91 (dd, J = 5.0, 15.0 Hz, IH), 3.06 (dd, J = 5.0, 10.0 Hz, IH), 3.14 (dd, J = 5.0, 10.0 Hz, IH), 4.65 (dd, J = 5.0, 10.0 Hz, IH), 4.96 (t, J = 5.0 Hz, IH), 5.00 (m, 2H), 5.11 (t, J = 5.0 Hz, IH), 6.79 (d, J = 10.0 Hz, IH), 7.63-7.65 (m, 2H), 7.74-7.76 (m, 2H), 8.00 (broad, 2H). 13C-NMR (125 MHz, CDCl3): δ 16.06, 16.18, 17.76, 25.19, 25.78, 26.47, 26.73, 29.77, 32.59, 32.79, 39.65, 39.72, 51.10, 51.85, 119.37, 123.76, 123.80, 124.36, 131.39, 131.62, 134.40, 135.36, 140.24, 167.75, 172.78, 173.05, 174.51; ES-MS: mass calcd for Chemical Formula: C3IH40N2O7S 584.72. Found (M+) m/z 585.3, (M+Na) m/z 607.3. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
48% | Stage #1: ethyl 2-methyl-[5-(13)C]-thiazolidine-4(R)-carboxylate With 2,2,2-trifluoro-N,N-bis(trimethylsilyl)-acetamide In acetonitrile for 0.833333h; Reflux; Inert atmosphere; Stage #2: N-phthaloyl-L-glutamic anhydride In acetonitrile at 20℃; for 72h; Stage #3: With triethylamine; hydrazine In methanol; water |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
73% | In acetic anhydride at 110℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
55% | With acetic acid at 100℃; for 2h; | (1) Synthesis of Intermediate B Add 600 ml of acetic acid, 130 g (0.5 mol) of compound A, and 82 g (0.45 mol) of 5-amino-2-nitrobenzoic acid in a 2L reaction flask while stirring; the reaction solution is heated to 100° C, and stirring is continued for 2 hours; TLC showed that the reaction was complete. The reaction solution was cooled to room temperature and filtered to obtain 200 g of crude product; the crude product was recrystallized from methanol and water, filtered and vacuum dried to obtain Intermediate B: 110 g, with a yield of 55%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
83.2% | In toluene at 80℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
91% | In toluene at 80℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
76% | In toluene at 80℃; |
Tags: 25830-77-7 synthesis path| 25830-77-7 SDS| 25830-77-7 COA| 25830-77-7 purity| 25830-77-7 application| 25830-77-7 NMR| 25830-77-7 COA| 25830-77-7 structure
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