(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
With sodium hydroxide In methanol at 25 - 30℃; for 5h; immobilized enzyme, pH 6.8; | 81% |
Trimethyl borate
methyl bisulfate
7-Aminocephalosporanic acid
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
In methanol; N,N-dimethyl-formamide at 0 - 20℃; for 5h; | 66.88% |
methanol
7-Aminocephalosporanic acid
A
6t-amino-(5ar)-5a,6-dihydro-3H,4H-azeto[2,1-b]furo[3,4-d][1,3]thiazine-1,7-dione
B
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
With methanesulfonic acid; trifluorormethanesulfonic acid at 13 - 14℃; for 0.75h; Yield given. Yields of byproduct given; |
7-Aminocephalosporanic acid
A
6t-amino-(5ar)-5a,6-dihydro-3H,4H-azeto[2,1-b]furo[3,4-d][1,3]thiazine-1,7-dione
B
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
With methanesulfonic acid; trifluorormethanesulfonic acid In methanol at 13 - 14℃; for 0.75h; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
methanol
7-Aminocephalosporanic acid
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
Stage #1: methanol; 7-Aminocephalosporanic acid; boron trifluoride In sulfolane Stage #2: With triethylamine In sulfolane; methanol; water | |
With methanesulfonic acid at 5 - 12℃; Reagent/catalyst; Temperature; |
(6R,7R)-7-amino-3-hydroxymethyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid
trimethyl orthoformate
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
With methanesulfonic acid In acetonitrile at 5 - 40℃; Reagent/catalyst; Solvent; | |
Stage #1: trimethyl orthoformate With boron trifluoride diethyl etherate In acetonitrile at -20 - 25℃; for 0.916667h; Stage #2: (6R,7R)-7-amino-3-hydroxymethyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid In acetonitrile at 25℃; Temperature; |
Trimethyl borate
(6R,7R)-7-amino-3-hydroxymethyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
With methanesulfonic acid at 5 - 40℃; |
(6R,7R)-7-amino-3-hydroxymethyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid
dimethyl sulfate
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
With methanesulfonic acid at 5 - 40℃; |
Methyl formate
(6R,7R)-7-amino-3-hydroxymethyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
With methanesulfonic acid at 5 - 40℃; |
Dimethoxymethane
(6R,7R)-7-amino-3-hydroxymethyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
With methanesulfonic acid at 5 - 40℃; |
Trimethyl borate
7-Aminocephalosporanic acid
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
Stage #1: 7-Aminocephalosporanic acid With 1H-imidazole; 1,1,1,3,3,3-hexamethyl-disilazane In dimethyl sulfoxide at 30 - 35℃; for 1h; Inert atmosphere; Stage #2: Trimethyl borate With methanesulfonic acid In methanol; dimethyl sulfoxide at 0 - 5℃; Concentration; Solvent; Reagent/catalyst; | 43 g |
(Z)-S-benzo[d]thiazol-2-yl 2-(2-aminothiazol-4-yl)-2-(methoxyimino)ethanethioate
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
cefpodoxime
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran at -5 - 5℃; for 2h; | 82.86% |
Stage #1: (Z)-S-benzo[d]thiazol-2-yl 2-(2-aminothiazol-4-yl)-2-(methoxyimino)ethanethioate; (6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid With triethylamine In methanol at 8 - 12℃; Stage #2: With sulfuric acid In methanol; water at 0 - 20℃; pH=2.4 - 2.5; Product distribution / selectivity; | |
With triethylamine In methanol; water at 15 - 20℃; | 81 mg |
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran; water at 20℃; for 2h; Cooling with ice; | 69% |
1-iodoethyl 2,2-dimethylpropionate
C35H33N3O6S2
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
Yield given. Multistep reaction. Further byproducts given. Yields of byproduct given. Title compound not separated from byproducts; |
1-iodoethyl 2,2-dimethylpropionate
C35H33N3O6S2
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene; triethylamine 1.) CH2Cl2, 15 deg C, 30 min; acetone, 0-5 deg C, 30 min, 2.) acetone, 20 deg C, 10 min; 20 deg C, 1 h; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts; | |
With 1,8-diazabicyclo[5.4.0]undec-7-ene; triethylamine 1.) CH2Cl2, 15 deg C, 30 min; acetone, 0-5 deg C, 30 min, 2.) acetone, 20 deg C, 10 min; 20 deg C, 1 h; Yield given. Multistep reaction. Yields of byproduct given; |
C35H33N3O6S2
2,2-dimethyl-propionic acid (RS)-1-bromo-ethyl ester
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene; triethylamine 1.) CH2Cl2, 15 deg C, 30 min; acetone, 0-5 deg C, 30 min, 2.) acetone, 20 deg C, 27 h; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts; | |
With 1,8-diazabicyclo[5.4.0]undec-7-ene; triethylamine 1.) CH2Cl2, 15 deg C, 30 min; acetone, 0-5 deg C, 30 min, 2.) acetone, 20 deg C, 27 h; Yield given. Multistep reaction. Yields of byproduct given; |
C35H33N3O6S2
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
Yield given. Multistep reaction. Further byproducts given. Yields of byproduct given. Title compound not separated from byproducts; |
C35H33N3O6S2
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
C
(Z)-2-Hydroxyimino-2-(2-triphenylmethylaminothiazol-4-yl)-acetic acid
Conditions | Yield |
---|---|
With triethylamine 1.) CH2Cl2, 15 deg C, 30 min, 2.) acetone, 0-5 deg C, 30 min; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
2,2-dimethyl-propionic acid (RS)-1-bromo-ethyl ester
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene In acetone 1.) r.t., 15 min, 2.) r.t., 4 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts; | |
With 1,8-diazabicyclo[5.4.0]undec-7-ene In acetone 1.) r.t., 15 min, 2.) r.t., 4 h; Yield given. Yields of byproduct given; |
chloro-trimethyl-silane
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
With 1,1,1,3,3,3-hexamethyl-disilazane In dichloromethane for 3h; Heating; |
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 1,1,1,3,3,3-hexamethyldisilazane / CH2Cl2 / 3 h / Heating 2: 28 percent / CH2Cl2 / 2 h / -25 - -20 °C View Scheme |
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 1,1,1,3,3,3-hexamethyldisilazane / CH2Cl2 / 3 h / Heating 2: 64 percent / CH2Cl2 / 2 h / -25 - -20 °C View Scheme |
1-iodoethyl isopropyl carbonate
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane; ethyl acetate |
1-iodoethyl isopropyl carbonate
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
1-(Isopropoxycarbonyloxy)ethyl (6R,7R)-7-amino-3-methoxymethyl-3-cephem-4-carboxylate p-toluenesulfonate
Conditions | Yield |
---|---|
With p-toluenesulfonic acid monohydrate; 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane; di-isopropyl ether; ethyl acetate |
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
cefpodoxime
Conditions | Yield |
---|---|
Stage #1: (benzothiazol-2-yl)-2-(2-aminothiazol-4-yl)-Z-2-methoxyimino-thioacetate; (6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid With triethylamine In methanol; water at 15 - 20℃; Stage #2: With sulfuric acid In methanol; water |
2-(2-amino-1,3-thiazol-4-yl)-1-(1,3-benzothiazol-2-ylsulfanyl)-2-(methoxyimino)ethan-1-one
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
cefpodoxime
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 5 - 25℃; pH=8 - 9; Temperature; |
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran; dichloromethane at 20 - 25℃; for 5h; | 16.2 g |
(6R,7R)-7-amino-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
cefpodoxime
Conditions | Yield |
---|---|
With triethylamine In methanol at -30 - 0℃; for 0.5h; Solvent; |
The CAS register number of 7-AMCA is 24701-69-7. It also can be called as 7-Amino-3-methoxymethyl-3-cephem-4-carboxylic acid and 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylicacid, 7-amino-3-(methoxymethyl)-8-oxo-, (6R,7R)-. The molecular formula about this chemical is C9H12N2O4S and the molecular weight is 244.27. It belongs to the Amines.
Physical properties about 7-AMCA are: (1)ACD/LogP: 0.53; (2)#H bond acceptors: 6; (3)#H bond donors: 3; (4)#Freely Rotating Bonds: 4; (5)Polar Surface Area: 118.16Å2; (6)Index of Refraction: 1.663; (7)Molar Refractivity: 58.06 cm3; (8)Molar Volume: 156.6 cm3; (9)Polarizability: 23.01x10-24cm3; (10)Surface Tension: 76.6 dyne/cm; (11)Enthalpy of Vaporization: 85.63 kJ/mol; (12)Boiling Point: 511.4 °C at 760 mmHg; (13)Vapour Pressure: 7.72E-12 mmHg at 25°C.
You can still convert the following datas into molecular structure:
(1)SMILES: COCC1=C(SC2C(C(=O)N2C1)N)C(=O)O
(2)InChI: InChI=1/C9H12N2O4S/c1-15-3-4-2-11-7(12)5(10)8(11)16-6(4)9(13)14/h5,8H,2-3,10H2,1H3,(H,13,14)/t5?,8-/m0/s1
(3)InChIKey: WVPBQESNCHTWKX-DWHDZERNBF
(4)Std. InChI: InChI=1S/C9H12N2O4S/c1-15-3-4-2-11-7(12)5(10)8(11)16-6(4)9(13)14/h5,8H,2-3,10H2,1H3,(H,13,14)/t5?,8-/m0/s1
(5)Std. InChIKey: WVPBQESNCHTWKX-DWHDZERNSA-N
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