Benzyl Clavulanate
clavulanic acid
Conditions | Yield |
---|---|
With hydrogen; palladium on activated charcoal In ethanol under 760 Torr; for 0.75h; Ambient temperature; | 84% |
(2RS,5S)-<5-(3)H>Ornithine
B
clavulanic acid
Conditions | Yield |
---|---|
With cultures of Streptomyces clavuligerus (ATCC 27064) in a glycerol-based fermentation medium Product distribution; labelling studies also with incorporation (14)C, acid isolated as p-bromobenzyl ester; |
Conditions | Yield |
---|---|
With cultures of Streptomyces clavuligerus (ATCC 27064) in a glycerol-based fermentation medium Product distribution; labelling studies also with incorporation (14)C, acid isolated as p-bromobenzyl ester; |
clavulanic acid
Conditions | Yield |
---|---|
Streptomyces clavuligerus SC 2; |
Conditions | Yield |
---|---|
Streptomyces clavuligerus; examination of incorporation by labelled <5-(14)C, 5-(3)H>ornithine; |
methyl clavulanate
clavulanic acid
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 70 percent / sodium hydroxide / H2O / 1.17 h / 0 °C 2: 69 percent / dimethylformamide / 1.5 h / Ambient temperature 3: 84 percent / H2 / palladium on carbon / ethanol / 0.75 h / 760 Torr / Ambient temperature View Scheme |
potassium clavulanate
clavulanic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 69 percent / dimethylformamide / 1.5 h / Ambient temperature 2: 84 percent / H2 / palladium on carbon / ethanol / 0.75 h / 760 Torr / Ambient temperature View Scheme |
clavulanic acid
Conditions | Yield |
---|---|
With NADPH at 26℃; pH=7.0; |
N,N-diisopropyl-1,2-ethanediamine
clavulanic acid
Conditions | Yield |
---|---|
In methanol; water; ethyl acetate for 0.25h; | 96% |
In ethyl acetate; isopropyl alcohol | 84% |
In methanol; ethyl acetate | 81% |
Conditions | Yield |
---|---|
In ethyl acetate | 83% |
In ethanol; ethyl acetate for 1h; | 68% |
In ethyl acetate; isopropyl alcohol | 67% |
1-Adamantanamine
clavulanic acid
(2R,5R)-3-[2-Hydroxy-eth-(Z)-ylidene]-7-oxo-4-oxa-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid; compound with adamantan-1-ylamine
Conditions | Yield |
---|---|
In ethyl acetate | 81% |
In ethanol; ethyl acetate | 80% |
In methanol; ethyl acetate for 1h; | 76% |
In ethyl acetate; isopropyl alcohol | 76% |
Conditions | Yield |
---|---|
In ethyl acetate | 81% |
In ethyl acetate; isopropyl alcohol for 1h; | 77% |
In ethanol; ethyl acetate | 43% |
Stage #1: clavulanic acid With ammonium sulfate In water; ethyl acetate at 5℃; pH=1.30; Stage #2: tert-butylamine In methanol; ethyl acetate at 5℃; for 2h; pH-value; Concentration; |
tert-Octylamine
clavulanic acid
(2R,5R)-3-[2-Hydroxy-eth-(Z)-ylidene]-7-oxo-4-oxa-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid; compound with 1,1,3,3-tetramethyl-butylamine
Conditions | Yield |
---|---|
In ethyl acetate | 80% |
In ethyl acetate; isopropyl alcohol for 1h; | 67% |
In ethanol; ethyl acetate | 35% |
clavulanic acid
methyl-4-aza-8-hydroxy-6-oxo-oct-2-enoate
Conditions | Yield |
---|---|
With methanol; diethylamine for 0.166667h; Ambient temperature; | 78% |
Conditions | Yield |
---|---|
In ethanol Ambient temperature; | 75% |
clavulanic acid
9-chloro-9-deoxyclavulanic acid
Conditions | Yield |
---|---|
With pyridine; methanesulfonyl chloride In acetonitrile at 25℃; for 24h; | 75% |
Conditions | Yield |
---|---|
With sodium hydroxide; dicyclohexyl-carbodiimide In tetrahydrofuran; dichloromethane; ethyl acetate | 67% |
Conditions | Yield |
---|---|
In ethanol; ethyl acetate for 0.5h; | 61% |
Conditions | Yield |
---|---|
In tetrahydrofuran Ambient temperature; | 60% |
Conditions | Yield |
---|---|
With dicyclohexyl-carbodiimide In acetonitrile Ambient temperature; | 59% |
Conditions | Yield |
---|---|
In ethanol; ethyl acetate for 1h; | 54% |
In ethyl acetate; isopropyl alcohol | 31% |
In ethyl acetate | 3% |
Conditions | Yield |
---|---|
In ethanol; ethyl acetate for 1h; | 52.6% |
In ethyl acetate; isopropyl alcohol | 52% |
In ethyl acetate | 8% |
2-(2-Hydroxyethyl)pyridine
clavulanic acid
2-(2-pyridyl)ethyl clavulanate
Conditions | Yield |
---|---|
With dicyclohexyl-carbodiimide In acetonitrile Ambient temperature; | 50% |
N,N,N,N,-tetramethylethylenediamine
clavulanic acid
Conditions | Yield |
---|---|
In ethyl acetate; isopropyl alcohol for 1h; | 37% |
In ethyl acetate | 30% |
clavulanic acid
A
methyl (E)-3-(diethylamino)-2-propenoate
B
methyl 3-(2-hydroxyethyl)-pyrrole-4-carboxylate
C
methyl-4-aza-8-hydroxy-6-oxo-oct-2-enoate
Conditions | Yield |
---|---|
With diethylamine In methanol for 48h; Ambient temperature; | A 20% B 14% C 18% |
With Diethyl amine In methanol for 48h; Ambient temperature; | A 20% B 14% C 18% |
Conditions | Yield |
---|---|
With dicyclohexyl-carbodiimide In acetonitrile Ambient temperature; | 17% |
clavulanic acid
Conditions | Yield |
---|---|
With mercury(II) diacetate In 1,2-dimethoxyethane 1) r.t., 15 min, 2) 90-95 deg C (bath), 20 min; | A 5% B 5.5% |
clavulanic acid
(5R)-7-oxo-3-vinyl-4-oxa-1-azabicyclo[3.2.0]hept-2-ene
Conditions | Yield |
---|---|
With N,N-dimethyl-formamide dimethyl acetal In tetrahydrofuran | |
With N,N-dimethyl-formamide dimethyl acetal In tetrahydrofuran for 0.133333h; Ambient temperature; Yield given; | |
With N,N-dimethyl-formamide dimethyl acetal |
benzyl chloroformate
clavulanic acid
1-benzyloxycarbonylamino-4-hydroxybutan-2-one
Conditions | Yield |
---|---|
With hydrogenchloride; water; sodium hydrogencarbonate 1.) 2 h, 2.) water, THF, ice-cooling, 40 min; Yield given. Multistep reaction; |
3-chloro-benzenecarboperoxoic acid
clavulanic acid
(Z)-(3S,5R)-2-(2-hydroxyethylidene)-3-(m-chlorobenzoyloxy)clavam
Conditions | Yield |
---|---|
With dicyclohexyl-carbodiimide In 1,2-dimethoxyethane; dichloromethane 1.) 0 deg C, 3 h, 2.) room temperature, 15 h; | 60 mg |
methanol
clavulanic acid
A
methyl clavulanate
B
(Z)-(2R)-5-(2-hydroxyethylidene)-2-methoxycarbonylmethyl-2,5-dihydro-oxazole
C
(Z)-(3S,5R)-2-(2-hydroxyethylidene)-3-methoxyclavam
Conditions | Yield |
---|---|
With triethylamine at -30℃; for 0.833333h; electrolysis: platinum electrodes, I=200-250 mA; | A 5 mg B 75 mg C 10 mg |
With triethylamine at -30℃; for 0.833333h; electrolysis: platinum electrodes, current 200-250 mA; | A 5 mg B 75 mg C 10 mg |
methanol
clavulanic acid
A
methyl clavulanate
B
(Z)-(3S,5R)-2-(2-hydroxyethylidene)-3-methoxyclavam
C
(E)-(3S,5R)-3-acetoxy-2-formylmethyleneclavam
D
(Z)-(3S,5R)-3-acetoxy-2-formylmethyleneclavam
Conditions | Yield |
---|---|
With triethylamine at -30℃; for 0.833333h; Product distribution; electrolysis, platinum electrodes, current 200-250 mA; reactions of oxidative decarboxylation ( electrolysis, with Pb(OAc)4, decarboxylative rearrangement of diacyl peroxide) of clavulanic acid and its methyl ether; | A 5 mg B 10 mg C n/a D n/a |
lead(IV) tetraacetate
clavulanic acid
A
(Z)-(3S,5R)-3-acetoxy-2-(2-hydroxyethylidene)clavam
B
(Z)-(3S,5R)-3-acetoxy-2-(2-acetoxyethylidene)clavam
C
(E)-(3S,5R)-3-acetoxy-2-formylmethyleneclavam
D
(Z)-(3S,5R)-3-acetoxy-2-formylmethyleneclavam
Conditions | Yield |
---|---|
In 1,2-dimethoxyethane; benzene at 70℃; for 0.333333h; | A 145 mg B 20 mg C n/a D n/a |
In 1,2-dimethoxyethane; benzene at 70℃; for 0.333333h; Yields of byproduct given; | A 145 mg B 20 mg C n/a D n/a |
In 1,2-dimethoxyethane; benzene at 70℃; for 0.333333h; Yield given. Title compound not separated from byproducts; | A 145 mg B 20 mg C n/a D n/a |
Clavulanic acid was discovered around 1974/75 by British scientists working at the drug company Beecham. After several attempts, Beecham finally filed for US patent protection for the drug in 1981, and U.S. Patents 4,525,352, 4,529,720 and 4,560,552 were granted in 1985.
The Clavulanic acid with CAS registry number of 58001-44-8 is also known as 4-Oxa-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 3-(2-hydroxyethylidene)-7-oxo-, (2R,3Z,5R)-. The IUPAC name is (2R,3Z,5R)-3-(2-Hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]heptane-2-carboxylic acid. It belongs to product categories of Antibiotics. Its EINECS registry number is 261-069-2. In addition, the formula is C8H9NO5 and the molecular weight is 199.16. This chemical is a colorless needle-like crystal that soluble in water. It is a beta-lactamase inhibitor and used to overcome resistance in bacteria. What's more, it can be prepared by alkylation and chlorination decarboxylation reaction of 3-methylthiopropyllactam.
Physical properties about Clavulanic acid are: (1)ACD/BCF (pH 5.5): 1; (2)ACD/BCF (pH 7.4): 1; (3)ACD/KOC (pH 5.5): 1; (4)ACD/KOC (pH 7.4): 1; (5)#H bond acceptors: 6; (6)#H bond donors: 2; (7)#Freely Rotating Bonds: 3; (8)Index of Refraction: 1.644; (9)Molar Refractivity: 43.56 cm3; (10)Molar Volume: 120.2 cm3; (11)Surface Tension: 82.2 dyne/cm; (12)Density: 1.65 g/cm3; (13)Flash Point: 283.9 °C; (14)Enthalpy of Vaporization: 94.82 kJ/mol; (15)Boiling Point: 545.8 °C at 760 mmHg; (16)Vapour Pressure: 3.45E-14 mmHg at 25 °C.
Uses of Clavulanic acid: it is used to produce 2-(2-pyridyl)ethyl clavulanate by reaction with 2-pyridin-2-yl-ethanol. The reaction occurs with reagent dicyclohexylcarbodi-imide and solvent acetonitrile with ambient temperature. The yield is about 50%.
When you are using this chemical, please be cautious about it. As a chemical, it is irritating to eyes, respiratory system and skin. During using it, wear suitable protective clothing, gloves and eye/face protection. Avoid contact with skin and eyes. After using it, take off immediately all contaminated clothing. If contact with eyes accidently, rinse immediately with plenty of water and seek medical advice.
You can still convert the following datas into molecular structure:
1. Canonical SMILES: C1C2N(C1=O)C(C(=CCO)O2)C(=O)O
2. Isomeric SMILES: C1[C@@H]2N(C1=O)[C@H](/C(=C/CO)/O2)C(=O)O
3. InChI: InChI=1S/C8H9NO5/c10-2-1-4-7(8(12)13)9-5(11)3-6(9)14-4/h1,6-7,10H,2-3H2,(H,12,13)/b4-1-/t6-,7-/m1/s1
4. InChIKey: HZZVJAQRINQKSD-PBFISZAISA-N
The toxicity data is as follows:
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
mouse | LD50 | intraperitoneal | 1531mg/kg (1531mg/kg) | Iyakuhin Kenkyu. Study of Medical Supplies. Vol. 16, Pg. 590, 1985. | |
mouse | LD50 | intravenous | 4gm/kg (4000mg/kg) | "CRC Handbook of Antibiotic Compounds," Vols.1- , Berdy, J., Boca Raton, FL, CRC Press, 1980Vol. 4(1), Pg. 129, 1980. | |
mouse | LD50 | oral | 4526mg/kg (4526mg/kg) | Iyakuhin Kenkyu. Study of Medical Supplies. Vol. 16, Pg. 590, 1985. | |
mouse | LD50 | subcutaneous | 2185mg/kg (2185mg/kg) | Iyakuhin Kenkyu. Study of Medical Supplies. Vol. 16, Pg. 590, 1985. | |
rat | LD50 | intraperitoneal | 1399mg/kg (1399mg/kg) | Iyakuhin Kenkyu. Study of Medical Supplies. Vol. 16, Pg. 590, 1985. | |
rat | LD50 | oral | 7936mg/kg (7936mg/kg) | Iyakuhin Kenkyu. Study of Medical Supplies. Vol. 16, Pg. 590, 1985. | |
rat | LD50 | subcutaneous | 1393mg/kg (1393mg/kg) | Iyakuhin Kenkyu. Study of Medical Supplies. Vol. 16, Pg. 590, 1985. |
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