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The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
Mequinol is a depigmentation agent.
Synonyms: 4-Methoxyphenol; p-Hydroxyanisole
4.5
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Surveying the scope of aromatic decarboxylations catalyzed by prenylated-flavin dependent enzymes
Anushree Mondal ; Pronay Roy ; Jaclyn Carrannatto ; Prathamesh M. Datar ; Daniel J. DiRocco ; Katherine Huntera and E. Neil G. Marsh
Abstract: The prenylated-flavin mononucleotide-dependent decarboxylases (also known as UbiD-like enzymes) are the most recently discovered family of decarboxylases. The modified flavin facilitates the decarboxylation of unsaturated carboxylic acids through a novel mechanism involving 1,3-dipolar cyclo-addition chemistry. UbiD-like enzymes have attracted considerable interest for biocatalysis applications due to their ability to catalyse (de)carboxylation reactions on a broad range of aromatic substrates at otherwise unreactive carbon centres. There are now ∼35[thin space (1/6-em)]000 protein sequences annotated as hypothetical UbiD-like enzymes. Sequence similarity network analyses of the UbiD protein family suggests that there are likely dozens of distinct decarboxylase enzymes represented within this family. Furthermore, many of the enzymes so far characterized can decarboxylate a broad range of substrates. Here we describe a strategy to identify potential substrates of UbiD-like enzymes based on detecting enzyme-catalysed solvent deuterium exchange into potential substrates. Using ferulic acid decarboxylase (FDC) as a model system, we tested a diverse range of aromatic and heterocyclic molecules for their ability to undergo enzyme-catalysed H/D exchange in deuterated buffer. We found that FDC catalyses H/D exchange, albeit at generally very low levels, into a wide range of small, aromatic molecules that have little resemblance to its physiological substrate. In contrast, the sub-set of aromatic carboxylic acids that are substrates for FDC-catalysed decarboxylation is much smaller. We discuss the implications of these findings for screening uncharacterized UbiD-like enzymes for novel (de)carboxylase activity.
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Purchased from AmBeed: 27916-43-4 ; 2438-05-3 ; 501-89-3 ; 42287-94-5 ; 776-79-4 ; 53473-36-2 ; 7251-61-8 ; 42287-97-8 ; 1621-91-6 ; 37718-11-9 ; 288-13-1 ; 86-73-7 ; 104-53-0 ; 2018-90-8 ; 87-66-1 ; 135-19-3 ; 1664-57-9 ; 289-80-5 ; 693-95-8 ; 55-22-1 ; 102-93-2 ; 1477-50-5 ; 1632-76-4 ; 4780-79-4 ; 16642-79-8 ; 3581-89-3 ; 501-97-3 ; 771-50-6 ; 98-98-6 ; 619-64-7 ; 100-51-6 ; 402-45-9 ; 59-67-6 ; 93-60-7 ; 273-53-0 ; 2084-13-1 ; 51-17-2 ; 2459-09-8 ; 2459-07-6 ; 95-16-9 ; 459-31-4 ; 90-05-1 ; 150-76-5 ; 103-25-3 ; 271-44-3 ; 6293-56-7 ; 2550-26-7 ; 288-32-4 ; 501-52-0 ; 2001-32-3 ; 1592-38-7 ; 95-15-8 ; 91-19-0 ; 1122-61-8 ; 3724-19-4 ; 20173-24-4 ; 118-31-0 ; 6125-24-2 ; 60-12-8 ; 90-15-3 ; 120-72-9 ; 822-36-6 ; 288-47-1 ; 288-42-6 ; 2038-57-5 ; 38628-51-2 ; 1929-29-9 ; 15009-91-3 ; 1505-50-6 ; 581-40-8 ; 616-47-7 ; 1571-33-1
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Berg, Kaja ; Hegde, Pooja ; Pujari, Venugopal ; Brinkmann, Marzena ; Wilkins, David Z. ; Parish, Tanya , et al.
Abstract: The electron transport chain (ETC) in the cell membrane consists of a series of redox complexes that transfer electrons from electron donors to acceptors and couples this electron transfer with the transfer of protons (H+) across a membrane. This process generates proton motive force which is used to produce ATP and a myriad of other functions and is essential for the long-term survival of Mycobacterium tuberculosis (Mtb), the causative organism of tuberculosis (TB), under the hypoxic conditions present within infected granulomas. Menaquinone (MK), an important carrier molecule within the mycobacterial ETC, is synthesized de novo by a cluster of enzymes known as the classic/canonical MK biosynthetic pathway. MenA (1,4-dihydroxy-2-naphthoate prenyltransferase), the antepenultimate enzyme in this pathway, is a verified target for TB therapy. In this study, we explored structure-activity relationships of a previously discovered MenA inhibitor scaffold, seeking to improve potency and drug disposition properties. Focusing our campaign upon three molecular regions, we identified two novel inhibitors with potent activity against MenA and Mtb (IC50 = 13-22 μM, GIC50 = 8-10 μM). These analogs also displayed substantially improved pharmacokinetic parameters and potent synergy with other ETC-targeting agents, achieving nearly complete sterilization of Mtb in combination therapy within two weeks in vivo. These new inhibitors of MK biosynthesis present a promising new strategy to curb the continued spread of TB.
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Keywords: 1,4-dihydroxy-2-naphthoate prenyltransferase ; MenA ; MenA inhibitors ; Menaquinone ; Mtb ; Mycobacterium tuberculosis ; Piperidine derivatives ; SAR
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Purchased from AmBeed: 25952-53-8 ; 90719-32-7 ; 872-85-5 ; 6457-49-4 ; 3769-41-3 ; 10338-57-5 ; 135-19-3 ; 135-19-3 ; 28177-48-2 ; 22246-18-0 ; 122334-37-6 ; 91914-06-6 ; 10040-98-9 ; 161975-39-9 ; 150-76-5 ; 371-41-5 ; 63754-96-1 ; 288-32-4 ; 3380-34-5 ; 1677-46-9 ; 166815-96-9 ; 700-57-2 ; 1204-86-0 ; 21725-69-9 ; 367-12-4 ; 1003-29-8 ; 627-35-0 ; 27292-49-5 ; 104324-16-5 ; 123855-51-6 ; 180847-23-8 ; 4328-13-6 ; 875401-70-0 ; 405272-71-1 ; 63614-86-8 ; 1420942-13-7 ; 25952-53-8 ; 1420895-21-1 ; 1078-18-8 ; 32363-45-4 ; 69564-68-7 ; 31519-22-9 ; 22246-18-0 ; 189618-33-5 ; 180847-24-9 ; 6264-98-8 ; 946680-75-7 ; 63608-38-8 ; 713-68-8 ; 62810-39-3 ; 189618-32-4 ; 63608-31-1 ; 15789-05-6 ; 63712-27-6 ; 63608-33-3 ; 63608-35-5
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CAS No. : | 150-76-5 |
Formula : | C7H8O2 |
M.W : | 124.13 |
SMILES Code : | COC1=CC=C(O)C=C1 |
Synonyms : |
4-Methoxyphenol; p-Hydroxyanisole
|
MDL No. : | MFCD00002332 |
InChI Key : | NWVVVBRKAWDGAB-UHFFFAOYSA-N |
Pubchem ID : | 9015 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H317-H402 |
Precautionary Statements: | P501-P261-P273-P272-P270-P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P333+P313-P301+P312+P330 |
* 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 |
---|---|---|
48% | With trifluoroacetic acid In chlorobenzene at 100℃; Inert atmosphere | General procedure: A mixture of Phenol derivatives (1) (1.0 mmol), trifluoromethanesulfonic acid (1.0 mmol) and propiolic acid (2a) (0.5 mmol) in PhCl (3.0 mL) was stirred at 100 °C for 1 h. After completion of reaction as indicated by TLC, the reaction mixture was poured into H2O, neutralized with NaHCO3 solution and extracted CH2Cl2. The organic layer was washed with 2M NaOH, dried over anhydrous MgSO4. The solvent was removed in vaccum, and the products were purified by silica gel columnchromatography (EtOAc-Hex) to give the desired product 3. |
48% | With trifluorormethanesulfonic acid In chlorobenzene at 100℃; for 3 h; | The title compound was synthesized in the same manner as in Example 1, except that 4-methoxyphenol was used instead of phenol, 3-phenylpropiolic acid was used instead of propiolic acid, and the reaction time was 3 hours |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
79% | With sodium hydroxide; | EXAMPLE 1 Preparation of R-2-(4-methoxyphenoxy)propionic acid To 148.8 grams (g) (1.2 mole) of 4-methoxyphenol in a 500 ml flask equipped with a mechanical stirrer, condenser, addition funnel and heating mantle was added 256 g (1.6 mole) of 25 percent NaOH. The solution was then heated to 65 C. and 36.6 g (0.3 mole)of S-methyl 2-chloropropionate (approximately 86 percent optical purity) was added to the reaction mixture. The mixture was heated to 85 C. and stirred for 30 minutes. After cooling to room temperature, the pH of the solution was adjusted to between 5.0-6.0 with concentrated HCl. Methyl iso-butyl ketone was used to extract the unreacted 4-methoxyphenol which was subsequently recovered by evaporation of the solvent. The pH of the aqueous phase was further adjusted to about 1.0 with concentrated HCl. Methyl iso-butyl ketone was again used to extract the product. After removing the solvent, 46.6 g (79 percent yield) of R-2(4-methoxyphenoxy)propionic acid was obtained. The material had a melting range of 54-59 C. after drying. The nuclear magnetic resonance spectrum was consistent with the structure. The enantiomer ratio of R to S was found to be 88 to 12 (76 percent optical purity) by capillary gas chromatography on a DB-1 column after derivatization with S(+)-2-aminopropanol. |
14.28 kg | With water; potassium iodide; sodium hydroxide; at 60 - 90℃; for 12.0h;Large scale; | (1) Take the following materials: p-methoxyphenol 10kg,sodium hydroxide 10kg, potassium iodide 0.12kg, water 100kg, was added to thereaction vessel. Followed by stirring at room temperature for 30 minutes. Aftermixing the reaction vessel was heated. After mixing, raw material is heated tothe above mixture to 60 deg. C, and its temperature ismaintained at 60 deg. C ~ 70 deg.C. To which dropwise add 11.85kg methyl 2-chloropropionate. Under the use of potassium iodide catalyst, p-methoxyphenol react with methyl 2-chloropropionate. The reaction temperature is maintained at 60 ~ 90 . At the same time sodium hydroxide continue to react with the acid produced. The reaction has been positive in the direction of reaction. After 12h, the reaction is complete; (2) the product cooling to normal temperature, to the reaction after dropping mass fraction in the mixed solution of 30% sulfuric acid solution, the mixed liquid pH instillment to 2.0 time, stop dripping, subsequently the mixture temperature is reduced to 45 C the following, to mixed solution centrifugal, that is, to obtain white solid 2 - (4-methoxyphenoxy) propionic acid 14.28 kg; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Quartz treated with gamma-methacryloxypropyl trimethoxysilane (50 mum or less): 67.0 parts by weight N,N-Dimethyl-p-toluidine: 2.0 parts by weight Hydroquinone monomethyl ether: 0.01 part by weight |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
53% | With di-isopropyl azodicarboxylate; triphenylphosphine; In toluene; at 80℃; for 3h; | General procedure: To a stirred solution of 6 (0.100 g, 0.433 mmol), appropriate substituted phenol (0.649 mmol) and PPh3 (0.182 g,0.693 mmol) in anhydrous toluene (5 mL) was added DIAD(0.14 mL, 0.693 mmol) at 80 C. After 3 h, EtOAc (40 mL)was added to the resulting solution. The organic layer was washed with 0.5 M aqueous NaOH (40 mL) and water (2 X40 mL), dried over Na2SO4, filtered and concentrated. The residue was purified by flash silica gel column chromatography eluting with Hexanes/EtOAc (9:1) or (95:5) to afford compounds 7a-s. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
61% | General procedure: To a mixture of compound 3(1.5 mmol) and 3M HCl (1.53 mL) at 0 °C, a solution of sodium nitrite (NaNO2, 1.58mmol) in water (3 mL) was added dropwise while maintaining the temperaturebelow 5 °C. After stirring for 30 min, asolution of diazonium chloride was prepared. Subsequently, a solution ofdiazonium chloride was added gradually to a mixture of phenols/anilines (4a,b; 6a?f;8a?k or 9a?e, 1.5 mmol), and ethanol (3 mL) at 0-5 °C. The reaction mixture was adjusted to pH 8-9 with 1 Maq. NaOH. After addition, the mixture was continued to stir for 3-6 h. Thesolid was collected, washed with water (3×15 mL), dried and purified by PTLC orsilica gel column chromatography to give the target products IIa?x. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With molybdenum(VI) oxide; In ethanol; at 280℃; for 4h;Inert atmosphere; | General procedure: 2.0 g of guaiac acid (purchased in Tianjin Guangfu Technology Co., Ltd.), 0.5 g of MOS catalyst and 100 ml of ethanol were placed in a 300 ml reaction vessel, and the air in the reaction vessel was replaced with nitrogen. The temperature was raised to 280 C, and the reaction was stirred for 4 h. After the reaction was completed, the mixture was filtered under suction and rotary evaporated. The liquid product was subjected to qualitative analysis on a gas chromatography-mass spectrometer (GC6890-MS5973, Agilent), and the internal standard was added. Quantitative analysis by gas chromatography. The chromatogram was performed on an HP-5ms, 30m X 0.25mm X 0.25mum capillary column. The conversion of the raw guaiacol is calculated by (initial guaiacol moles - residual guaiacol moles) / (initial guaiacol moles) X100%, and the selectivity of the product hydrocarbyl phenol is (hydrocarbyl phenol) The number of moles / (molar guaiacol moles) X 100 % was calculated. Among the guaiacol conversion products, ethyl phenols include o-ethyl phenol, 2,5-diethyl phenol, 3,5-diethyl phenol, and propyl phenols include 2,6-diisopropyl phenol. , 2,4-diisopropylphenol, 2,4,6-triisopropylphenol, butyl phenols including 2,5-di-sec-butylphenol, 2,6-di-tert-butylphenol, 2, 4-di-tert-butylphenol, 2,6-di-tert-butyl-p-ethylphenol, pentanols include 2,4-di-tert-amylphenol, others include o-ethoxyphenol, o-ethoxybenzene Methyl ether, p-ethyl guaiacol, 2,6-diisopropylanisole). |
Tags: 150-76-5 synthesis path| 150-76-5 SDS| 150-76-5 COA| 150-76-5 purity| 150-76-5 application| 150-76-5 NMR| 150-76-5 COA| 150-76-5 structure
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H350 | May cause cancer |
H351 | Suspected of causing cancer |
H360 | May damage fertility or the unborn child |
H361 | Suspected of damaging fertility or the unborn child |
H361d | Suspected of damaging the unborn child |
H362 | May cause harm to breast-fed children |
H370 | Causes damage to organs |
H371 | May cause damage to organs |
H372 | Causes damage to organs through prolonged or repeated exposure |
H373 | May cause damage to organs through prolonged or repeated exposure |
Environmental hazards | |
Code | Phrase |
H400 | Very toxic to aquatic life |
H401 | Toxic to aquatic life |
H402 | Harmful to aquatic life |
H410 | Very toxic to aquatic life with long-lasting effects |
H411 | Toxic to aquatic life with long-lasting effects |
H412 | Harmful to aquatic life with long-lasting effects |
H413 | May cause long-lasting harmful effects to aquatic life |
H420 | Harms public health and the environment by destroying ozone in the upper atmosphere |
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