Tag: M.W=100-200

Category: iodides-buliding-blocks. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: (2S)-(+)-3-Chloropropane-1,2-diol, is researched, Molecular C3H7ClO2, CAS is 60827-45-4, about The effect of the isomers of α-chlorohydrin and racemic β-chlorolactate on the rat kidney. Author is Porter, K. E.; Jones, A. R..

The (R)- [57090-45-6] and (S)-isomers [60827-45-4] of the male antifertility agent α-chlorohydrin have been synthesized. When administered to rats, the (R)-isomer induced a period of diuresis and glucosuria, whereas the (S)-isomer, which possesses the antifertility activity, had no detrimental action on the kidney. Neither of the isomers of α-chlorohydrin nor those of an active analog, 3-amino-1-chloropropan-2-ol, had any inhibitory activity on the oxidative metabolism of glucose  [50-99-7] or lactate  [50-21-5] in isolated kidney tubules. However, (RS)-β-chlorolactate  [1713-85-5], a metabolite common to both compounds, inhibited the oxidation of glucose, lactate, pyruvate  [127-17-3], and glutamate  [56-86-0] to CO2. It is proposed that the antifertility action of the (S)-isomers of α-chlorohydrin and 3-amino-1-chloropropan-2-ol is unrelated to the renal toxicity of the (R)-isomers, a toxic action involving the inhibition of oxidative metabolism by (S)-β-chlorolactate or a further product of this metabolite.

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So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Bumagin, N. A.; Kalinovskii, I. O.; Beletskaya, I. P. researched the compound: Mesitylcopper(I)( cas:75732-01-3 ).Related Products of 75732-01-3.They published the article 《The palladium-catalyzed cross-coupling reactions of mesitylcopper with aryl iodides》 about this compound( cas:75732-01-3 ) in Journal of Organometallic Chemistry. Keywords: cross coupling reaction mesitylcopper; aryl iodide coupling mesitylcopper; biphenyl. We’ll tell you more about this compound (cas:75732-01-3).

Mesitylcopper reacts with aryl iodides p-IC6H4R (R = MeO, Cl, Ac, CN, NO2), containing both electron-withdrawing and electron-donating groups, in the presence of 1 equiv Bu4NX (X = Br, I) and 1 mol % of PhPdI(PPh3)2 to give cross-coupling products p-R1C6H4R (same R; R1 = mesityl) in high yields.

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Jackson, H.; Rooney, F. R.; Fitzpatrick, R. W.; Gibson, K. H. published the article 《Characterization and antifertility activity in rats of S(+)-α-chlorohydrin》. Keywords: chlorohydrin stereoisomer antifertility activity.They researched the compound: (2S)-(+)-3-Chloropropane-1,2-diol( cas:60827-45-4 ).HPLC of Formula: 60827-45-4. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:60827-45-4) here.

In male rats, a single oral dose of S(+)α-chlorohydrin (I) [60827-45-4] (12.5 mg/kg) produced temporary infertility following pairing with females from matings between days 2 and 6 after the I dose. A similar dose of the racemic mixture [96-24-2] was ineffective and the antifertility effect of the active isomer was comparable to that produced by a mixture of similar amounts of the S(+)- and R(-) [57090-45-6]-isomer or the corresponding dose of the racemate (25 mg/kg). However, the latter dose of the S(+)-isomer induced sterility during week 1, some degree of recovery of fertility in weeks 2-3 followed by permanent sterility. The S(+) isomer also maintained the reversible antifertility effect on epididymal spermatozoa at a daily oral dose of 5-10 mg/kg. Preparation of derivatives of I may provide compounds with high antifertility potency and low toxicity.

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Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 2-Methylglutaronitrile, is researched, Molecular C6H8N2, CAS is 4553-62-2, about Cloning of a nitrilase gene from the cyanobacterium Synechocystis sp. strain PCC6803 and heterologous expression and characterization of the encoded protein.HPLC of Formula: 4553-62-2.

The gene encoding a putative nitrilase was identified in the genome sequence of the photosynthetic cyanobacterium Synechocystis sp. strain PCC6803. The gene was amplified by PCR and cloned into an expression vector. The encoded protein was heterologously expressed in the native form and as a His-tagged protein in Escherichia coli, and the recombinant strains were shown to convert benzonitrile to benzoate. The active enzyme was purified to homogeneity and shown by gel filtration to consist probably of 10 subunits. The purified nitrilase converted various aromatic and aliphatic nitriles. The highest enzyme activity was observed with fumarodinitrile, but also some rather hydrophobic aromatic (e.g., naphthalenecarbonitrile), heterocyclic (e.g., indole-3-acetonitrile), or long-chain aliphatic (di-)nitriles (e.g., octanoic acid dinitrile) were converted with higher specific activities than benzonitrile. From aliphatic dinitriles with less than six carbon atoms only 1 mol of ammonia was released per mol of dinitrile, and thus presumably the corresponding cyanocarboxylic acids formed. The purified enzyme was active in the presence of a wide range of organic solvents and the turnover rates of dodecanoic acid nitrile and naphthalenecarbonitrile were increased in the presence of water-soluble and water-immiscible organic solvents.

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Jones, A. R.; Du Toit, J. I. published an article about the compound: (2S)-(+)-3-Chloropropane-1,2-diol( cas:60827-45-4,SMILESS:OC[C@H](O)CCl ).Reference of (2S)-(+)-3-Chloropropane-1,2-diol. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:60827-45-4) through the article.

(S)-α-Chlorohydrin  [60827-45-4] interferes with glycolysis in bovine spermatozoa, whereas the (R)-isomer is ineffective. The action of the (S)-isomer, which involves inhibition of the reaction catalyzed by glyceraldehyde-3-phosphate dehydrogenase  [9001-50-7], is not immediate but is evident only after a brief period of incubation with the spermatozoa. This inhibitory action is prevented when glycerol  [56-81-5] is present, suggesting that the mechanism of action of (S)-α-chlorohydrin requires its oxidation to (S)-3-chlorolactaldehyde  [86747-03-7], which is the active metabolite. Addition of (R,S)-3-chlorolactaldehyde  [84709-24-0] to bovine spermatozoa caused immediate inhibition of glycolysis. The action of (S)-α-chlorohydrin in bovine spermatozoa may be similar to that observed in the spermatozoa of other species in being a 2-stage process: 1st, its oxidation to (S)-3-chlorolactaldehyde, and then inhibition of the glycolytic enzyme by this metabolite.

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Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 4553-62-2, is researched, SMILESS is N#CC(C)CCC#N, Molecular C6H8N2Journal, Article, Research Support, Non-U.S. Gov’t, Bioorganic & Medicinal Chemistry called Synthesis and biological evaluation of aroylguanidines related to amiloride as inhibitors of the human platelet Na+/H+ exchanger, Author is Laeckmann, Didier; Rogister, Francoise; Dejardin, Jean-Victor; Prosperi-Meys, Christelle; Geczy, Joseph; Delarge, Jacques; Masereel, Bernard, the main research direction is pyridine benzene isostere amiloride preparation sodium hydrogen exchanger inhibitor; structure amiloride isostere activity inhibitor sodium hydrogen exchanger.Reference of 2-Methylglutaronitrile.

Pyridine and benzene bioisosteres of amiloride such as I and II were synthesized and evaluated for their inhibitory potency against the sodium-hydrogen exchanger involved in intracellular pH regulation. Substituted diaminochloro-2-pyridinecarbonyl and diaminochloro-3-pyridinecarbonyl guanidines are prepared from 2-chloro-6-methyl-3,5-dinitropyridine and 2-methyl-1,5-pentanedinitrile, resp. Dichloro- and trichloropyridine-3-carbonyl guanidines, and simple pyridinecarbonyl and benzoyl guanidines are also prepared Several benzene derivatives and compounds bearing an carbonylguanidine moiety in the meta position of the pyridine nitrogen were much more potent than amiloride, but less so than the pyrazine inhibitor III (R = Et; R1 = Me2CH). II is the most active mol. in assays measuring the reduction in human platelet swelling due to sodium ion uptake and in assays of the inhibition of sodium ion uptake, with IC50 values of 0.8 μM in both assays. Replacement of the pyrazine ring of amiloride III (R = R1 = H) by a pyridine or a Ph ring improved the inhibitory potency for the sodium-hydrogen exchanger involved in intracellular pH regulation in the order Ph > pyridine > pyrazine.

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Mesitylcopper(I)(SMILESS: [Cu]C1=C(C)C=C(C)C=C1C,cas:75732-01-3) is researched.Recommanded Product: 2,5-Diphenyloxazole. The article 《Isolation of an unusual [Cu6] nanocluster through sequential addition of copper(I) to a polynucleating ligand》 in relation to this compound, is published in Dalton Transactions. Let’s take a look at the latest research on this compound (cas:75732-01-3).

Addition of 2 equiv of CuI to a [Cu2L]2 multimetallic complex results in cluster formation giving a rare bicapped tetrahedral [L2Cu6I2] cluster that is stabilized by two conformationally constrained polynucleating ligands, H2L = pyridine-bridged β-diketimine.

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COA of Formula: C9H11Cu. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: Mesitylcopper(I), is researched, Molecular C9H11Cu, CAS is 75732-01-3, about Carbonyl complexes of copper(I) aryloxides.

Reaction between mesitylcopper and the phenols 2,4,6-tris(t-butyl)phenol and 2,4,6-trimethylphenol under CO resulted in a dinuclear Cu(I) carbonyl species with bridging aryloxo ligands, viz [(Cu(OC6H2t-Bu3)(CO))2], which crystallizes as the THF solvate, [(Cu(OC6H2t-Bu3)(CO))2]·THF (1), and [(Cu(OC6H2Me3)(CO))2] (2), resp. Cu(I) is three-coordinated in both mols. and the Cu-O distances are 1.974(5) and 1.984(5) Å in 1 and 1.95(2) and 1.97(2) Å in 2. The carbonyl stretching frequencies are similar for 1 and 2, both in the solid state and in toluene solution: 2101 cm-1 for solid 1, 2106 cm-1 for solid 2, and 2104 and 2101 cm-1 for toluene solutions of 1 and 2, resp. If not stored under CO, the compounds decarbonylate readily; in 1 Cu-C is 1.781(8) Å and C-O 1.122(9) Å and in 2 the corresponding distances are 1.81(3) Å and 1.10(3) Å, resp. The Cu-C-O fragments are approx. linear in both compounds As for similar carbonyl complexes of Cu(I), the Cu-C bond is judged to be predominantly of σ character, with minimal metal → ligand π* contribution. Crystal data, 1: monoclinic, space group P21/n, a 9.172(4), b 23.304(6), c 9.725(4) Å, β 102.29°(4), Z = 2, R = 0.065 (Rw = 0.084); 2: cubic, space group Fd3̅, a 31.728(6) Å, Z = 48, R = 0.092 (Rw = 0.143).

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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 2-Methylglutaronitrile( cas:4553-62-2 ) is researched.Computed Properties of C6H8N2.Cooling, F. B.; Fager, S. K.; Fallon, R. D.; Folsom, P. W.; Gallagher, F. G.; Gavagan, J. E.; Hann, E. C.; Herkes, F. E.; Phillips, R. L.; Sigmund, A.; Wagner, L. W.; Wu, W.; DiCosimo, R. published the article 《Chemoenzymatic production of 1,5-dimethyl-2-piperidone》 about this compound( cas:4553-62-2 ) in Journal of Molecular Catalysis B: Enzymatic. Keywords: chemoenzymic dimethylpiperidone synthesis. Let’s learn more about this compound (cas:4553-62-2).

A chemoenzymic process for the preparation of 1,5-dimethyl-2-piperidone (1,5-DMPD) from 2-methylglutaronitrile (MGN) has been demonstrated. MGN was first hydrolyzed to 4-cyanopentanoic acid (4-CPA) ammonium salt using the nitrilase activity of immobilized Acidovorax facilis 72W cells. The hydrolysis reaction produced 4-CPA ammonium salt with greater than 98% regioselectivity at 100% conversion, and at concentrations of 170-210 g 4-CPA/l. Catalyst productivities of at least 1000 g 4-CPA/g dry cell weight (dcw) of immobilized cells were achieved by recycling the immobilized-cell catalyst in consecutive stirred-batch reactions. After recovery of the immobilized cell catalyst for reuse, the 4-CPA ammonium salt in the aqueous product mixture was directly converted to 1,5-DMPD by low-pressure catalytic hydrogenation in the presence of added methylamine.

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Kulig, Katarzyna; Boba, Agnieszka; Bielejewska, Anna; Gorska, Magdalena; Malawska, Barbara published an article about the compound: (2S)-(+)-3-Chloropropane-1,2-diol( cas:60827-45-4,SMILESS:OC[C@H](O)CCl ).COA of Formula: C3H7ClO2. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:60827-45-4) through the article.

The synthesis of enantiomers of 1-[3-(4-aryl-piperazin-1-yl)-2-hydroxy-propyl]-pyrrolidin-2-one derivatives, i.e. I, is described. These enantiomers were synthesized starting from (R)- or (S)-1-chloro-2,3-dihydroxypropane using relevant cyclic sulfates as chiral intermediates. The enantiomeric purities of the final compounds were in the range of 99.3-100.0%, as determined by high performance liquid chromatog. The final compounds were found to display moderate potency as ligands for α1-adrenoreceptors.

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