Month: January 2023

Molecular photoswitches based on spiro-acridans was written by Raskosova, Alina;Stoesser, Reinhard;Abraham, Werner. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2013.Application In Synthesis of Ethyl (2-bromophenyl)acetate This article mentions the following:

Thermally reversible photochromic spiro-acridans have been synthesized for the first time. They exhibit high ring opening efficiencies. As the formed zwitterions do not possess a merocyanine structure their lifetime is in the range of milliseconds to seconds. An observed side reaction can be avoided by suitable substitution of hydrogen atoms. In the experiment, the researchers used many compounds, for example, Ethyl (2-bromophenyl)acetate (cas: 2178-24-7Application In Synthesis of Ethyl (2-bromophenyl)acetate).

Ethyl (2-bromophenyl)acetate (cas: 2178-24-7) belongs to organobromine compounds. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents. The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.Application In Synthesis of Ethyl (2-bromophenyl)acetate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Discovery of 2-arylamino-4-(1-methyl-3-isopropylsulfonyl-4-pyrazol-amino)pyrimidines as potent anaplastic lymphoma kinase (ALK) inhibitors was written by Zhang, Peilong;Dong, Jiaqiang;Zhong, Boyu;Zhang, Deyi;Jin, Can;Meng, Xuejing;Sun, Desheng;Xu, Xiangyuan;Zhou, Yong;Liang, Zhi;Ji, Minghua;Li, Hailong;Xu, Tao;Song, Guowei;Zhang, Ling;Chen, Gang;Yuan, Hongbin;Shih, Joe;Zhang, Ruihao;Hou, Guojun;Jin, Ying;Yang, Qiong. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2015.Related Products of 95668-20-5 This article mentions the following:

A new series of 2,4-diamino pyrimidine derivatives with a sulfone-substituted pyrazole right side-chain were discovered as potent anaplastic lymphoma kinase inhibitors. Structure-activity relationship of the left side-chain on Ph substitutions were explored which delivered many potent ALK inhibitors. Among them, I showed favorable pharmacokinetic profiles in rats and dogs together with significant antitumor efficacy in EML4-ALK fusion xenograft model. In the experiment, the researchers used many compounds, for example, 3-Nitro-4-(trifluoromethoxy)bromobenzene (cas: 95668-20-5Related Products of 95668-20-5).

3-Nitro-4-(trifluoromethoxy)bromobenzene (cas: 95668-20-5) belongs to organobromine compounds. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. Bromine-containing agents predominate because not only are they more efficient than similar chlorine-containing species, but also the high atomic weight of bromine ensures that it is present in a high mass fraction within most organobromine compounds.Related Products of 95668-20-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Discovery of a novel chemotype of potent human ENaC blockers using a bioisostere approach. Part 1: Quaternary amines was written by Hunt, Thomas;Atherton-Watson, Hazel C.;Axford, Jake;Collingwood, Stephen P.;Coote, Kevin J.;Cox, Brian;Czarnecki, Sarah;Danahay, Henry;Devereux, Nick;Howsham, Catherine;Hunt, Peter;Paddock, Victoria;Paisley, Derek;Young, Alice. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2012.SDS of cas: 954-81-4 This article mentions the following:

We report the identification of a novel series of human epithelial sodium channel (ENaC) blockers that are structurally distinct from the pyrazinoyl guanidine chemotype found in prototypical ENaC blockers such as amiloride. Following a rational design hypothesis a series of quaternary amines were prepared and evaluated for their ability to block ion transport via ENaC in human bronchial epithelial cells (HBECs). Compound 11 has an IC₅₀ of 200 nM and is efficacious in the Guinea-pig tracheal p.d. (TPD) model of ENaC blockade with an ED₅₀ of 44 μg kg^-1 at 1 h. As such, pyrazinoyl quaternary amines represent the first examples of a promising new class of human ENaC blockers. In the experiment, the researchers used many compounds, for example, N-(5-Bromopentyl)phthalimide (cas: 954-81-4SDS of cas: 954-81-4).

N-(5-Bromopentyl)phthalimide (cas: 954-81-4) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact. When the molecular ion is detected, the bromine and chlorine isotope patterns are very distinct, but caution is to be exercised for certain mixed chlorinated/brominated compounds, which can look similar to homohalogen patterns.SDS of cas: 954-81-4

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Substituted phenylene- and biphenylenemercurials was written by Al-Jabar, N. A. A.;Massey, A. G.. And the article was included in Journal of Organometallic Chemistry in 1984.Safety of 3-Bromo-4-fluorotoluene This article mentions the following:

Treating 1,2-Br₂C₆H₄, its Me derivative, or 1,2-Br₂C₆H₂(OMe)₂-4,5 with Na amalgam gave trimeric phenylenemercury derivatives Also, heating 1,2-diiodotetrachlorobenzene with Hg gave trimeric tetrachlorophenylenemercury. Biphenylenemercury (HgC₁₂H₈)_n, prepared by 2 routes, was also trimeric. In the case of perfluorobiphenylenemercury, trace quantities of the tetramer exist in bulk samples of the trimer. In the experiment, the researchers used many compounds, for example, 3-Bromo-4-fluorotoluene (cas: 452-62-0Safety of 3-Bromo-4-fluorotoluene).

3-Bromo-4-fluorotoluene (cas: 452-62-0) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact. One prominent application of synthetic organobromine compounds is the use of polybrominated diphenyl ethers as fire-retardants, and in fact fire-retardant manufacture is currently the major industrial use of the element bromine.Safety of 3-Bromo-4-fluorotoluene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Structure-Activity Relationship Studies of Indole-Based Compounds as Small Molecule HIV-1 Fusion Inhibitors Targeting Glycoprotein 41 was written by Zhou, Guangyan;Sofiyev, Vladimir;Kaur, Hardeep;Snyder, Beth A.;Mankowski, Marie K.;Hogan, Priscilla A.;Ptak, Roger G.;Gochin, Miriam. And the article was included in Journal of Medicinal Chemistry in 2014.Related Products of 6515-58-8 This article mentions the following:

We previously described indole-containing compounds with the potential to inhibit HIV-1 fusion by targeting the hydrophobic pocket of transmembrane glycoprotein gp41. Here we report optimization and structure-activity relationship studies on the basic scaffold, defining the role of shape, contact surface area, and mol. properties. Thirty new compounds were evaluated in binding, cell-cell fusion, and viral replication assays. Below a 1 μM threshold, correlation between binding and biol. activity was diminished, indicating an amphipathic requirement for activity in cells. The most active inhibitor 6j exhibited 0.6 μM binding affinity and 0.2 μM EC₅₀ against cell-cell fusion and live virus replication and was active against T20 resistant strains. Twenty-two compounds with the same connectivity displayed a consensus pose in docking calculations, with rank order matching the biol. activity. The work provides insight into requirements for small mol. inhibition of HIV-1 fusion and demonstrates a potent low mol. weight fusion inhibitor. In the experiment, the researchers used many compounds, for example, 3-(Bromomethyl)benzoic acid (cas: 6515-58-8Related Products of 6515-58-8).

3-(Bromomethyl)benzoic acid (cas: 6515-58-8) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.Related Products of 6515-58-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

New enantiomeric fluorine-containing derivatives of sulforaphane: Synthesis, absolute configurations and biological activity was written by Kielbasinski, Piotr;Luczak, Jerzy;Cierpial, Tomasz;Blaszczyk, Jaroslaw;Sieron, Leslaw;Wiktorska, Katarzyna;Lubelska, Katarzyna;Milczarek, Malgorzata;Chilmonczyk, Zdzislaw. And the article was included in European Journal of Medicinal Chemistry in 2014.Name: N-(5-Bromopentyl)phthalimide This article mentions the following:

Three pairs of enantiomers of the unknown sulforaphane analogs, e.g. CF₃S(O)(CH₂)₄NCS, bearing organofluorine substituents bonded to the sulfinyl sulfur atom and having different number of methylene groups in the central carbon chain were synthesized and fully characterized, including determination of their absolute configurations. All the new compounds were tested in vitro for their cytotoxicity against melanoma cells to show increased activity in comparison with the natural sulforaphane. The influence of the particular structural changes in the mol. on the cytotoxicity is discussed. In the experiment, the researchers used many compounds, for example, N-(5-Bromopentyl)phthalimide (cas: 954-81-4Name: N-(5-Bromopentyl)phthalimide).

N-(5-Bromopentyl)phthalimide (cas: 954-81-4) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact. Many of the alkyl bromine derivatives are excellent alkylating agents since bromides are good leaving groups. Tribromides, like tetrabutylammonium tribromide, are used as a solid source of bromine. N-bromosuccimide (NBS) is used for the selective bromination of allylic bonds.Name: N-(5-Bromopentyl)phthalimide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Total Synthesis of Dictyodendrins A-E was written by Tokuyama, Hidetoshi;Okano, Kentaro;Fujiwara, Hideto;Noji, Toshiharu;Fukuyama, Tohru. And the article was included in Chemistry – An Asian Journal in 2011.Electric Literature of C9H11BrO This article mentions the following:

A highly efficient total synthesis of dictyodendrins A-E was accomplished. The synthesis features a novel benzyne-mediated one-pot indoline formation/cross-coupling sequence for the construction of a highly substituted key indoline intermediate. Peripheral substituents were introduced onto this intermediate in a modular fashion to complete the total synthesis of dictyodendrins A-E. In the experiment, the researchers used many compounds, for example, 1-(2-Bromoethyl)-4-methoxybenzene (cas: 14425-64-0Electric Literature of C9H11BrO).

1-(2-Bromoethyl)-4-methoxybenzene (cas: 14425-64-0) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. When the molecular ion is detected, the bromine and chlorine isotope patterns are very distinct, but caution is to be exercised for certain mixed chlorinated/brominated compounds, which can look similar to homohalogen patterns.Electric Literature of C9H11BrO

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

A facile approach for the total synthesis of neurotrophic diyne tetraol petrosiol A and petrosiol E was written by Gangadhar, Pamarthi;Sathish Reddy, A.;Srihari, Pabbaraja. And the article was included in Tetrahedron in 2016.Synthetic Route of C23H26BrP This article mentions the following:

The first total synthesis of neurotrophic diacetylenic tetraol, petrosiol A (I) and stereoselective total synthesis of petrosiol E (II) was accomplished. The total synthesis involves Cadiot-Chodkiewicz coupling reaction as the key step for petrosiol A. The diastereo-rich chiral alc. (third chiral center) was synthesized from CBS mediated stereoselective ketone reduction reaction for petrosiol E. Of the three chiral centers, the two chiral centers are originated from (+)-di-Et L-tartrate and the third chiral center was generated by an addition reaction of lithium trimethylsilylacetylide leading to two diastereomers which were used for the synthesis of both the natural products and their diastereomer C6-epi-petrosiol A and C6-epi-petrosiol E, resp. In the experiment, the researchers used many compounds, for example, Isopentyltriphenylphosphonium bromide (cas: 28322-40-9Synthetic Route of C23H26BrP).

Isopentyltriphenylphosphonium bromide (cas: 28322-40-9) belongs to organobromine compounds. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents. When the molecular ion is detected, the bromine and chlorine isotope patterns are very distinct, but caution is to be exercised for certain mixed chlorinated/brominated compounds, which can look similar to homohalogen patterns.Synthetic Route of C23H26BrP

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Prediction of Kinetic Isotope Effects for Various Hydride Transfer Reactions Using a New Kinetic Model was written by Shen, Guang-Bin;Xia, Ke;Li, Xiu-Tao;Li, Jun-Ling;Fu, Yan-Hua;Yuan, Lin;Zhu, Xiao-Qing. And the article was included in Journal of Physical Chemistry A in 2016.Application In Synthesis of 3,4-Dibromoaniline This article mentions the following:

In this work, kinetic isotope effect (KIE_self) values of 68 hydride self-exchange reactions, XH(D) + X⁺ â†?X⁺ + XH(D), in acetonitrile at 298 K were determined using a new exptl. method. KIE values of 4556 hydride cross transfer reactions, XH(D) + Y⁺ â†?X⁺ + YH(D), in acetonitrile were estimated from the 68 determined KIE_self values of hydride self-exchange reactions using a new KIE relation formula derived from Zhu’s kinetic equation and the reliability of the estimations was verified using different exptl. methods. A new KIE kinetic model to explain and predict KIE values was developed according to Zhu’s kinetic model using two different Morse free energy curves instead of one Morse free energy curve in the traditional KIE theories to describe the free energy changes of X-H bond and X-D bond dissociation in chem. reactions. The most significant contribution of this paper to KIE theory is to build a new KIE kinetic model, which can be used to not only uniformly explain the various (normal, enormous and inverse) KIE values but also safely predict KIE values of various chem. reactions. In the experiment, the researchers used many compounds, for example, 3,4-Dibromoaniline (cas: 615-55-4Application In Synthesis of 3,4-Dibromoaniline).

3,4-Dibromoaniline (cas: 615-55-4) belongs to organobromine compounds. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. Bromine-containing agents predominate because not only are they more efficient than similar chlorine-containing species, but also the high atomic weight of bromine ensures that it is present in a high mass fraction within most organobromine compounds.Application In Synthesis of 3,4-Dibromoaniline

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

X-ray structure and ligand binding study of a moth chemosensory protein was written by Lartigue, Audrey;Campanacci, Valerie;Roussel, Alain;Larsson, Anna M.;Jones, T. Alwyn;Tegoni, Mariella;Cambillau, Christian. And the article was included in Journal of Biological Chemistry in 2002.SDS of cas: 56523-59-2 This article mentions the following:

Chemosensory proteins (CSPs) are believed to be involved in chem. communication and perception. Such proteins, of M_r 13,000, have been isolated from several sensory organs of a wide range of insect species. Several CSPs have been identified in the antennae and proboscis of the moth Mamestra brassicae. One of them, CSPMbraA6, a 112-amino acid antennal protein, has been expressed in large quantities and is soluble in the Escherichia coli periplasm. X-ray structure determination has been performed in parallel with ligand binding assays using tryptophan fluorescence quenching. The protein has overall dimensions of 25 × 30 × 32 Å and exhibits a novel type of α-helical fold with six helixes connected by α-α loops. A narrow channel extends within the protein hydrophobic core. Fluorescence quenching with brominated alkyl alcs. or fatty acids and modeling studies indicates that CSPMbraA6 is able to bind such compounds with C12-18 alkyl chains. These ubiquitous proteins might have the role of extracting hydrophobic linear compounds (pheromones, odors, or fatty acids) dispersed in the phospholipid membrane and transporting them to their receptor. In the experiment, the researchers used many compounds, for example, 15-Bromopentadecanoic acid (cas: 56523-59-2SDS of cas: 56523-59-2).

15-Bromopentadecanoic acid (cas: 56523-59-2) belongs to organobromine compounds. Most of the natural organobromine compounds are produced by marine organisms, and several brominated metabolites with antibacterial, antitumor, antiviral, and antifungal activity have been isolated from seaweed, sponges, corals, molluscs, and others. The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.SDS of cas: 56523-59-2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary