Month: November 2022

《Ultrasensitive small molecule fluorogenic probe for human heparanase》 was written by Liu, Jun; Schleyer, Kelton A.; Bryan, Tyrel L.; Xie, Changjian; Seabra, Gustavo; Xu, Yongmei; Kafle, Arjun; Cui, Chao; Wang, Ying; Yin, Kunlun; Fetrow, Benjamin; Henderson, Paul K. P.; Fatland, Peter Z.; Liu, Jian; Li, Chenglong; Guo, Hua; Cui, Lina. Name: (2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetateThis research focused onultrasensitive fluorogenic probe human heparanase. The article conveys some information:

Heparanase (HPA) is a critical enzyme involved in the remodeling of the extracellular matrix (ECM), and its elevated expression has been linked with diseases such as various types of cancer and inflammation. The detection of heparanase enzymic activity holds tremendous value in the study of the cellular microenvironment, and search of mol. therapeutics targeting heparanase, however, no structurally defined probes are available for the detection of heparanase activity. Here we present the development of the first ultrasensitive fluorogenic small-mol. probe for heparanase enzymic activity via tuning the electronic effect of the substrate. The probe exhibits a 756-fold fluorescence turn-on response in the presence of human heparanase, allowing one-step detection of heparanase activity in real-time with a picomolar detection limit. The high sensitivity and robustness of the probe are exemplified in a high-throughput screening assay for heparanase inhibitors. In the experiment, the researchers used (2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3Name: (2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate)

(2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3) may be used for the synthesis of HMR1098-S-Glucuronide Methyl Ester, a new K-ATP-blocking agent being developed as a drug for prevention of sudden cardiac death.Name: (2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Cheng, Ge; Zhao, Ling; Wang, Yuechuan published an article in Gaofenzi Xuebao. The title of the article was 《Synthesis and characterization of polyphenylene dendrimers containing terminal trimethylsilyl groups》.Electric Literature of C24H12Br6 The author mentioned the following in the article:

Polyphenylene dendrimers containing terminal trimethylsilyl groups have been synthesized by a phosphine-free palladium chloride-catalyzed Suzuki coupling of 1,3,5-tris(3′,5′-dibromophenyl)benzene with aryl boronic acids. These macromols. were characterized by Fourier transform IR (FTIR), NMR and matrix assisted laser desorption/ionization time of flight (MALDI-TOF) mass spectra. Gel permeation chromatog. (GPC) indicated that the hydrodynamic radius of I, with trimethylsilyl (TMS) groups substituted at para-positions on its terminal benzene rings, was larger than that of its Me derivative, with trimethylsilyl groups substituted at meta-positions on its terminal benzene rings. X-ray powder diffraction patterns showed that dendrimer I was of a certain amount of crystallinity and the Me derivative dendrimer was amorphous.3,3”,5,5”-Tetrabromo-5′-(3,5-dibromophenyl)-1,1′:3′,1”-terphenyl(cas: 29102-67-8Electric Literature of C24H12Br6) was used in this study.

3,3”,5,5”-Tetrabromo-5′-(3,5-dibromophenyl)-1,1′:3′,1”-terphenyl(cas: 29102-67-8) 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. Electric Literature of C24H12Br6 Moreover, several studies demonstrate that the average proportion of bromine in drugs is significantly higher than that in natural products.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2016,Kundu, Subrata; Nagapradeep, N.; Mohapatra, Balaram; Biswas, Sourav; Verma, Sandeep; Chandrasekhar, Vadapalli published 《Organostannoxane-supported nucleobase arrays: synthesis and supramolecular structures of polymeric and molecular organotin complexes containing guanine, uracil and 2-aminopurine》.CrystEngComm published the findings.Name: Methyl 3-bromopropanoate The information in the text is summarized as follows:

The reaction of L1H {L1H = 3-(N9-guaninyl)propionic acid} with Me3SnCl or (n-Bu3Sn)2O afforded the 1D coordination polymers, [Me3Sn(L1)]n (1) and [n-Bu3Sn(L1)]n (2) resp. A reaction between L2H {L2H = 3-(N7-guaninyl)propionic acid} with Me3SnCl also afforded a 1D coordination polymer, [Me3Sn(L2)]n (3). A similar reaction between L3H [uracil-6-carboxylic acid] with (Ph3Sn)2O in a 2 : 1 ratio afforded a dimer [(n-Bu3SnL3)2·H2O] (4). A mononuclear compound [Me3Sn(L4)·H2O] (5) was obtained in a 1 : 1 reaction of 3-{N9-(2-aminopurinyl)}propanoic acid (L4H) with Me3SnCl. Complexes 1-5 show rich supramol. structures in the solid state as a result of several intermol. interactions. Thus, in the one-dimensional coordination polymer 3, triple hydrogen bonding (GG), between inter-chain guanine units has been observed Similarly a homo orotate quartet has been observed in 4 as a result of intermol. interactions. In the experiment, the researchers used Methyl 3-bromopropanoate(cas: 3395-91-3Name: Methyl 3-bromopropanoate)

Methyl 3-bromopropanoate(cas: 3395-91-3) belongs to bromides. 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.Name: Methyl 3-bromopropanoate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2018,Chen, Zhao; Liu, Gang; Pu, Shouzhi; Liu, Sheng Hua published 《Triphenylamine, carbazole or tetraphenylethylene-based gold(I) complexes: Tunable solid-state room-temperature phosphorescence and various mechanochromic luminescence characteristics》.Dyes and Pigments published the findings.Application In Synthesis of 3,5-Dibromoaniline The information in the text is summarized as follows:

Three novel gold(I) complexes based on triphenylamine, carbazole or tetraphenylethylene moiety were successfully designed and synthesized. Meanwhile, their structures were characterized by NMR spectroscopy and elemental anal. Their solid-state luminescence characteristics were surveyed by photoluminescence spectroscopy, and their distinct mech. stimulus-responsive behaviors in the solid state were also studied by photoluminescence spectroscopy. The solid-state phosphorescence and emission lifetimes of these mononuclear gold(I) complexes 1-3 could be tuned by introducing different fluorophores involving triphenylamine, carbazole or tetraphenylethylene. Also, luminogen 1 exhibited switchable mechanochromic luminescence behavior with color change from yellow to colorless, and the solid-state luminescence on-off mechanochromism between yellow-green and colorless of luminogen 2 could also be observed However, no mechanochromism phenomenon was observed for tetraphenylethene-containing luminogen 3. The powder x-ray diffraction results suggested that the unusual high-contrast mechanochromism characteristics of luminogens 1 and 2 could be attributed to a crystalline-to- amorphous morphol. transition. After reading the article, we found that the author used 3,5-Dibromoaniline(cas: 626-40-4Application In Synthesis of 3,5-Dibromoaniline)

3,5-Dibromoaniline(cas: 626-40-4) belongs to anime. Large quantities of aliphatic amines are made synthetically. The most widely used industrial method is the reaction of alcohols with ammonia at a high temperature, catalyzed by metals or metal oxide catalysts (e.g., nickel or copper). Mixtures of primary, secondary, and tertiary amines are thereby produced.Application In Synthesis of 3,5-Dibromoaniline

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2018,Yonekura, Kyohei; Shinoda, Mika; Yonekura, Yuko; Tsuchimoto, Teruhisa published 《Indium-catalyzed annulation of o-acylanilines with alkoxyheteroarenes: synthesis of heteroaryl[b]quinolines and subsequent transformation to cryptolepine derivatives》.Molecules published the findings.Category: bromides-buliding-blocks The information in the text is summarized as follows:

An efficient method for the synthesis of heteroaryl[b]quinolines such as I [R = H, 4-OH, 2,3-di-MeO, etc.; R1 = Me, i-Pr, Ph, etc.; X = N, S] was developed via annulation of o-acylanilines and MeO-heteroarenes using an indium Lewis acid as catalyst for tandem N-C and C-C bond formation. A series of indolo[3,2-b]quinolines was subsequently transformed to structurally unprecedented cryptolepine derivatives Mechanistic studies showed that the N-C bond formation was followed by the C-C bond formation. The indium-catalyzed annulation reaction thus started with the nucleophilic attack of the NH2 group of o-acylanilines to the MeO-connected carbon atom of the heteroaryl ring in an SNAr fashion and thereby the N-C bond was formed. The resulting intermediate then cyclized and gave C-C bond through the nucleophilic attack of the heteroaryl-ring-based carbon atom to the carbonyl carbon atom, provided the HA[b]Q after aromatizing dehydration. The experimental process involved the reaction of Indium(III) bromide(cas: 13465-09-3Category: bromides-buliding-blocks)

Indium(III) bromide(cas: 13465-09-3) is used as a catalyst to produce dithioacetals when unactivated alkynes react with thiols and fields such as optics and microelectronics that utilize semiconductor technology have wide uses for indium in high-performing solar cells.Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,ACS Catalysis included an article by Wang, Quannan; Chen, Rongjun; Lou, Jiang; Zhang, Dong H.; Zhou, Yong-Gui; Yu, Zhengkun. Quality Control of Methyltriphenylphosphonium bromide. The article was titled 《Highly Regioselective C-H Alkylation of Alkenes Through an Aryl to Vinyl 1,4-Palladium Migration/C-C Cleavage Cascade》. The information in the text is summarized as follows:

Palladium-catalyzed C-H alkylation of gem-disubstituted ethylenes has been efficiently achieved with cyclobutanols as the coupling partners through an aryl to vinyl 1,4-palladium migration/ring-opening C-C cleavage cascade, giving trisubstituted alkenes in high yields. The protocol features good regioselectivity, high yields, broad substrate scopes, and good functional group tolerance. The mechanistic studies implicate that the cross-coupling reaction occurs via oxidative addition, 1,4-palladium migration, ring-opening C-C cleavage, and reductive elimination. DFT calculations have revealed that the high efficiency of the protocol is attributed to the thermodynamically favored 1,4-palladium migration assisted by 2-fluorophenol. In the experimental materials used by the author, we found Methyltriphenylphosphonium bromide(cas: 1779-49-3Quality Control of Methyltriphenylphosphonium bromide)

Methyltriphenylphosphonium bromide(cas: 1779-49-3) is used for methylenation through the Wittig reaction. It is utilized in the synthesis of an enyne and 9-isopropenyl -phenanthrene by using sodium amide as reagent. Quality Control of Methyltriphenylphosphonium bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Nano Letters included an article by Zhang, Lingling; Huang, Liping; Wu, Shanshan; Xu, Xin; Bao, Junhui; Shen, Bowen; Zhang, Liwei; Hou, Yu; Jin, Longyi; Chen, Tie; Yang, Zujin; Lee, Myongsoo; Ji, Hongbing; Huang, Zhegang. Reference of 1,4-Bis(bromomethyl)benzene. The article was titled 《Two-Dimensional Cationic Networks and Their Spherical Curvature with Tunable Opening-Closing》. The information in the text is summarized as follows:

Despite many cationic nanomaterials that have been developed for efficient adsorption of anionic pollutants, tailoring a stable shape with denser cations on the surface for advanced removal capability remains challenging. Here, a new strategy is presented for fabricating two-dimensional (2D) cationic laminas and their curvature based on crosslinking of 2D supramol. networks from hydrogen-bonded trimesic amide derivatives Owing to the distribution of most cations on the surface, two cationic nanostructures from crosslinking of supramol. networks show fast sorption kinetics for anionic pollutants. Notably, the removal capacity of the capsule-like curvature adsorbent is more than twice that of lamina adsorbent for sufficient space around cationic sites in hollow aperture. Moreover, the capsule-like adsorbent is triggered to open and spontaneously release the adsorbed pollutants upon the addition of halogen anions, which can be recovered by subsequent dialysis. Strategy of a capsule-like pocket with tunable opening-closing will provide a new insight for storage and adsorption. In addition to this study using 1,4-Bis(bromomethyl)benzene, there are many other studies that have used 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Reference of 1,4-Bis(bromomethyl)benzene) was used in this study.

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals.Reference of 1,4-Bis(bromomethyl)benzene The most pervasive is the naturally produced bromomethane.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Green Chemistry included an article by Li, Zhuofei; Song, He; Guo, Rui; Zuo, Minghui; Hou, Chuanfu; Sun, Shouneng; He, Xin; Sun, Zhizhong; Chu, Wenyi. Formula: C7H5BrO. The article was titled 《Visible-light-induced condensation cyclization to synthesize benzimidazoles using fluorescein as a photocatalyst》. The information in the text is summarized as follows:

A mild strategy for visible-light-induced synthesis of benzimidazoles I (R = Ph, cyclohexyl, furan-2-yl, etc.; R1 = H, Me, Cl) was developed using aldehydes RCHO and o-phenylenediamines 2-NH2-4-R1C6H3NH2 as substrates. The use of an organic dye, fluorescein, as an innoxious photocatalyst provided a mild and inexpensive catalytic system to synthesize a series of benzimidazoles I in moderate to excellent yields. It was originally applied to this system to obtain benzimidazoles I. Besides, the catalytic system does not require an addnl. oxidant or metal which was good for the environment.o-Bromobenzaldehyde(cas: 6630-33-7Formula: C7H5BrO) was used in this study.

o-Bromobenzaldehyde(cas: 6630-33-7) is used in L-threonine aldolase-catalyzed enantio/diastereoselective aldol reactions.Formula: C7H5BrOIt is a key starting material in the total synthesis of an anticancer agent, (-)-taxol.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Chemical Science included an article by Ding, Feng; Chen, Zhao; Kim, Won Young; Sharma, Amit; Li, Chonglu; Ouyang, Qingying; Zhu, Hua; Yang, Guangfu; Sun, Yao; Kim, Jong Seung. Application In Synthesis of Methyl 3-bromopropanoate. The article was titled 《A nano-cocktail of an NIR-II emissive fluorophore and organoplatinum(II) metallacycle for efficient cancer imaging and therapy》. The information in the text is summarized as follows:

The scarcity of efficient imaging technologies for precise cancer treatment greatly drives the development of new nanotheranostic based platforms that enable both diagnostic and therapeutic functions, together in a single formulation. Owing to the complicated physiol. microenvironment, nanosystems designed with the possibility of noninvasive real-time monitoring of therapeutic progression in the second near-IR channel (NIR-II, 1000-1700 nm) could substantially improve the current cancer therapies. Herein, we design a novel NIR-II theranostic nanoprobe, PSY (size ∼110 nm), by incorporating organoplatinum(II) metallacycles P1 and an organic NIR-II mol. dye, SY1030, into the FDA-approved polymer Pluronic F127. Preliminary in vitro and in vivo studies suggest that PSY is capable of being internalized into glioma U87MG-cells with no significant internalization in non-cancerous tissues. In addition, it shows excellent photostability and minimal background for real-time monitoring the process of therapy in the NIR-II region. Furthermore, in U87MG xenografts and orthotopic breast tumor, PSY demonstrat significantly improved anticancer efficacy compared to a clin. approved Pt(II)-based anticancer drug, cisplatin. The engineered nano-cocktail PSY offers a simple strategy for delivering the organoplatinum(II) macrocycle P1 and NIR-II fluorophore SY1030 as a cocktail of diagnostic and therapeutic functions and highlights its promising capacity for future cancer treatment. In addition to this study using Methyl 3-bromopropanoate, there are many other studies that have used Methyl 3-bromopropanoate(cas: 3395-91-3Application In Synthesis of Methyl 3-bromopropanoate) was used in this study.

Methyl 3-bromopropanoate(cas: 3395-91-3) belongs to bromides. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. 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.Application In Synthesis of Methyl 3-bromopropanoate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Organic Letters included an article by Liu, Qianyi; Hong, Junting; Sun, Beiqi; Bai, Guangcan; Li, Feng; Liu, Guoquan; Yang, Yang; Mo, Fanyang. Name: (Bromomethyl)cyclopropane. The article was titled 《Transition-Metal-Free Borylation of Alkyl Iodides via a Radical Mechanism》. The information in the text is summarized as follows:

The authors describe an operationally simple transition-metal-free borylation of alkyl iodides. This method uses com. available diboron reagents as the B source and exhibits excellent functional group compatibility. Also, a diverse range of primary and secondary alkyl iodides could be effectively transformed to the corresponding alkylboronates in excellent yield. Mechanistic studies suggest that this borylation reaction proceeds through a single-electron transfer mechanism featuring the generation of an alkyl radical intermediate. The experimental process involved the reaction of (Bromomethyl)cyclopropane(cas: 7051-34-5Name: (Bromomethyl)cyclopropane)

(Bromomethyl)cyclopropane(cas: 7051-34-5) is used as a synthetic building block for the introduction of the cyclopropylmethyl group. It was also used in the synthesis of 1,4-dienes via iron-catalyzed cross-coupling with alkenyl Grignard reagents.Name: (Bromomethyl)cyclopropane

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary