02/02/2023 - Page 9 of 11 - Indole Building Blocks

Yuan, Yu-Chao et al. published their research in Organic Letters in 2017 | CAS: 5388-42-1

2-Phenylisoindolin-1-one (cas: 5388-42-1) belongs to indole derivatives. Indole, also called Benzopyrrole, a heterocyclic organic compound occurring in some flower oils, such as jasmine and orange blossom, in coal tar, and in fecal matter.Indole was synthesized in moderate yield via an o-naphthoquinone catalyzed tandem cross-coupling of substituted aniline and benzylamine under aerobic oxidation conditions.Name: 2-Phenylisoindolin-1-one

Unmasking Amides: Ruthenium-Catalyzed Protodecarbonylation of N-Substituted Phthalimide Derivatives was written by Yuan, Yu-Chao;Kamaraj, Raghu;Bruneau, Christian;Labasque, Thierry;Roisnel, Thierry;Gramage-Doria, Rafael. And the article was included in Organic Letters in 2017.Name: 2-Phenylisoindolin-1-one This article mentions the following:

The unprecedented transformation of a wide range of synthetically appealing phthalimides into amides in a single-step operation has been achieved in high yields and short reaction times using a ruthenium catalyst. Mechanistic studies revealed a unique, homogeneous pathway involving five-membered ring opening and CO₂ release with water being the source of protons. In the experiment, the researchers used many compounds, for example, 2-Phenylisoindolin-1-one (cas: 5388-42-1Name: 2-Phenylisoindolin-1-one).

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Katekar, Gerard F. et al. published their research in Phytochemistry (Elsevier) in 1982 | CAS: 1912-45-4

2-(5-Chloro-1H-indol-3-yl)acetic acid (cas: 1912-45-4) belongs to indole derivatives. Indole exists overwhelmingly in the 1H-indole form as do other simple indoles. Moreover, it is known that it controls biofilm formation. However, the role of indole in the cell has not been fully elucidated.Electric Literature of C10H8ClNO2

Auxins II: the effect of chlorinated indolylacetic acids on pea stems was written by Katekar, Gerard F.;Geissler, Art E.. And the article was included in Phytochemistry (Elsevier) in 1982.Electric Literature of C10H8ClNO2 This article mentions the following:

Assessment of a series of chlorinated IAA derivatives for auxin activity on pea stem sections gave results suggesting that the activities shown are reasonably consistent with a receptor site theory of structure-activity previously proposed by G. F. Katekar (1979). In the experiment, the researchers used many compounds, for example, 2-(5-Chloro-1H-indol-3-yl)acetic acid (cas: 1912-45-4Electric Literature of C10H8ClNO2).

Yu, Jipan et al. published their research in Synlett in 2015 | CAS: 14204-27-4

2-(Phenylthio)isoindoline-1,3-dione (cas: 14204-27-4) belongs to indole derivatives. Indole, also called Benzopyrrole, a heterocyclic organic compound occurring in some flower oils, such as jasmine and orange blossom, in coal tar, and in fecal matter.Indole was synthesized in moderate yield via an o-naphthoquinone catalyzed tandem cross-coupling of substituted aniline and benzylamine under aerobic oxidation conditions.COA of Formula: C14H9NO2S

Boron-Catalyzed Arylthiooxygenation of N-Allylamides: Synthesis of (Arylsulfanyl)oxazolines was written by Yu, Jipan;Tian, Hua;Gao, Chang;Yang, Haijun;Jiang, Yuyang;Fu, Hua. And the article was included in Synlett in 2015.COA of Formula: C14H9NO2S This article mentions the following:

Oxazoles and aryl sulfides are chem. entities that are found in many natural products and biol. and pharmaceutically active mols. It is therefore highly desirable to develop an efficient and practical approach to the synthesis of arylthio-substituted oxazolines. The authors developed a simple and efficient method for boron-catalyzed sequential arylsulfanylation and oxygenation of N-allylamides. The protocol uses readily available 1-(arylthio)pyrrolidine-2,5-diones as the arylsulfanylation reagents and inexpensive boron trifluoride etherate as the catalyst; no ligands or additives are required, and it is not necessary to purge the reaction vessel of air. The method therefore provides an efficient and practical strategy for the synthesis of arylthio-substituted heterocycles. In the experiment, the researchers used many compounds, for example, 2-(Phenylthio)isoindoline-1,3-dione (cas: 14204-27-4COA of Formula: C14H9NO2S).

Madhu, Bandi et al. published their research in Research on Chemical Intermediates in 2017 | CAS: 827-01-0

5-Chloroindole-3-carboxaldehyde (cas: 827-01-0) belongs to indole derivatives. Indole, also called Benzopyrrole, a heterocyclic organic compound occurring in some flower oils, such as jasmine and orange blossom, in coal tar, and in fecal matter. Moreover, it is known that it controls biofilm formation. However, the role of indole in the cell has not been fully elucidated.Quality Control of 5-Chloroindole-3-carboxaldehyde

Effect of heterocyclic ring system on formation of dimeric quinolones under catalyst-free conditions: a green approach was written by Madhu, Bandi;Raja sekar, B.;Venkata Ramana Reddy, C. H.;Dubey, P. K.. And the article was included in Research on Chemical Intermediates in 2017.Quality Control of 5-Chloroindole-3-carboxaldehyde This article mentions the following:

The intermediate-dependent green and efficient synthesis of dimeric quinolones I (R¹ = Me, Et; R² = H, Me, OMe, Cl, Br, NO₂) and II (R³ = Me, Et; R⁴ = Ph, 3-ClC₆H₄, 3,4-(OMe)₂, etc.) was described. Compounds I were prepared by either the Knoevenagel condensation of 4-hydroxy-quinolin-2(1H)-ones with indole-3-carboxaldehydes in water followed by Michael-type addition of the (3-indolylmethylene)quinoline diones under catalyst-free conditions with another equivalent of indole-3-carboxaldehyde or via a one-pot reaction using two equivalent of the aldehyde. Compounds II were prepared by the tandem one-pot Knoevenagel condensation followed by Michael-type addition of 4-hydroxy-quinolin-2(1H)-ones with aromatic aldehydes in water. This reaction was found to be environmentally friendly, has easy-workup and shorter reaction times giving good yields of the product without the need for its isolation using column chromatog. In the experiment, the researchers used many compounds, for example, 5-Chloroindole-3-carboxaldehyde (cas: 827-01-0Quality Control of 5-Chloroindole-3-carboxaldehyde).

Keetha, Laxminarayana et al. published their research in Journal of the Korean Chemical Society in 2011 | CAS: 90271-86-6

5-Bromo-3-cyanoindole (cas: 90271-86-6) belongs to indole derivatives. Indole produced by Proteus, Pseudomonas, Escherichia and other species was shown to be a growth promoting factor in Arabidopsis thaliana. Due to this activity, the indole ring system has become an important component or intermediate in the synthesis of heterocycles.Synthetic Route of C9H5BrN2

Highly convenient and large scale synthesis of 5-chloroindole and its 3-substituted analogues was written by Keetha, Laxminarayana;Palle, Sadanandam;Ramanatham, Vinodkumar;Khagga, Mukkanti;Chinnapillai, Rajendiran. And the article was included in Journal of the Korean Chemical Society in 2011.Synthetic Route of C9H5BrN2 This article mentions the following:

A large scale and com. feasible synthesis of 5-chloroindole and its 3-substituted analogs was described via a halogen-halogen exchange reaction from 5-bromoindole and its derivatives using cuprous chloride and dipolar aprotic solvent N-methyl-2-pyrrolidone in one-pot with good yields. In the experiment, the researchers used many compounds, for example, 5-Bromo-3-cyanoindole (cas: 90271-86-6Synthetic Route of C9H5BrN2).

Samanta, Biswajit et al. published their research in Angewandte Chemie, International Edition in 2016 | CAS: 146368-07-2

1-Ethyl-2,3,3-trimethyl-3H-indol-1-ium-5-sulfonate (cas: 146368-07-2) belongs to indole derivatives. The indole subunit is an almost ubiquitous component of biologically active natural products, and its study has been the focus of research for decades. In addition to indole, the strain-release chemistry worked for numerous substrates including amines, alcohols, thiols, carboxylic acids, imidazoles, and pyrazoles.Application In Synthesis of 1-Ethyl-2,3,3-trimethyl-3H-indol-1-ium-5-sulfonate

Fluorogenic Labeling of 5-Formylpyrimidine Nucleotides in DNA and RNA was written by Samanta, Biswajit;Seikowski, Jan;Hoebartner, Claudia. And the article was included in Angewandte Chemie, International Edition in 2016.Application In Synthesis of 1-Ethyl-2,3,3-trimethyl-3H-indol-1-ium-5-sulfonate This article mentions the following:

5-Formylcytosine (5fC) and 5-formyluracil (5fU) are natural nucleobase modifications that were generated by oxidative modification of 5-methylcytosine and thymine (or 5-methyluracil). Herein, the authors describe chemoselective labeling of 5-formylpyrimidine nucleotides in DNA and RNA by fluorogenic aldol-type condensation reactions with 2,3,3-trimethylindole derivatives Mild and specific reaction conditions were developed for 5fU and 5fC to produce hemicyanine-like chromophores with distinct photophys. properties. Residue-specific detection was established by fluorescence readout as well as primer-extension assays. The reactions were optimized on DNA oligonucleotides and were equally suitable for the modification of 5fU- and 5fC-modified RNA. This direct labeling approach of 5-formylpyrimidines is expected to help in elucidating the occurrence, enzymic transformations, and functional roles of these epigenetic/epitranscriptomic nucleobase modifications in DNA and RNA. In the experiment, the researchers used many compounds, for example, 1-Ethyl-2,3,3-trimethyl-3H-indol-1-ium-5-sulfonate (cas: 146368-07-2Application In Synthesis of 1-Ethyl-2,3,3-trimethyl-3H-indol-1-ium-5-sulfonate).

Thorsen, W. J. et al. published their research in Textile Research Journal in 1976 | CAS: 24407-32-7

4,5,6,7-Tetrabromoisoindoline-1,3-dione (cas: 24407-32-7) belongs to indole derivatives. Indole is an important structural motif of various drugs, therapeutic leads besides its prevalence in numerous natural products, agrochemicals, perfumery, and dyes. More than 200 indole derivatives have already been marketed as drugs or are under advanced stages of clinical trials.Reference of 24407-32-7

Flame-resisting wool with halo-organic compounds. Part I: Water-soluble or emulsifiable bromine derivatives incorporating one or more reactive centers was written by Thorsen, W. J.. And the article was included in Textile Research Journal in 1976.Reference of 24407-32-7 This article mentions the following:

The flame retardancy of aromatic compounds having Br incorporated with SO3H groups and other reactive sites increased as the acidic nature of the mol. increased. 2,4,6-Tribromometanilic acid [58585-89-0] and tetrabromophthalic acid [13810-83-8], although not washfast, were the most promising; the former was capable of fireproofing wool which had been made shrink-resistant by ozone. In the experiment, the researchers used many compounds, for example, 4,5,6,7-Tetrabromoisoindoline-1,3-dione (cas: 24407-32-7Reference of 24407-32-7).

Bozkurt, Yasemin Soydas et al. published their research in Phosphorus, Sulfur and Silicon and the Related Elements in 2011 | CAS: 14204-27-4

2-(Phenylthio)isoindoline-1,3-dione (cas: 14204-27-4) belongs to indole derivatives. The indole subunit is an almost ubiquitous component of biologically active natural products, and its study has been the focus of research for decades. In addition to indole, the strain-release chemistry worked for numerous substrates including amines, alcohols, thiols, carboxylic acids, imidazoles, and pyrazoles.HPLC of Formula: 14204-27-4

The Synthesis of Sulfinylphthalimides and their Reactions with Some Nucleophiles in Dioxane was written by Bozkurt, Yasemin Soydas;Kutuk, Halil. And the article was included in Phosphorus, Sulfur and Silicon and the Related Elements in 2011.HPLC of Formula: 14204-27-4 This article mentions the following:

In this study, some N-(p-substituted-arylsulfinyl)phthalimides (1a-1e) were synthesized. The synthesized compounds were examined with respect to their substitution reactions with sodium ethoxide, sodium methoxide, methylamine, and t-butylamine in dioxane. The substituent effect was investigated at 30.0 Â± 0.1 Â°C. The activation entropy was also studied, and neg. ÎS^{â?/sup> values were obtained. Configuration inversions were observed in the substitution reactions. This result is in conformity with the S_N2 mechanism. In the experiment, the researchers used many compounds, for example, 2-(Phenylthio)isoindoline-1,3-dione (cas: 14204-27-4HPLC of Formula: 14204-27-4).}

Kholodar, Svetlana A. et al. published their research in ACS Chemical Biology in 2021 | CAS: 4769-96-4

6-Nitro-1H-indole (cas: 4769-96-4) belongs to indole derivatives. In addition to tryptophan, indigo, and indoleacetic acid, numerous compounds obtainable from plant or animal sources contain the indole molecular structure. Indole plays a fundamental role for QS in E. coli, being one of the signal molecules responsible for the transcription of a variety of genes (gabT, and tnaB ASTD). Reference of 4769-96-4

Analogs of the Dopamine Metabolite 5,6-Dihydroxyindole Bind Directly to and Activate the Nuclear Receptor Nurr1 was written by Kholodar, Svetlana A.;Lang, Geoffrey;Cortopassi, Wilian A.;Iizuka, Yoshie;Brah, Harman S.;Jacobson, Matthew P.;England, Pamela M.. And the article was included in ACS Chemical Biology in 2021.Reference of 4769-96-4 This article mentions the following:

The nuclear receptor-related 1 protein, Nurr1, is a transcription factor critical for the development and maintenance of dopamine-producing neurons in the substantia nigra pars compacta, a cell population that progressively loses the ability to make dopamine and degenerates in Parkinson’s disease. Recently, we demonstrated that Nurr1 binds directly to and is regulated by the endogenous dopamine metabolite 5,6-dihydroxyindole (DHI). Unfortunately, DHI is an unstable compound, and thus a poor tool for studying Nurr1 function. Here, we report that 5-chloroindole, an unreactive analog of DHI, binds directly to the Nurr1 ligand binding domain with micromolar affinity and stimulates the activity of Nurr1, including the transcription of genes governing the synthesis and packaging of dopamine. In the experiment, the researchers used many compounds, for example, 6-Nitro-1H-indole (cas: 4769-96-4Reference of 4769-96-4).

Luo, Yang-Hui et al. published their research in CrystEngComm in 2013 | CAS: 827-01-0

5-Chloroindole-3-carboxaldehyde (cas: 827-01-0) belongs to indole derivatives. Indole, also called Benzopyrrole, a heterocyclic organic compound occurring in some flower oils, such as jasmine and orange blossom, in coal tar, and in fecal matter. Due to this activity, the indole ring system has become an important component or intermediate in the synthesis of heterocycles.Electric Literature of C9H6ClNO

An investigation into the substituent effect of halogen atoms on the crystal structures of indole-3-carboxylic acid (ICA) was written by Luo, Yang-Hui;Sun, Bai-Wang. And the article was included in CrystEngComm in 2013.Electric Literature of C9H6ClNO This article mentions the following:

A study into the substituent effect of halogen atoms (F, Cl, Br) on the crystal structure of indole-3-carboxylic acid (ICA) was prepared The study was done through the aspect of crystal structure, intermol. interactions and π···π stacking motifs with the assistance of IR spectra, elemental analyses, NMR spectra, DSC, thermogravimetric analyses (TGA) and hot stage microscopy (HSM) measurements. The different kinds of halogen atoms and the different substituted positions have a significant effect on the crystal structures, mol. π···π stacking motifs and the kinds of intermol. interactions. The authors further correlated the m.ps. of the ICAs with the H-H, O-H and X-H (X = F, Cl, Br) interactions, and found a pos. correlation between them. In the experiment, the researchers used many compounds, for example, 5-Chloroindole-3-carboxaldehyde (cas: 827-01-0Electric Literature of C9H6ClNO).

5-Chloroindole-3-carboxaldehyde (cas: 827-01-0) belongs to indole derivatives. Indole, also called Benzopyrrole, a heterocyclic organic compound occurring in some flower oils, such as jasmine and orange blossom, in coal tar, and in fecal matter. Due to this activity, the indole ring system has become an important component or intermediate in the synthesis of heterocycles.Electric Literature of C9H6ClNO