Category: indole-building-block

Di Nicolantonio, Federica published the artcileReplacement of normal with mutant alleles in the genome of normal human cells unveils mutation-specific drug responses, SDS of cas: 2854-32-2, the publication is Proceedings of the National Academy of Sciences of the United States of America (2008), 105(52), 20864-20869, database is CAplus and MEDLINE.

Mutations in oncogenes and tumor suppressor genes are responsible for tumorigenesis and represent favored therapeutic targets in oncol. The authors exploited homologous recombination to knock-in individual cancer mutations in the genome of nontransformed human cells. Sequential introduction of multiple mutations was also achieved, demonstrating the potential of this strategy to construct tumor progression models. Knock-in cells displayed allele-specific activation of signaling pathways and mutation-specific phenotypes different from those obtainable by ectopic oncogene expression. Profiling of a library of pharmacol. agents on the mutated cells showed striking sensitivity or resistance phenotypes to pathway-targeted drugs, often matching those of tumor cells carrying equivalent cancer mutations. Thus, knock-in of single or multiple cancer alleles provides a pharmacogenomic platform for the rational design of targeted therapies.

Proceedings of the National Academy of Sciences of the United States of America published new progress about 2854-32-2. 2854-32-2 belongs to indole-building-block, auxiliary class GPCR/G Protein,Cannabinoid Receptor, name is 2-(1-(4-Chlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl)-1-morpholinoethanone, and the molecular formula is C23H23ClN2O4, SDS of cas: 2854-32-2.

Referemce:
https://www.nature.com/articles/s41429-020-0333-2,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Mondal, Pravat published the artcileEnantioselective Total Synthesis of Desbromoarborescidines A-C and the Formal Synthesis of (S)-Deplancheine, Recommanded Product: tert-Butyl 3-(2-aminoethyl)-1H-indole-1-carboxylate, the publication is Journal of Organic Chemistry (2013), 78(13), 6802-6808, database is CAplus and MEDLINE.

Starting from Boc-protected tryptamine and (S)-tetrahydro-5-oxo-2-furancarboxylic acid, facile enantioselective total synthesis of desbromoarborescidines A-C and the formal synthesis of (S)-deplancheine have been accomplished via a common intermediate (S)-indolo[2,3-a]quinolizine (I). Synthesis of enantiomerically pure (S)-acetoxyglutarimide (II), stereoselective reductive intramol. cyclization, hydroxyl group-assisted in situ N-Boc-deprotection, selective deoxygenation of the xanthate ester, and lactam hydrolysis followed by an appropriate exchange of nitrogen regioselectivity in intramol. cyclization were the decisive steps.

Journal of Organic Chemistry published new progress about 167015-84-1. 167015-84-1 belongs to indole-building-block, auxiliary class Indols, name is tert-Butyl 3-(2-aminoethyl)-1H-indole-1-carboxylate, and the molecular formula is C15H20N2O2, Recommanded Product: tert-Butyl 3-(2-aminoethyl)-1H-indole-1-carboxylate.

Referemce:
https://www.nature.com/articles/s41429-020-0333-2,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Wu, Fan published the artcileOxyamination of Unactivated Alkenes with Electron-Rich Amines and Acids via a Catalytic Triiodide Intermediate, Name: tert-Butyl 3-(2-aminoethyl)-1H-indole-1-carboxylate, the publication is Organic Letters (2020), 22(3), 884-890, database is CAplus and MEDLINE.

An aerobic catalytic oxidation process is described for the olefin oxyamination using acids and primary amines as the sources of O and N. Our mechanistic findings point to the formation of triiodide as a critical catalytic intermediate to account for the tolerance of electron-rich nucleophiles. This dual iodide and copper catalytic system is suitable for a formal [5+1] annulation process to access valuable lactam structures and highlighted by the synthesis of the pharmaceutical Zamifenacin.

Organic Letters published new progress about 167015-84-1. 167015-84-1 belongs to indole-building-block, auxiliary class Indols, name is tert-Butyl 3-(2-aminoethyl)-1H-indole-1-carboxylate, and the molecular formula is C15H20N2O2, Name: tert-Butyl 3-(2-aminoethyl)-1H-indole-1-carboxylate.

Referemce:
https://www.nature.com/articles/s41429-020-0333-2,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Tani, Masanobu published the artcileNew strategy for indole synthesis from ethyl pyrrole-2-carboxylate (synthetic studies on indoles and related compounds. XXXIX), COA of Formula: C12H13NO3, the publication is Chemical & Pharmaceutical Bulletin (1996), 44(1), 55-61, database is CAplus.

As a synthetic application of the previously reported C₄-acylation of Et pyrrole-2-carboxylate, a new strategy for indole synthesis was developed. Et pyrrole-2-carboxylate was allowed to react with succinic anhydride or 3-methoxycarbonylpropionyl chloride to give, in good yield, a C₄-succinyl derivative, which was converted into Et 7-oxo-4,5,6,7-tetrahydroindole-2-carboxylate (I) as a key intermediate for indole synthesis. Starting from I, several indoles functionalized on the benzene moiety were synthesized.

Chemical & Pharmaceutical Bulletin published new progress about 20538-12-9. 20538-12-9 belongs to indole-building-block, auxiliary class Indole,Ester,Ether, name is Ethyl 7-methoxy-1H-indole-2-carboxylate, and the molecular formula is C9H10O4, COA of Formula: C12H13NO3.

Referemce:
https://www.nature.com/articles/s41429-020-0333-2,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Narayana, B. published the artcileSimple syntheses of 5-fluoro/ chloro/ bromoindole-2-methanols and 5-fluoro/ chloro/ bromoindole-2-aldehydes, Quality Control of 220943-23-7, the publication is Organic Chemistry: An Indian Journal (2006), 2(1-3), 5-9, database is CAplus.

Efficient and simple methods for the syntheses of 5-haloindole-2-methanols and 5-haloindole-2-aldehydes have been described. 5-Haloindole-2-methanols were prepared by reduction of Me 5-haloindole-2-carboxylates with sodium borohydride in methanol/ THF media and 5-haloindole-2-aldehydes were prepared from the prepared 5-haloindole-2-methanols by oxidation with pyridinium chlorochromate or chromium trioxide-pyridine prepared in situ. The synthesized compounds were isolated in good yields and characterized by ¹H NMR, ¹³C NMR, FABMS and elemental anal.

Organic Chemistry: An Indian Journal published new progress about 220943-23-7. 220943-23-7 belongs to indole-building-block, auxiliary class Indole,Fluoride,Aldehyde, name is 5-Fluoro-1H-indole-2-carbaldehyde, and the molecular formula is C9H6FNO, Quality Control of 220943-23-7.

Referemce:
https://www.nature.com/articles/s41429-020-0333-2,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Alcaraz, Marie-Lyne published the artcileEfficient Syntheses of AZD4407 via Thioether Formation by Nucleophilic Attack of Organometallic Species on Sulphur, Formula: C9H8ClNO3S, the publication is Organic Process Research & Development (2005), 9(5), 555-569, database is CAplus.

The development of two efficient strategies for the synthesis of AZD4407 (I) is reported, both of which are considered suitable for large-scale manufacture In the first approach, 3-bromothiophene is coupled with (2S)-2-methyltetrahydropyran-4-one using Grignard chem. Following hydroxyl protection and lithiation at thiophene C-2, reaction with a protected 5-mercapto-1-methyl-1,3-dihydro-indol-2-one derivative bearing a leaving group on sulfur provides AZD4407 after acid-catalyzed deprotection and epimerization. The second approach starts from 2,4-dibromothiophene, which undergoes a selective Grignard exchange reaction at C-2 followed by reaction with similar protected mercapto-oxindole derivatives Reprotection of the oxindole ring, followed by a second Grignard exchange, and reaction with (2S)-2-methyltetrahydropyran-4-one provides AZD4407 after acid-catalyzed deprotection and epimerization.

Organic Process Research & Development published new progress about 166883-20-1. 166883-20-1 belongs to indole-building-block, auxiliary class Indoline,Chloride,Sulfonyl chlorides,Amide, name is 1-Methyl-2-oxoindoline-5-sulfonyl chloride, and the molecular formula is C9H8ClNO3S, Formula: C9H8ClNO3S.

Referemce:
https://www.nature.com/articles/s41429-020-0333-2,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Roller, Devin G. published the artcileSynthetic Lethal Screening with Small-Molecule Inhibitors Provides a Pathway to Rational Combination Therapies for Melanoma, Computed Properties of 330161-87-0, the publication is Molecular Cancer Therapeutics (2012), 11(11), 2505-2515, database is CAplus and MEDLINE.

Recent data show that extracellular signals are transmitted through a network of proteins rather than hierarchical signaling pathways, suggesting that the inhibition of a single component of a canonical pathway is insufficient for the treatment of cancer. The biol. outcome of signaling through a network is inherently more robust and resistant to inhibition of a single network component. In this study, we conducted a functional chem. genetic screen to identify novel interactions between signaling inhibitors that would not be predicted on the basis of our current understanding of signaling networks. We screened over 300 drug combinations in nine melanoma cell lines and have identified pairs of compounds that show synergistic cytotoxicity. The synergistic cytotoxicities identified did not correlate with the known RAS and BRAF mutational status of the melanoma cell lines. Among the most robust results was synergy between sorafenib, a multikinase inhibitor with activity against RAF, and diclofenac, a nonsteroidal anti-inflammatory drug (NSAID). Drug substitution experiments using the NSAIDs celecoxib and ibuprofen or the MAP-ERK kinase inhibitor PD325901 and the RAF inhibitor RAF265 suggest that inhibition of COX and mitogen-activated protein kinase signaling are targets for the synergistic cytotoxicity of sorafenib and diclofenac. Cotreatment with sorafenib and diclofenac interrupts a pos. feedback signaling loop involving extracellular signal-regulated kinase, cellular phospholipase A2, and COX. Genome-wide expression profiling shows synergy-specific downregulation of survival-related genes. This study has uncovered novel functional drug combinations and suggests that the underlying signaling networks that control responses to targeted agents can vary substantially, depending on unexplored components of the cell genotype. Mol Cancer Ther; 11(11); 2505-15. ©2012 AACR.

Molecular Cancer Therapeutics published new progress about 330161-87-0. 330161-87-0 belongs to indole-building-block, auxiliary class Protein Tyrosine Kinase/RTK,Src, name is SU6656, and the molecular formula is C19H21N3O3S, Computed Properties of 330161-87-0.

Referemce:
https://www.nature.com/articles/s41429-020-0333-2,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Morounke, Saibu G. published the artcileGene expression modulation of apoptotic and oestrogen receptor alpha genes by active fractions of selected nigerian plants on cervical cancer cell line (HeLa), Synthetic Route of 192820-78-3, the publication is Tropical Journal of Natural Product Research (2021), 5(4), 772-777, database is CAplus.

The roles of natural product in drug discovery and development cannot be over emphasized. It plays a vital role in human therapy and gives a better understanding on the cellular pathways.This study investigated the modulatory effects of partially purified fractions of Piper guineense Schumach. & Thonn. (Piperaceae), Zanthoxylum zanthoxyloides Lam. (Rutaceae), Amaranthus viridis L. (Amaranthaceae), Costus afer Ker-Gawl. (Zingiberaceae) and Catharanthus roseus (L.) G. Don. (Apocynaceae) on estrogen receptor-α (ESR-α), tumor protein p53 (TP-53), retinoblastoma (RB) and NAD(P) H quinine oxidoreductase (NQO1) genes in cervical cancer cell line (HeLa cells). n-Hexane, ethylacetate, chloroform, and water fractions of 80% ethanol extracts of study plants were screened with brine shrimp lethality and water-soluble tetrazolium-1 (WST-1) cytotoxicity assay. HeLa cells were treated with 1:10 dilutions of IC₅₀ concentrations of test fractions for 24 h, total RNA was extracted, RNA quality was checked, and normalized to a baseline concentration Gene expression were monitored by semi-quant. reverse transcription-polymerase chain reaction (RT-PCR). Results showed that ESR-α was downregulated (p < 0.05) by P. guineense-hexane, C. roseus- chloroform and A. viridis-ethylacetate fractions. TP53 gene was up-regulated (p < 0.05) by P. guineense-hexane and Z. zanthoxyloides-ethylacetate fractions. None of the test fractions caused an up-regulation in the expression of retinoblastoma gene. NQO1 gene was down-regulated (p < 0.05) by C. roseus-chloroform, P. guineense-hexane, A. viridis, C. afer, and Z. zanthoxyloides ethylacetate fractions. Our study provides scientific evidence of the possible anti-proliferative potentials of C. roseus-chloroform, P. guineense-hexane, ethylacetate fractions of A. viridis, C.afer, and Z. zanthoxyloides in cervical cancer.

Tropical Journal of Natural Product Research published new progress about 192820-78-3. 192820-78-3 belongs to indole-building-block, auxiliary class Fused/Partially Saturated Cycles,Dihydroindoles, name is 5-Methoxy-1,2-dimethyl-3-[(4-nitrophenoxy)methyl]indole-4,7-dione, and the molecular formula is C18H16N2O6, Synthetic Route of 192820-78-3.

Referemce:
https://www.nature.com/articles/s41429-020-0333-2,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Trost, Barry M. published the artcileEnantioselective Divergent Synthesis of C19-Oxo Eburnane Alkaloids via Palladium-Catalyzed Asymmetric Allylic Alkylation of an N-Alkyl-α,β-unsaturated Lactam, Application In Synthesis of 167015-84-1, the publication is Journal of the American Chemical Society (2019), 141(12), 4811-4814, database is CAplus and MEDLINE.

The C19-oxo-functionalized eburnane alkaloids display a unique chem. structure and interesting biol. activity. Herein, we report a divergent enantioselective strategy to access these alkaloids by use of a challenging palladium-catalyzed asym. allylic alkylation of N-alkyl-α,β-unsaturated lactam I. 19-(S)-OH-Δ¹⁴-Vincamone (II, phutdonginin), (-)-19-OH-eburnamine (III), (+)-19-oxoeburnamine (IV), and (+)-19-OH-eburnamonine (V) have been concisely synthesized for the first time in 11 to 13 steps.

Journal of the American Chemical Society published new progress about 167015-84-1. 167015-84-1 belongs to indole-building-block, auxiliary class Indols, name is tert-Butyl 3-(2-aminoethyl)-1H-indole-1-carboxylate, and the molecular formula is C22H18O2, Application In Synthesis of 167015-84-1.

Referemce:
https://www.nature.com/articles/s41429-020-0333-2,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Miller, David D. published the artcile3,5-Disubstituted-indole-7-carboxamides: The discovery of a novel series of potent, selective inhibitors of IKK-β, COA of Formula: C9H6BrNO2, the publication is Bioorganic & Medicinal Chemistry Letters (2011), 21(8), 2255-2258, database is CAplus and MEDLINE.

The discovery and hit-to-lead exploration of a novel series of selective IKK-β kinase inhibitors is described. The initial lead fragment 3 (I) was identified by pharmacophore-directed virtual screening. Homol. model-driven SAR exploration of the template led to potent inhibitors, such as 12 (II), which demonstrate efficacy in cellular assays and possess encouraging developability profiles.

Bioorganic & Medicinal Chemistry Letters published new progress about 860624-90-4. 860624-90-4 belongs to indole-building-block, auxiliary class Indole,Bromide,Carboxylic acid,Indole, name is 5-Bromo-1H-indole-7-carboxylic acid, and the molecular formula is C9H6BrNO2, COA of Formula: C9H6BrNO2.

Referemce:
https://www.nature.com/articles/s41429-020-0333-2,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles