Category: indole-building-block

Achab, Said published the artcileA short route to functionalized imidazo[4,5-c]carbazoles. Synthesis of the first example of the imidazo[4,5-c]β-carboline ring system, Product Details of C15H14BNO4S, the publication is Tetrahedron Letters (2001), 42(50), 8825-8828, database is CAplus.

A new synthetic route to the functionalized imidazo[4,5-c]carbazole I, via intramol. electrocyclization of the vinylimidazolylindole II is described. Thermally induced ring-closure of the (4-amino-5-imidazolyl)-3-indolecarboxylate III led to the previously unknown imidazo[4,5-c]-β-carboline ring system IV. These heterocycles were efficiently converted into analogs of both the marine cytotoxic agents grossularines-1 and -2 and the antimicrobial alkaloid eudistomin U.

Tetrahedron Letters published new progress about 149108-61-2. 149108-61-2 belongs to indole-building-block, auxiliary class Indole,Boronic acid and ester,Sulfamide,Benzene,Boronic Acids,Boronic Acids,Boronic acid and ester,, name is (1-tosyl-1H-Indol-3-yl)boronic acid, and the molecular formula is C15H14BNO4S, Product Details of C15H14BNO4S.

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

Sadaie, Mahito published the artcileCell-based screen for altered nuclear phenotypes reveals senescence progression in polyploid cells after Aurora kinase B inhibition, COA of Formula: C19H21N3O3S, the publication is Molecular Biology of the Cell (2015), 26(17), 2971-2985, database is CAplus and MEDLINE.

Cellular senescence is a widespread stress response and is widely considered to be an alternative cancer therapeutic goal. Unlike apoptosis, senescence is composed of a diverse set of subphenotypes, depending on which of its associated effector programs are engaged. Here we establish a simple and sensitive cell-based prosenescence screen with detailed validation assays. We characterize the screen using a focused tool compound kinase inhibitor library. We identify a series of compounds that induce different types of senescence, including a unique phenotype associated with irregularly shaped nuclei and the progressive accumulation of G1 tetraploidy in human diploid fibroblasts. Downstream analyses show that all of the compounds that induce tetraploid senescence inhibit Aurora kinase B (AURKB). AURKB is the catalytic component of the chromosome passenger complex, which is involved in correct chromosome alignment and segregation, the spindle assembly checkpoint, and cytokinesis. Although aberrant mitosis and senescence have been linked, a specific characterization of AURKB in the context of senescence is still required. This proof-of-principle study suggests that our protocol is capable of amplifying tetraploid senescence, which can be observed in only a small population of oncogenic RAS-induced senescence, and provides addnl. justification for AURKB as a cancer therapeutic target.

Molecular Biology of the Cell 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, COA of Formula: C19H21N3O3S.

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

Donaldson, Robert M. Jr. published the artcileUrinary excretion of indolic compounds in rats with intestinal pouches, Application In Synthesis of 2642-37-7, the publication is American Journal of Physiology (1961), 794-6, database is CAplus and MEDLINE.

The urinary excretion of indican and free and total indoleacetic acid is significantly increased in the rat in the presence of a localized area of intestinal stasis produced surgically by the creation of a pouch in the small intestine. Tryptamine, serotonin, and 5-hydroxyindoleacetic acid excretion in the urine is not altered. Intestinal stasis and bacterial activity within the pouch are responsible for the increased amounts of indican and indoleacetic acid in the urine.

American Journal of Physiology published new progress about 2642-37-7. 2642-37-7 belongs to indole-building-block, auxiliary class Indole,Salt,Sulfonate,Inhibitor,Inhibitor, name is Potassium 1H-indol-3-yl sulfate, and the molecular formula is C8H6KNO4S, Application In Synthesis of 2642-37-7.

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

Nycholat, Corwin M. published the artcileA sulfonamide sialoside analogue for targeting Siglec-8 and -F on immune cells, Synthetic Route of 166883-20-1, the publication is Journal of the American Chemical Society (2019), 141(36), 14032-14037, database is CAplus and MEDLINE.

The Siglec family of cell surface receptors have emerged as attractive targets for cell-directed therapies due to their restricted expression on immune cells, endocytic properties, and ability to modulate receptor signaling. Human Siglec-8, for instance, has been identified as a therapeutic target for the treatment of eosinophil and mast cell disorders. A promising strategy to target Siglecs involves the use of liposomal nanoparticles with a multivalent display of Siglec ligands. A key challenge for this approach is the identification of a high affinity ligand for the target Siglec. Here, we report the development of a ligand of Siglec-8 and its closest murine functional orthologue Siglec-F that is capable of targeting liposomes to cells expressing Siglec-8 or -F. A glycan microarray library of synthetic 9-N-sulfonyl sialoside analogs was screened to identify potential lead compounds The best ligand, 9-N-(2-naphthyl-sulfonyl)-Neu5Acα2-3-[6-O-sulfo]-Galβ1-4GlcNAc (6′-O-sulfo ^NSANeu5Ac) combined the lead 2-naphthyl sulfonyl C-9 substituent with the preferred sulfated scaffold. The ligand 6′-O-sulfo ^NSANeu5Ac was conjugated to lipids for display on liposomes to evaluate targeted delivery to cells. Targeted liposomes showed strong in vitro binding/uptake and selectivity to cells expressing Siglec-8 or -F and, when administered to mice, exhibit in vivo targeting to Siglec-F⁺ eosinophils.

Journal of the American Chemical Society 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, Synthetic Route of 166883-20-1.

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

Gallant, Michel published the artcileNew class of potent ligands for the human peripheral cannabinoid receptor, SDS of cas: 2854-32-2, the publication is Bioorganic & Medicinal Chemistry Letters (1996), 6(19), 2263-2268, database is CAplus.

Indoles, e.g. I (R¹ = morpholino, morpholinocarbonyl, CO₂Me, CO₂H, morpholinomethyl; R² = 2-, 4-ClC₆H₄, 1-, 2-naphthyl, etc.), were prepared as potent ligands for the human peripheral cannabinoid (hCB₂) receptor. Two of these indole analogs exhibited nanomolar potencies (K_i) with good selectivity for the hCB₂ receptor over the human central cannabinoid (hCB₁) receptor.

Bioorganic & Medicinal Chemistry Letters 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

Hara, Toshiaki published the artcileProbing the Structural Requirements of Peptoids That Inhibit HDM2-p53 Interactions, Safety of tert-Butyl 3-(2-aminoethyl)-1H-indole-1-carboxylate, the publication is Journal of the American Chemical Society (2006), 128(6), 1995-2004, database is CAplus and MEDLINE.

Many cellular processes are controlled by protein-protein interactions, and selective inhibition of these interactions could lead to the development of new therapies for several diseases. For example, overexpression of the protein HDM2 (human double minute 2), which binds to and inactivates the protein p53, has been linked to tumor aggressiveness and drug resistance in cancer. In creating inhibitors of protein-protein interactions, one strategy is to recreate the three-dimensional arrangement of side chains that are involved in the binding of one protein to another, using a nonnatural scaffold as the attachment point for the side chains. Here, the authors used oligomeric peptoids as the scaffold to develop a general strategy to rationally design synthetic mols. that can be optimized for inhibition of protein-protein interactions. Structural information on the HDM2-p53 complex was used to design the first class of peptoid inhibitors, and this work provides, in detail, the strategy to modify peptoids with the appropriate side chains that are effective inhibitors of HDM2-p53 binding. While the authors initially tried to develop rigid, helical peptoids as HDM2 binders, the best inhibitors were surprisingly peptoids that lacked any helix-promoting groups. These results indicate that starting with rigid peptoid scaffolds may not always be optimal to develop new inhibitors.

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 C15H20N2O2, Safety of 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

Anderson, Kirsty published the artcileOne-pot oxidative hydrolysis-oxidative cleavage of 7-borylindoles enables access to o-amidophenols and 4-acylbenzoxazoles, COA of Formula: C15H20BNO2, the publication is Chemical Communications (Cambridge, United Kingdom) (2020), 56(24), 3559-3562, database is CAplus and MEDLINE.

The compounds 7-borylindoles I (R¹ = H, Me, n-Pr, BPin, Ph, 4-fluorophenyl; R² = H, Me, Et, 4-methoxyphenyl; R³ = H, Me, F, Cl, Br, NO₂, BnO) undergo a one-pot oxidative-hydrolysis of the arylboronate and oxidative cleavage of the indole C2-C3 double bond to afford o-amidophenol derivatives 2-OH-4-R³-6-(R²C(O))-C₆H₂NHC(O)R¹. Subsequent cyclization delivers benzoxazoles II bearing an acyl group at C4, a substitution pattern common to fungal-derived benzoxazole alkaloids. Using 7-borylindoles I as substrates to access functionalized o-amidophenols, the difficult preparation of these compounds from arene, streamlining access to substituted 4-acylbenzoxazoles II in the process is circumvented.

Chemical Communications (Cambridge, United Kingdom) published new progress about 919119-59-8. 919119-59-8 belongs to indole-building-block, auxiliary class Indole,Boronic acid and ester,Boronate Esters,Boronic Acids,Boronic acid and ester, name is 2-Methyl-7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole, and the molecular formula is C15H20BNO2, COA of Formula: C15H20BNO2.

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

El-Gendy, Adel A. published the artcileSynthesis and antihypertensive activity of certain Mannich bases of 2-ethoxycarbonylindoles and 5H-pyridazino[4,5-b]indoles, SDS of cas: 100123-25-9, the publication is Archives of Pharmacal Research (2001), 24(1), 21-26, database is CAplus and MEDLINE.

The synthesis of 3-(aminomethyl)-1H-indole-2-carboxylic acid Et ester derivatives and of 3-(aminomethyl)-3,5-dihydro-4H-pyridazino[4,5-b]indol-4-one derivatives was reported. Fourteen of the synthesized Mannich bases were screened as antihypertensive agents in normotensive anesthetized rats. The effect of 3-[(diethylamino)methyl]-1H-indole-2-carboxylic acid Et ester hydrochloride in normotensive anesthetized dogs was also studied.

Archives of Pharmacal Research published new progress about 100123-25-9. 100123-25-9 belongs to indole-building-block, auxiliary class Indole,Bromide,Ester,Aldehyde, name is Ethyl 5-bromo-3-formyl-1H-indole-2-carboxylate, and the molecular formula is C12H10BrNO3, SDS of cas: 100123-25-9.

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

Taylor, Nicholas J. published the artcileDerisking the Cu-Mediated ¹⁸F-Fluorination of Heterocyclic Positron Emission Tomography Radioligands, Related Products of indole-building-block, the publication is Journal of the American Chemical Society (2017), 139(24), 8267-8276, database is CAplus and MEDLINE.

The compatibility of various heterocycles, particularly nitrogen heterocycles, towards the copper-mediated ¹⁸F-fluorination of aryl pinacolboronates with ¹⁸F-fluoride was determined using fluorination reactions of a model substrate in the presence of exogenous heterocycles and the fluorination reactions of substrates possessing heterocycles with fluorination on an attached aromatic ring or directly attached to the heterocycle of interest. Using this information, syntheses of seven ¹⁸F-labeled structurally complex pharmaceutically relevant heterocycle-containing mols. were designed and executed. The method may be useful in designing syntheses of other radiolabeled compounds and delineating the scope of utility of other radiolabeling methods.

Journal of the American Chemical Society published new progress about 642494-36-8. 642494-36-8 belongs to indole-building-block, auxiliary class Indole,Boronic acid and ester,Indole,Boronate Esters,Boronic acid and ester, name is 6-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole, and the molecular formula is C23H43NP2, Related Products of indole-building-block.

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

Chmielarz, Piotr published the artcileGDNF/RET Signaling Pathway Activation Eliminates Lewy Body Pathology in Midbrain Dopamine Neurons, Application In Synthesis of 330161-87-0, the publication is Movement Disorders (2020), 35(12), 2279-2289, database is CAplus and MEDLINE.

Parkinson’s disease (PD) is associated with proteostasis disturbances and accumulation of misfolded α-synuclein (α-syn), a cytosolic protein present in high concentrations at pre-synaptic neuronal terminals. It is a primary constituent of intracellular protein aggregates known as Lewy neurites or Lewy bodies. Progression of Lewy pathol. caused by the prion-like self-templating properties of misfolded α-syn is a characteristic feature in the brains of PD patients. Glial cell line-derived neurotrophic factor (GDNF) promotes survival of mature dopamine (DA) neurons in vitro and in vivo. However, the data on its effect on Lewy pathol. is controversial. We studied the effects of GDNF on misfolded α-syn accumulation in DA neurons. Lewy pathol. progression was modeled by the application of α-syn preformed fibrils in cultured DA neurons and in the adult mice. We discovered that GDNF prevented accumulation of misfolded α-syn in DA neurons in culture and in vivo. These effects were abolished by deletion of receptor tyrosine kinase rearranged during transfection (RET) or by inhibitors of corresponding signaling pathway. Expression of constitutively active RET protected DA neurons from fibril-induced α-syn accumulation. For the first time, we have shown the neurotrophic factor-mediated protection against the misfolded α-syn propagation in DA neurons, uncovered underlying receptors, and investigated the involved signaling pathways. These results demonstrate that activation of GDNF/RET signaling can be an effective therapeutic approach to prevent Lewy pathol. spread at early stages of PD.

Movement Disorders 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, Application In Synthesis 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