15467-30-8

Upstream product

• 5541-89-9 4-(1H-indol-3-yl)-2-butanone 
• 14105-23-8 4-(3-indolyl)butan-2-one oxime 

Relevant academic research and scientific papers

General and selective synthesis of primary amines using Ni-based homogeneous catalysts

The development of base metal catalysts for industrially relevant amination and hydrogenation reactions by applying abundant and atom economical reagents continues to be important for the cost-effective and sustainable synthesis of amines which represent highly essential chemicals. In particular, the synthesis of primary amines is of central importance because these compounds serve as key precursors and central intermediates to produce value-added fine and bulk chemicals as well as pharmaceuticals, agrochemicals and materials. Here we report a Ni-triphos complex as the first Ni-based homogeneous catalyst for both reductive amination of carbonyl compounds with ammonia and hydrogenation of nitroarenes to prepare all kinds of primary amines. Remarkably, this Ni-complex enabled the synthesis of functionalized and structurally diverse benzylic, heterocyclic and aliphatic linear and branched primary amines as well as aromatic primary amines starting from inexpensive and easily accessible carbonyl compounds (aldehydes and ketones) and nitroarenes using ammonia and molecular hydrogen. This Ni-catalyzed reductive amination methodology has been applied for the amination of more complex pharmaceuticals and steroid derivatives. Detailed DFT computations have been performed for the Ni-triphos based reductive amination reaction, and they revealed that the overall reaction has an inner-sphere mechanism with H2metathesis as the rate-determining step.

MOF-derived cobalt nanoparticles catalyze a general synthesis of amines

The development of base metal catalysts for the synthesis of pharmaceutically relevant compounds remains an important goal of chemical research. Here, we report that cobalt nanoparticles encapsulated by a graphitic shell are broadly effective reductive amination catalysts. Their convenient and practical preparation entailed template assembly of cobaltdiamine- dicarboxylic acid metal organic frameworks on carbon and subsequent pyrolysis under inert atmosphere.The resulting stable and reusable catalysts were active for synthesis of primary, secondary, tertiary, and N-methylamines (more than 140 examples).The reaction couples easily accessible carbonyl compounds (aldehydes and ketones) with ammonia, amines, or nitro compounds, and molecular hydrogen under industrially viable and scalable conditions, offering cost-effective access to numerous amines, amino acid derivatives, and more complex drug targets.

HETEROARYL ESTROGEN RECEPTOR MODULATORS AND USES THEREOF

Described herein are heteroaryl compounds with estrogen receptor modulation activity or function having the Formula (I), (II), and (III) structures: and stereoisomers, tautomers, or pharmaceutically acceptable salts thereof, and with the substituents and structural features described herein. Also described are pharmaceutical compositions and medicaments that include the Formula I, II, and III compounds, as well as methods of using such estrogen receptor modulators, alone and in combination with other therapeutic agents, for treating diseases or conditions that are mediated or dependent upon estrogen receptors.

Spirotetrahydro β-carbolines (spiroindolones): A new class of potent and orally efficacious compounds for the treatment of malaria

The antiplasmodial activity of a series of spirotetrahydro β-carbolines is described. Racemic spiroazepineindole (1) was identified from a phenotypic screen on wild type Plasmodium falciparum with an in vitro IC50 of 90 nM. Structure-activity relationships for the optimization of 1 to compound 20a (IC50 = 0.2 nM) including the identification of the active 1R,3S enantiomer and elimination of metabolic liabilities is presented. Improvement of the pharmacokinetic profile of the series translated to exceptional oral efficacy in the P. berghei infected malaria mouse model where full cure was achieved in four of five mice with three daily doses of 30 mg/kg.

ORGANIC COMPOUNDS

The invention relates to organic compounds which have interesting pharmaceutical properties. In particular, the compounds are useful in the treatment and/or prevention of infections such as those caused by Plasmodium falciparum, Plasmodium vivax, Plasmodium malariae, Plasmodium ovale, Trypanosoma cruzi and parasites of the Leishmania genus such as, for example, Leishmania donovani. The invention also relates to pharmaceutical compositions containing the compounds, as well as processes for their preparation.

Synthesis of α-carbolines from β-(3-indolyl) ketone 0-2,4-dinitrophenyloximes

α-Carbolines are synthesized from β-(3-indolyl) ketone O-2,4-dinitrophenyloximes by the treatment with sodium hydride and sodium cyanoborohydride.