Iridium-Catalyzed Asymmetric Allylic Alkylation of Deconjugated Butyrolactams
作者:Sankash Mitra、Santanu Mukherjee
DOI:10.1021/acs.orglett.1c00697
日期:2021.4.16
Compared with the ever-growing list of nonprochiral nucleophiles in Ir-catalyzed asymmetricallylic substitution reactions, prochiral nucleophiles are less studied. We present a new prochiral nucleophile, namely, deconjugated butyrolactam, for Ir-catalyzed asymmetricallylicalkylation (AAA). This reaction provides access to α-allyl deconjugated butyrolactams with a moderate to good dr and an excellent
Three-component access to 2-pyrrolin-5-ones and their use in target-oriented and diversity-oriented synthesis
作者:Ángel Cores、Verónica Estévez、Mercedes Villacampa、J. Carlos Menéndez
DOI:10.1039/c6ra06317a
日期:——
The Hantzsch-type microwave-assisted, solvent-free sequential three-component reaction between primary amines, [small beta]-dicarbonyl compounds and [small alpha]-bromoesters in the presence of indium trichloride afforded 2-pyrrolin-5-ones, which are difficult to access by alternative methods....
Catalytic Enantioselective C–C Bond-Forming Reactions of Deconjugated Butyrolactams: Michael Addition to α,β-Unsaturated Aldehydes and Ketones
作者:Soumya Jyoti Singha Roy、Santanu Mukherjee
DOI:10.1021/acs.joc.8b02051
日期:2018.10.5
deconjugated butyrolactams has been demonstrated for enantioselective Michaeladditions to α,β-unsaturated aldehydes and ketones. These reactions are catalyzed by diphenylprolinol silyl ether and trans-1,2-diaminocyclohexane-derived bifunctional primary aminothiourea, respectively, producing the Michael adducts with moderate diastereoselectivities and good to excellent enantioselectivities (up to 99:1 er). Unlike
The Green Synthesis of 2‐Pyrrolin‐5‐ones from Bio‐renewable Glyoxal, Diketones and Amines
作者:Aanuoluwapo O. Oyejobi、Dandan Gao、Jiahua Wang、Xiang‐Ying Tang、Long Wang
DOI:10.1002/ejoc.202400063
日期:2024.4.2
An efficient and environmentally benign method was developed for the synthesis of 2-pyrrolin-5-ones from dicarbonyl compounds, bio-renewable glyoxal, and amines. More than 25 new 2-pyrrolin-5-one compounds were synthesized in good to high yields under mild conditions.
[EN] PYRAZOLE AND PYRROLE COMPOUNDS USEFUL IN TREATING IRON DISORDERS<br/>[FR] COMPOSÉS À BASE DE PYRAZOLE ET DE PYRROLE UTILES DANS LE TRAITEMENT DE TROUBLES DU MÉTABOLISME DU FER
申请人:XENON PHARMACEUTICALS INC
公开号:WO2008121861A2
公开(公告)日:2008-10-09
[EN] This invention is directed to pyrazole and pyrrole compounds, for example, compounds of formula (I): wherein R1, R2, R3 and R4 are as defined herein, as stereoisomers, enantiomers, tautomers thereof or mixtures thereof; or pharmaceutically acceptable salts, solvates or prodrugs thereof, for the treatment of iron disorders. This invention is also directed to pharmaceutical compositions comprising the compounds and methods of using the compounds to treat iron disorders. [FR] L'invention concerne des composés à base de pyrazole et de pyrrole, par exemples des composés de formule (I) où R1, R2, R3 et R4 sont tels que définis dans la description, tels que leurs stéréoisomères, énantiomères, tautomères ou leurs mélanges, ou sels pharmaceutiquement acceptables, leurs solvates ou promédicaments, destinés au traitement de troubles du métabolisme du fer. L'invention concerne également des compositions pharmaceutiques renfermant ces composés et des procédés d'utilisation de ces composés pour traiter les troubles du métabolisme du fer.