[EN] HEMIAMINAL-TAG FOR PROTEIN LABELING AND PURIFICATION<br/>[FR] ÉTIQUETTE HÉMIAMINAL POUR LE MARQUAGE ET LA PURIFICATION DE PROTÉINES
申请人:INDIAN INSTITUTE OF SCIENCE EDUCATION AND RES BHOPAL
公开号:WO2018104962A1
公开(公告)日:2018-06-14
The invention pertains to the synthesis, isolation, and characterization of hemiaminal for selective labeling of peptides, proteins, antibodies, and organic fragments with -C(=0) CH2NH2 and derivatives with -CH2NH2 group over -C(=0) CHRNH2 group (where R≠H). The invention also pertains to the method of single-site immobilization of proteins through N-terminus Gly on solid phase. The invention includes late-stage tagging of N-terminus Gly with an affinity tag, 19F NMR probe, and a fluorophore and a method for metal-free protein purification and isolation of analytically pure proteins.
Efficient synthesis of novel bis(dihydropyrano[2,3c]pyrazoles), bis(4H-chromenes) and bis(dihydropyrano[3,2-c]chromenes) with amide functionality
作者:Amna M. Abdella、Amr M. Abdelmoniem、Holger Butenschön、Ismail A. Abdelhamid、Ahmed H. M. Elwahy
DOI:10.24820/ark.5550190.p011.071
日期:——
A synthesis of novel bis(1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitriles), bis(4H-chromene-3-carbonitriles) and bis(dihydropyrano[3,2-c]chromenes), which are linked to aliphatic spacers via amide linkages was achieved via multicomponent reactions (MCR) of the appropriate bis-aldehyde with two equivalents of both of malononitrile and 3-methylpyrazol-5-one, dimedone or 4-hydroxycoumarin in a basic solution
Microwave-assisted three component synthesis of novel bis-fused quinazolin-8(4<i>H</i>)-ones linked to aliphatic or aromatic spacer<i>via</i>amide linkages
作者:Ibrahim M. Z. Fares、Ahmed E. M. Mekky、Ahmed H. M. Elwahy、Ismail A. Abdelhamid
DOI:10.1080/00397911.2020.1725575
日期:2020.3.18
Abstract A novel series of bis(tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8-ones) and bis(tetrahydrobenzo[4,5]imidazo[2,1-b]quinazolinones) containing amide linkages were regionselectively prepared via a three-component reaction of bis(aldehydes) with dimedone and 3-amino-1,2,4-triazole (or 2-aminobenzimidazole) under conventional heating as well as under microwave irradiation. Graphical Abstract
Facile one-pot, three-component synthesis and antimicrobial screening of novel hexahydropyrimido[4,5-b]quinolinediones incorporating phenoxylacetamide core as novel hybrid molecules via Hantzsch reaction
作者:Hadeer M. Diab、Ahmed H.M. Elwahy、Mohamed A. Ragheb、Ismail A. Abdelhamid、Huda Kamel Mahmoud
DOI:10.1016/j.molstruc.2023.135721
日期:2023.9
pyrimidoquinoline scaffolds to synthesize novel hybrid molecules with an effective therapeutic action for multifactorial illnesses. The Hantzsch process was used to synthesize novel hexahydropyrimido[4,5-b]quinolinediones with a phenoxylacetamide core at position-4 as unique hybrid compounds. The process is carried out in acetic acid via a three-component reaction involving the suitable aldehyde and one