Rearrangement of 3-Hydroxyazetidines into 2-Oxazolines
作者:Michele Ruggeri、Amanda W. Dombrowski、Stevan W. Djuric、Ian R. Baxendale
DOI:10.1021/acs.joc.0c00656
日期:2020.6.5
A novel rearrangement sequence of 3-hydroxyazetidines via a Ritter initiated cascade provides highly substituted 2-oxazolines in high yields. The reaction conditions and substrate scope of the transformation have been studied demonstrating the generality of the process. The derived products can also be functionalized in order to undergo further intramolecular cyclization leading to a new class of macrocycle
inhibitors of the phosphorolytic activity of native and drug-resistant forms of HIV-1 reverse transcriptase (RT) was performed. It was shown that with the increase of the inhibitory potential of BPs towards the phosphorolytic activity raises their ability to inhibit the RT-catalyzed DNA elongation. Herein, we report the impact of the thymidine analog mutations (TAM) on the activity of bisphosphonates, as well
Synthesis of fused cyanopyrroles and spirocyclopropanes via addition of N-ylides to chalconimines
作者:Siba Prasad Midya、Elumalai Gopi、Nishikant Satam、Irishi N. N. Namboothiri
DOI:10.1039/c7ob00529f
日期:——
Addition of N-ylides derived from DABCO to chalconimines takes place through a Michael addition–cyclization pathway to afford fused cyanopyrroles and/or spirocyclopropanes. The product profile depends heavily on the nature of chalconimines. While 6-membered cyclic chalconimines provide a mixture of pyrrole and spirocyclopropane, 5-membered chalconimines furnish exclusively spirocyclopropane. Cyclopropane
DERIVES DE STREPTOGRAMINES, LEUR PREPARATION ET LES COMPOSITIONS QUI LES CONTIENNENT
申请人:Aventis Pharma S.A.
公开号:EP1056771B1
公开(公告)日:2005-11-30
[EN] STREPTOGRAMIN DERIVATIVES, PREPARATION METHOD AND COMPOSITIONS CONTAINING SAME<br/>[FR] DERIVES DE STREPTOGRAMINES, LEUR PREPARATION ET LES COMPOSITIONS QUI LES CONTIENNENT
申请人:AVENTIS PHARMA S.A.
公开号:WO1999043699A1
公开(公告)日:1999-09-02
(EN) The invention concerns group B streptogramin derivatives of general formula (I) wherein Ra, Rb, Rc, Rd, R1, R2 and Y are as defined in the description. Said derivatives are particular useful as antimicrobial agents, optionally combined with at least on group A streptogramin derivative.(FR) Dérivés du groupe B des streptogramines de formule générales (I) dans laquelle Ra, Rb, Rc, Rd, R1, R2 et Y sont définis comme décrit dans la description. Ces dérivés sont particulièrement intéressants comme agents antimicrobiens, éventuellement associés à au moins un dérivé de streptogramine du groupe A.