[EN] NOVEL AZA-OXO-INDOLES FOR THE TREATMENT AND PROPHYLAXIS OF RESPIRATORY SYNCYTIAL VIRUS INFECTION [FR] NOUVEAUX AZA-OXO-INDOLES POUR LE TRAITEMENT ET LA PROPHYLAXIE DE L'INFECTION PAR LE VIRUS RESPIRATOIRE SYNCYTIAL
improved efficiency. N-Phenyl-N-aceto-vinylsulfonamide exhibits higher reactivity and has emerged as an efficient reagent that has the ability to realize the selective modification of peptides and proteins at the N-terminus via aza-Michael addition. We showed that, after conjugation of peptides and proteins with the reagent containing a bioorthogonal functional group, the derivatives could be further
合成并筛选了许多乙烯基磺酰胺,以鉴定可用于在生物 pH 值和室温下以更高的效率修饰奥曲肽的试剂。N-Phenyl-N-aceto-vinylsulfonamide 表现出更高的反应性,并已成为一种有效的试剂,能够通过 aza-Michael 加成在 N 端实现肽和蛋白质的选择性修饰。我们表明,在肽和蛋白质与含有生物正交官能团的试剂缀合后,衍生物可以通过功能进一步标记,包括荧光标签、修饰药物和聚乙二醇 (PEG) 聚合物,而无需事先处理。生长抑素、溶菌酶和 RNaseA 在 N 端进行了选择性修饰,说明了该方法的应用。
Zn/CuI-Mediated Coupling of Alkyl Halides with Vinyl Sulfones, Vinyl Sulfonates, and Vinyl Sulfonamides
作者:Matthew M. Zhao、Chuanxing Qu、Joseph E. Lynch
DOI:10.1021/jo050500g
日期:2005.8.1
A novel high-yielding Zn/CuI-mediated coupling method of alkylhalides with vinyl sulfones, vinyl sulfonates, and vinyl sulfonamides is described. This protocol is applicable for primary, secondary, and tertiary alkyl iodides and bromides. Alkyl chlorides and aryl and vinyl halides were unreactive under the reaction conditions. Formamide was found to be a superior solvent for obtaining high yields
palladium-catalyzed intramolecular alfa-arylation leading to tetrahydroisoquinolines. While the sulfonate alfa-arylation can be successfully combined in a domino process with a broad range of Michael acceptors, only vinyl sulfones can be used in Michael additions when starting from sulfonamides. No domino process was developed with the phosphonate derivative. Density functional theory (DFT) calculations
The invention provides new macrolides antibiotics of formula I with improved biological properties and having the formula
1
wherein R
1
, R
2
and R
3
are as herein described.