nBu4NI-catalyzed cross-coupling of benzyl and allylic compounds with N-hydroxyphthalimide for the synthesis of alkyloxyamines were realized for the first time.
6-O-substituted ketolides having antibacterial activity
申请人:Abbott Laboratories
公开号:US05866549A1
公开(公告)日:1999-02-02
Antimicrobial compounds having the formula ##STR1## as well as pharmaceutically acceptable salts, esters or prodrugs thereof; pharmaceutical compositions comprising such compounds; methods of treating bacterial infections by the administration of such compounds; and processes for the preparation of the compounds.
PROBLEM TO BE SOLVED: To provide 6-O-substituted ketolides with antibacterial activity, having acid stability and enhanced activity toward gram negative bacteria and macrolide resistant gram positive bacteria.SOLUTION: This invention provides 6-O-substituted erythromycin ketolide derivatives such as formula (II) and compositions comprising the compounds. [Y and Z together form a group X; X is ketone, hydroxyimino or the like; or, one of Y and Z is H and the other is hydrogen, hydroxy or the like; Ris H, hydroxy; Ris H or a hydroxy protective group; R is a substituted methyl group].
[EN] 6-O-SUBSTITUTED KETOLIDES HAVING ANTIBACTERIAL ACTIVITY<br/>[FR] CETOLIDES SUBSTITUES EN 6-O POSSEDANT UNE ACTIVITE ANTIBACTERIENNE
申请人:ABBOTT LABORATORIES
公开号:WO1998009978A1
公开(公告)日:1998-03-12
(EN) Antimicrobial compounds having formula (II), (III), (IV), (IV-A) or (V) as well as pharmaceutically acceptable salts, esters or prodrugs thereof; pharmaceutical compositions comprising such compounds; methods of treating bacterial infections by the administration of such compounds; and processes for the preparation of the compunds.(FR) L'invention concerne des composés antimicrobiens de la formule: (II); (III); (IV); (IV-A); ou (V); ainsi que des sels, esters ou promédicaments de ceux-ci, acceptables d'un point de vue pharmaceutique; des compositions pharmaceutiques comprenant de tels composés; des procédés destinés à traiter des infections bactériennes par l'administration de tels composés; et des procédés destinés à la préparation de ces composés.
Asymmetric synthesis of pyrrolo[2,3–b]indole scaffolds by organocatalytic [3 + 2] dearomative annulation
作者:Heng-Zhi Tian、Sheng-Feng Wu、Guo-Qiang Lin、Xing-Wen Sun
DOI:10.1016/j.tetlet.2022.153969
日期:2022.8
An organocatalytic approach for the stereoselectivesynthesis of pyrrolo[2,3–b]indoles is presented. The developed methodology is based on the [3 + 2] dearomative annulation reaction between 3-nitroindoles and fumaric acid amide esters. Products bearing three adjacent stereogenic centers, one being quaternary, were formed with excellent yields, good diastereoselectivities and decent enantioselectivities
提出了一种立体选择性合成吡咯并[2,3- b ]吲哚的有机催化方法。开发的方法基于 3-硝基吲哚和富马酸酰胺酯之间的 [3 + 2] 脱芳环反应。具有三个相邻立体中心(一个是四元中心)的产物以优异的收率、良好的非对映选择性和良好的对映选择性形成。