The Spiro compound represented by the following general formula [Ia], its pharmaceutically acceptable salt or a solvate thereof
以下是用中文翻译的结果:由下列通用式[Ia]表示的螺环化合物,其药用可接受盐或其溶剂化合物
ANTIMICROBIAL AND ANTITUBERCULAR COMPOUNDS
申请人:Sorensen Erik J.
公开号:US20120010281A1
公开(公告)日:2012-01-12
Infections caused by
Mycobacterium tuberculosis
kill more than 1.8 million people each year. While the persistence of this pathogenic bacterial species and the emergence of multidrug resistant strains have created an urgent need for new TB therapies, a new TB-specific drug has not been developed in over 40 years. The disclosure herein provides short and scalable syntheses of small molecules, and small molecules as new therapeutics for eradicating this life threatening pathogen.
A concise synthesis of the molecular framework of pleuromutilin
作者:Junjia Liu、Stephen D. Lotesta、Erik J. Sorensen
DOI:10.1039/c0cc04077k
日期:——
Two syntheses of the tricyclic carbon skeleton of pleuromutilin are reported. Diastereoselective 1,4-conjugate additions were used to elaborate bicyclic precursors at an early stage of each route, while ring-forming olefin metatheses were executed to complete the pleuromutilin carbon framework. The congeners prepared are appropriately functionalized to enable access to diverse pleuromutilin analogues.
New Route to Azaspirocycles via the Organolithium-Mediated Conversion of β-Alkoxy Aziridines into Cyclopentenyl Amines
作者:Stephen P. Moore、Susannah C. Coote、Peter O'Brien、John Gilday
DOI:10.1021/ol062073e
日期:2006.10.1
A new three-step route to azaspirocycles involving the organolithium-mediated conversion of beta-alkoxy aziridines into substituted cyclopentenyl amines, hydroboration, and cyclization has been developed. The methodology is utilized in the construction of the pentacyclic ring system of cephalotaxine. [reaction: see text]
Five-membered ring annulation via thermal rearrangement of β-cyclopropyl α,β-unsaturated ketones. A formal total synthesis of the sesquiterpenoid (±)-zizaene
作者:Edward Piers、Jacques Banville、Cheuk Kun Lau、Isao Nagakura
DOI:10.1139/v82-425
日期:1982.12.1
1-one (16) was allowed to react with dimethyloxosulfonium methylide in dimethyl sulfoxide – tetrahydrofuran, 3-(1-methylcyclopropyl)-2-cyclohexen-1-one (17) was produced in 59% yield. Although thermal rearrangement (~425–450 °C) of compounds 11 and 17 produced high yields of the annulation products 19 and 22, respectively, similar reactions involving the β-cyclopropyl enones 12 and 13 were not efficient