典型的饱和低聚异戊二烯、4,8,12-三甲基壬烷醇的所有四种非对映异构体都是在无痕硫代碳酸酯氟标签的帮助下通过迭代三步循环制备的,以编码配置。标签具有最少的总氟原子数,从零开始并以 1 为增量增加。通过适当的采集和数据处理,每个非对映异构体在其 (1) H 和 (13) C NMR 光谱中都表现出甲基共振的特征化学位移。总之,这些变化为预测高饱和低聚异戊二烯的每个立体异构体的光谱的甲基区域的出现提供了基础。
Final-Stage Site-Selective Acylation for the Total Syntheses of Multifidosides A-C
作者:Yoshihiro Ueda、Takumi Furuta、Takeo Kawabata
DOI:10.1002/anie.201504729
日期:2015.10.5
The first totalsyntheses of multifidosidesA–C have been achieved. The synthetic strategy is characterized by catalytic site‐selective acylation of unprotected glycoside precursors in the final stage of the synthesis. High functional‐group tolerance of the site‐selective acylation, promoted by an organocatalyst, enabled the conventionally difficult molecular transformation in a predictable and reliable
β-Hydroxy sulfones have been transformed to the corresponding radicophilic derivatives (xanthales, selenobenzoates, thionocarbonates) These compounds can then be employed in the synthesis of the corresponding olefins by radical methods without the use of tin reagents.
The invention of radical reactions. Part XXXI. Diphenylsilane: a reagent for deoxygenation of alcohols via their thiocarbonyl derivatives, deamination via isonitriles, and dehalogenation of bromo- and iodo- compounds by radical chain chemistry
作者:Derek H.R. Barton、Doo Ok Jang、Joseph Cs. Jaszberenyi
DOI:10.1016/s0040-4020(01)87198-2
日期:1993.8
Various thionocarbonates and xanthates of alcohols and bis-xanthates of vic-diols are readily deoxygenated to the corresponding hydrocarbons or olefins, while bromides and iodides are dehalogenated with diphenylphenylsilane in good yield.
The present invention concerns novel heteroaryl-N-aryl carbamates and their use in pest control, as insecticides and acaricides This invention also includes preparation of the pesticide compositions containing the compounds, and methods of controlling insects using the compounds.
[EN] ARYL, HETEROARY, AND HETEROCYCLIC PHARMACEUTICAL COMPOUNDS FOR TREATMENT OF MEDICAL DISORDERS<br/>[FR] COMPOSÉS PHARMACEUTIQUES ARYLE, HÉTÉROARYLES ET HÉTÉROCYCLIQUES POUR LE TRAITEMENT DE TROUBLES MÉDICAUX
申请人:ACHILLION PHARMACEUTICALS INC
公开号:WO2018160889A1
公开(公告)日:2018-09-07
Complement Factor D inhibitors, pharmaceutical compositions, and uses thereof, as well as processes for their manufacture are provided. The compounds provided include Formula I, Formula II, Formula III, Formula IV, and Formula V, or a pharmaceutically acceptable salt, prodrug, isotopic analog, N-oxide, or isolated isomer thereof, optionally in a pharmaceutically acceptable composition. The inhibitors described herein target Factor D and inhibit or regulate the complement cascade.