Synthesis of α-Hydroxycarboxylic Acids from Various Aldehydes and Ketones by
Direct Electrocarboxylation: A Facile, Efficient and Atom Economy Protocol
In present work, the formation of α-hydroxycarboxylic acids have been described from various aromatic aldehydes and ketones via direct electrocarboxylation method with 80-92% of yield without any side product and can be purified by simple recrystallization using sacrificial Mg anode and Pt cathode in an undivided cell, CO2 at (1 atm) was continuously bubbled in the cell throughout the reaction using
Abstract α‐Hydroxy carboxylic acids are synthesized in 80–86% isolated yields by electrochemical carboxylation of methyl aryl ketones in the presence of carbon dioxide (1 atm.) using a platinum cathode and a sacrificial magnesium anode at a constant current density of 10 mA/cm2. Reversibility of the carbonyl group reduction and generation of anionic radical were shown by cyclic voltammetry.
Amide derivatives, process for their manufacture and pharmaceutical or veterinary compositions containing them
申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0040932A1
公开(公告)日:1981-12-02
Novel 3,4-disubstituted-N-acylanilines of the formula:
wherein Rl, R2 and ring A are defined in claim 1;
wherein R3 is hydrogen or alkyl of up to 4 carbon atoms, or is joined to R5 as stated below;
wherein R4 is alkyl of 2 to 4 carbon atoms, or has the formula -CX1X2X3 wherein X1, X2 and X3, which may be the same or different, each is hydrogen, fluorine or chlorine;
wherein R5 is hydrogen, hydroxy or alkoxy or acyloxy each of up to 15 carbon atoms, or is joined to R3 to form an oxycarbonyl group such that together with the I -N-CO-C- part of the molecule it forms an oxazolidinedione group; and
wherein R6 is hydrogen or halogen. These compounds possess antiandrogenic activity and are useful for the treatment of androgen dependent or prostatic diseases. Representative of the compounds is 3,4-dichloro-N-(2-hydroxy-2-p-nitrophenylpropionyl)aniline. Also disclosed are processes for the manufacture of the compounds and pharmaceutical and veterinary compositions containing them.
Novel derivatives of PF1022 substance, which are cyclodepsipeptides represented by the general formula (I) shown below or their salts are useful as anthelmintic agent for prevention or treatment of parasitic infections.
Biaryl urea derivative or salt thereof and preparation process and use for the same
申请人:Fudan University
公开号:US10647665B2
公开(公告)日:2020-05-12
The present invention discloses a biaryl urea RORγt inhibitor, and specifically relates to a biaryl urea derivative, as represented by formula I, with an RORγt inhibiting activity, and a preparation process thereof, and a pharmaceutical composition comprising the compound. Further disclosed is use of the compound for treating an RORγt-related disease.
本发明公开了一种双芳基脲 RORγt 抑制剂,具体涉及一种由式 I 表示的具有 RORγt 抑制活性的双芳基脲衍生物及其制备工艺,以及包含该化合物的药物组合物。进一步公开了该化合物用于治疗 RORγt 相关疾病的用途。