Gold(I)/Copper(II)-Cocatalyzed Tandem Cyclization/Semipinacol Reaction: Construction of 6-<i>Aza/Oxa</i>-Spiro[4.5]decane Skeletons and Formal Synthesis of (±)-Halichlorine
A simple and efficient strategy for the construction of 6‐aza/oxa‐spiro[4.5]decaneskeletons under the cocatalysis of gold(I)/copper(II) was developed, and its potential utility was demonstrated by a formalsynthesis of the biologically active marine alkaloid (±)‐halichlorine.
COMPOUND AS SMALL MOLECULE INHIBITOR PD-1/PD-L1 AND APPLICATION THEREOF
申请人:Medshine Discovery Inc.
公开号:EP4043461A1
公开(公告)日:2022-08-17
A biaryl compound. Specifically disclosed is a compound represented by formula (I) and a pharmaceutically acceptable salt thereof.
一种双芳基化合物。具体公开的是由式(I)表示的化合物及其药学上可接受的盐。
Ru-Catalyzed Asymmetric Hydrogenation of 3-Oxoglutaric Acid Derivatives via Solvent-Assisted Pinpoint Recognition of Carbonyls in Close Chemical Propinquity
Upon comparison of hydrogenation rates of various beta-ketocarboxylic acid derivatives, beta-ketoamides were found to be hydrogenated slightly faster than beta-ketoesters in EtOH in the presence of [RuCl(benzene)(S)-SunPhos]Cl at 70 degrees C with 20 bar of hydrogen. In THF these differences were so sharpened that beta-ketoamides were hydrogenated even faster than In EtOH while the esters were extremely slow. Based on these findings, a series of 3-oxoglutaric acid derived with ester and amide moieties on the two ends were hydrogenated to 3-hydroxyl products with high enantioselectivities.