Synthesis and resolution of a Tolperisone metabolite
摘要:
The synthesis and resolution of a Tolperisone metabolite ((3'-hydroxy-4'-methylphenyl)-2-methyl-3-(piperidine-1-yl)-1-propane-1-one, M1) is described. Racemic M1 was subjected to resolution by the enantiomers of camphor-10-sulfonic acid. Absolute configuration was determined by X-ray diffraction analysis. Enantiomeric excesses were determined by H-1 NMR spectroscopy. (C) 2000 Elsevier Science Ltd. All rights reserved.
作者:Lu Cheng、Huihui Wang、Hengrui Cai、Jie Zhang、Xu Gong、Wei Han
DOI:10.1126/science.abj0731
日期:2021.10
selective catalytic hydroxylation of arenes remains an ongoing research challenge because of the relative inertness of aryl carbon-hydrogen bonds, the higher reactivity of the phenolic products leading to over-oxidized by-products, and the frequently insufficient regioselectivity. We report that iron coordinated by a bioinspired l-cystine–derived ligand can catalyze undirected arene carbon-hydrogen hydroxylation
The present invention relates to non-steroidal compounds useful in the treatment of inflammatory conditions and pharmaceutical compositions comprising them. A representative example of these compounds is
Acridinium compounds represented by the general formula (I) where A is an intervening group which does not have activity for binding with a specific binding substance, Z is a labelling active group which has activity for binding with a specific binding substance, R¹ is a halogen atom, an alkyl group or an aryl group; R², R³, R⁴ and R⁵ are each a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, a nitro group, a halogen atom or a carbonyl group, and Y is a counter ion. The acridinium compounds may form conjugates with specific binding substances. The acridinium compounds have high emission efficiency and stability and, hence, are useful as chemiluminescence labelling agents.