undergo ring closure and HF is eliminated. This photocyclodehydrofluorination (PCDHF) reaction is very useful to produce a wide range of selectively fluorinated polynucleararomatic hydrocarbons that possess a phenanthrene (or heterocyclic analogue of phenanthrene) substructure. These fluorinated products are of great interest in various aspects of the materials science.
A process for fluorination of aromatic compounds employing iodonium ylides and applicable to radiofluorination using 18F is described. Processes, intermediates, reagents and radiolabelled compounds are described.
Compounds of formula I or pharmaceutically acceptable salts thereof:
wherein R
1
, R
2
, R
3
, R
4
, n and A are as defined in the specification as well as salts and pharmaceutical compositions including the compounds are prepared. They are useful in therapy, in particular in the management of pain.
CONDENSED RING DERIVATIVE, AND PREPARATION METHOD, INTERMEDIATE, PHARMACEUTICAL COMPOSITION AND USE THEREOF
申请人:Shanghai Yingli Pharmaceutical Co. Ltd.
公开号:EP3275867A1
公开(公告)日:2018-01-31
Disclosed are a condensed ring derivative, and a preparation method, an intermediate, a pharmaceutical composition and a use thereof. The condensed ring derivative of the present invention has a significant inhibitive effect on URAT1, which can effectively alleviate or treat hyperuricemia and other related diseases.