Extended N6 substitution of rigid C2-arylethynyl nucleosides for exploring the role of extracellular loops in ligand recognition at the A3 adenosine receptor
摘要:
2-Arylethynyl-(N)-methanocarba adenosine 5'-methyluronamides containing rigid N-6-(trans-2-phenylcyclopropyl) and 2-phenylethynyl groups were synthesized as agonists for probing structural features of the A(3) adenosine receptor (AR). Radioligand binding confirmed A(3)AR selectivity and N-6-1S,2R stereoselectivity for one diastereomeric pair. The environment of receptor-bound, conformationally constrained N-6 groups was explored by docking to an A(3)AR homology model, indicating specific hydrophobic interactions with the second extracellular loop able to modulate the affinity profile. 2-Pyridylethynyl derivative 18 was administered orally in mice to reduce chronic neuropathic pain in the chronic constriction injury model. Published by Elsevier Ltd.
NOVEL PROCESSES FOR THE PREPARATION OF PHENYLCYCLOPROPYLAMINE DERIVATIVES AND USE THEREOF FOR PREPARING TICAGRELOR
申请人:Khile Anil Shahaji
公开号:US20130165696A1
公开(公告)日:2013-06-27
Provided herein are novel processes for the preparation of phenylcyclopropylamine derivatives, which are useful intermediates in the preparation of triazolo[4,5-d]pyrimidine compounds. Provided particularly herein are novel, commercially viable and industrially advantageous processes for the preparation of a substantially pure ticagrelor intermediate, trans-(1R,2S)-2-(3,4-difluorophenyl)-cyclopropylamine. Provided further herein are novel acid addition salts of trans-(1R,2S)-2-(3,4-difluorophenyl)-cyclopropylamine, and process for their preparation. The intermediate and its acid addition salts are useful for preparing ticagrelor, or a pharmaceutically acceptable salt thereof, in high yield and purity.
Synthesis of 2-(3,4-difluorophenyl)cyclopropanamine derivatives and salts
申请人:LEK Pharmaceuticals d.d.
公开号:EP2644590A1
公开(公告)日:2013-10-02
The present invention relates to the field of organic synthesis and describes the synthesis of specific intermediates suitable for the preparation of triazolopyrimidine compounds such as ticagrelor.
这项发明涉及有机合成领域,描述了合成特定中间体的方法,适用于制备三唑吡咯啉类化合物,如替卡格雷。
Synthesis of 2-(3,4-difluorophenyl)cyclopropanecarboxylic acid
申请人:LEK Pharmaceuticals d.d.
公开号:EP2628721A1
公开(公告)日:2013-08-21
The present invention relates to the field of organic synthesis and describes the synthesis of specific intermediates suitable for the preparation of triazolopyrimidine compounds such as ticagrelor.
[EN] NOVEL PROCESS FOR PREPARING PHENYLCYCLOPROPYLAMINE DERIVATIVES USING NOVEL INTERMEDIATES<br/>[FR] NOUVEAU PROCÉDÉ DE PRÉPARATION DE DÉRIVÉS DE PHÉNYLCYCLOPROPYLAMINE PAR UTILISATION DE NOUVEAUX INTERMÉDIAIRES