In this study, we reported the synthesis and biological characterization of a novel series of furan-carboxamide derivatives that were potent inhibitors of the influenza A H5N1 virus. The systematic structure–activity relationship (SAR) studies demonstrated that the 2,5-dimethyl-substituted heterocyclic moiety (furan or thiophene) had significant influence on the anti-influenza activity. In particular
Enantioselective Synthesis of <i>N</i>
,<i>S</i>
-Acetals by an Oxidative Pummerer-Type Transformation using Phase-Transfer Catalysis
作者:Souvagya Biswas、Koji Kubota、Manuel Orlandi、Mathias Turberg、Dillon H. Miles、Matthew S. Sigman、F. Dean Toste
DOI:10.1002/anie.201711277
日期:2018.1.8
Deuterium‐labelling experiments were performed to identify the stereodiscrimination step of this process. Further analysis of the reaction transition states, by means of multidimensional correlations and DFT calculations, highlight the existence of a set of weak noncovalent interactions between the catalyst and substrate that govern the enantioselectivity of the reaction.
IMAGING TUBERCULOSIS WITH PYRAZINAMIDE CONTRAST AGENTS
申请人:Kuniyil Kulangara Vijaya Raj
公开号:US20130149249A1
公开(公告)日:2013-06-13
The present invention provides novel in vivo imaging agents useful for detecting the presence of mycobacteria using in vivo imaging methods. Also provided by the present invention is a precursor compound useful in the synthesis of the in vivo imaging agents of the invention, and a method to obtain the in vivo imaging agent of the invention using said precursor compound. Methods of in vivo imaging and diagnosis in which the in vivo imaging agent of the invention finds use are also provided.
Imidazolylalkylguanidinderivate, Verfahren zu ihrer Herstellung und diese Verbindungen enthaltende Arzneimittel
申请人:HEUMANN PHARMA GMBH & CO
公开号:EP0199845A1
公开(公告)日:1986-11-05
Es werden neue Imidazolylalkylguanidinderivate beschrieben, die aufgrund ihrer agonistischen Wirkung auf Histamin-H2-Rezeptoren sowie zum Teil wegen ihrer zusätzlichen H1-antagonistischen Rezeptoraktivität bei Erkrankungen des Herzens, bei bestimmten Formen der Hypertonie sowie bei arteriellen Verschlußkrankheiten eingesetzt werden können.
Es handelt sich um Imidazolylalkylguanidinderivate der allgemeinen Formel I:
本文描述了新的咪唑烷基胍衍生物,由于其对组胺 H2 受体的激动作用,以及部分由于其额外的 H1 拮抗受体活性,这些衍生物可用于治疗心脏病、某些形式的高血压和动脉闭塞性疾病。 这些是通式 I 的咪唑烷基胍衍生物:
HIGH PERFORMANCE LIQUID CHROMATOGRAPHY METHOD FOR ANALYZING IMAGING AGENT, PRECURSOR OF IMAGING AGENT, OR INTERMEDIATE OF IMAGING AGENT
申请人:INSTITUTE OF NUCLEAR ENERGY RESEARCH, ATOMIC ENERGY COUNCIL, EXECUTIVE YUAN, R.O.C.
公开号:US20170115259A1
公开(公告)日:2017-04-27
A high performance liquid chromatography method of an imaging agent, a precursor of the imaging agent, or an intermediate of the imaging agent is revealed. Instead of using the same eluent, a first eluent with a lower proportion of methanol is used to elute target compounds. Then a second eluent having a higher ratio of methanol ranging from 95-99% is used to elute for at least 15 minutes. Next use the first eluent again to elute for at least 60 minutes. Thus the target compounds are retained stably in the column and retention time of respective reproductive characteristic peak is obtained.