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Poudel, Tej Narayan,Karanjit, Sangita,Khanal, Hari Datta,Tamargo, Ramuel John Inductivo,Lee, Yong Rok American Chemical Society 2018 ORGANIC LETTERS Vol.20 No.18
<P>An efficient synthesis of highly π-extended carbazoles is described via an unexpected domino [5 + 3 + 1] annulation approach. The Cu(I)-/base-promoted reactions of 2-nitrocinnamaldehydes with benzyl cyanides provide diverse benzo[<I>b</I>]carbazoles. The reaction is proposed to proceed via a sequential Michael addition/intramolecular addition of an enol into a nitro group, 6π- electrocyclization, and the final oxidative aromatization as supported by density functional theory calculations. Some of the synthesized carbazoles showed significant potential in fluorescence sensing of Cu<SUP>2+</SUP> ions.</P> [FIG OMISSION]</BR>
Juan Manual Racosta,Federico Di Guglielmo,Francisco Ricardo Klein,Patricia Mariana Riccio,Francisco Muñoz Giacomelli,María Eugenia González Toledo,Fátima Pagani Cassará,Agustina Tamargo,Matías Delfitt 대한뇌졸중학회 2014 Journal of stroke Vol.16 No.3
Background and Purpose Ascertaining stroke severity and predicting risk of in-hospital mortality is crucial to advise patients and families about medical decisions. We developed and tested the validity of a new stroke score, the 6S Score (Stroke Severity Score based on Six Signs and Symptoms), for quantifying ischemic stroke severity and predicting in-hospital mortality. Methods We prospectively assessed 210 consecutive acute ischemic stroke patients. The cohort was further divided into a derivation (n=120) and a validation (n=90) sample. From a total of 10 stroke signs and symptoms, we selected those with likelihood ratio’s P<0.005. We tested the validity of the score for predicting in-hospital mortality by using receiver operating characteristic curves. We used a scatterplot and the Spearman’s test to evaluate the correlation between the 6S Score and the National Institutes of Health Stroke Scale as a marker of stroke severity. We used principal component and exploratory factor analyses for assessing qualitative aspects of the 6S Score. Results The C statistic for in-hospital mortality was 0.82 for the 6S Score and 0.86 for the National Institutes of health Stroke Scale, respectively, with no significant differences between each other (P=0.79). The correlation between both scores was strong (Spearman’s rho 0.68, P<0.001). The factor analyses showed a good balance between left/right hemispheres and anterior/posterior circulations. Conclusions The 6S Score may constitute a tool for easily assessing stroke severity and predicting stroke mortality. Further research is needed for further assessing its external validity.