(1E,4E)-hexa-1,4-dien-3-one 在
poly(3,4-ethylenedioxythiophene) by electrochemical oxidation of 3,4-ethylenedioxythiophene 作用下,
以
甲苯 为溶剂,
以43%的产率得到3-甲基-2-环戊烯-1-酮
参考文献:
名称:
Polymer-Mediated Reactions. A Nazarov-Like Cyclization
摘要:
The polymer PEDOT+ mediates a Nazarov-like cyclization of dienones, in an heterogeneous system and in hydrocarbon solvents. The polymer-mediated reactions show clear differences in product formation when compared to the same reaction with tosic acid, or when compared to reports in the literature. Comparable or improved yields are observed, as well as the ability to give a Nazarov product in cases where treatment with acid fails to give cyclization, or leads to an undesirable rearrangement. In addition, the ability to recycle the polymer makes this a potentially useful protocol for an important organic chemical reaction.
[EN] (PIPERIDINYLOXY)PHENYL, (PIPERIDINYLOXY)PYRIDINYL, (PIPERIDINYLSULFANYL)PHENYL AND (PIPERIDINYLSULFANYL)PYRIDINYL COMPOUNDS AS 5-HT1F AGONISTS [FR] COMPOSES (PIPERIDINYLOXY)PHENYLE, (PIPERIDINYLOXY)PYRIDINYLE, (PIPERIDINYLSULFANYL)PHENYLE ET (PIPERIDINYLSULFANYL)PYRIDINYLE UTILISES COMME AGONISTES DES RECEPTEURS 5-HT1F
BENZOFURO[3,2-c] PYRIDINES AND RELATED ANALOGS AS SEROTONIN SUB-TYPE 6 (5-HT6) MODULATORS FOR THE TREATMENT OF OBESITY, METABOLIC SYNDROME, COGNITION AND SCHIZOPHRENIA
申请人:GUZZO Peter R.
公开号:US20120184531A1
公开(公告)日:2012-07-19
The present invention relates to benzofuro[3,2-c]pyridine and azepine analogs as serotonin sub-type 6 (5-HT
6
) modulators, pharmaceutical compositions including these compounds, methods of preparation, and use thereof. These compounds are useful in the treatment of central nervous system disorders including obesity, metabolic syndrome, cognition, schizophrenia, attention deficit hyperactivity disorder, bipolar disorder, rare and orphan diseases, and sleep disorders. The subject compounds have the structure of formula (I)
with the substituents being described herein.
The present invention relates to pyrazolo pyrimidine derivatives, to methods of preparing these, to combinations and pharmaceutical composition comprising these, and to their use in the treatment of diseases and disorders which may for example involve autoimmune diseases, angiogenesis, pain, and/or inflammatory diseases.
Construction of perhydro indol-2-ones by a methoxide catalyzed deacetylation–Michael–aldol cascade
作者:John W. Ward、Karen Dodd、Caroline L. Rigby、Chris De Savi、Darren J. Dixon
DOI:10.1039/b924637a
日期:——
An efficient, stereoselective Michaelâaldol cascade for the one-pot construction of the perhydro indol-2-one bicyclic ring system using an acetate protected doubly-activated pyrrole-2-one pro-nucleophile and α,β-unsaturated carbonyl compounds has been developed. Initiated by a methoxide deacetylation in methanol at room temperature, the cascade is easy to perform, stereoselective, efficient and broad in scope to this synthetically relevant structure.
Benzofuro[3,2-c] pyridines and related analogs as serotonin sub-type 6 (5-HT6) modulators for the treatment of obesity, metabolic syndrome, cognition and schizophrenia
申请人:Guzzo Peter R.
公开号:US09067949B2
公开(公告)日:2015-06-30
The present invention relates to benzofuro[3,2-c]pyridine and azepine analogs as serotonin sub-type 6 (5-HT6) modulators, pharmaceutical compositions including these compounds, methods of preparation, and use thereof. These compounds are useful in the treatment of central nervous system disorders including obesity, metabolic syndrome, cognition, schizophrenia, attention deficit hyperactivity disorder, bipolar disorder, rare and orphan diseases, and sleep disorders. The subject compounds have the structure of formula (I)
with the substituents being described herein.
Methyl-substitution of an iminohydantoin spiropiperidine β-secretase (BACE-1) inhibitor has a profound effect on its potency
作者:Melissa Egbertson、Georgia B. McGaughey、Steven M. Pitzenberger、Shaun R. Stauffer、Craig A. Coburn、Shawn J. Stachel、Wenjin Yang、James C. Barrow、Lou Anne Neilson、Melody McWherter、Debra Perlow、Bruce Fahr、Sanjeev Munshi、Timothy J. Allison、Katharine Holloway、Harold G. Selnick、ZhiQiang Yang、John Swestock、Adam J. Simon、Sethu Sankaranarayanan、Dennis Colussi、Katherine Tugusheva、Ming-Tain Lai、Beth Pietrak、Shari Haugabook、Lixia Jin、I.-W. Chen、Marie Holahan、Maria Stranieri-Michener、Jacquelynn J. Cook、Joseph Vacca、Samuel L. Graham
DOI:10.1016/j.bmcl.2015.06.082
日期:2015.11
The IC50 of a beta-secretase (BACE-1) lead compound was improved similar to 200-fold from 11 mu M to 55 nM through the addition of a single methyl group. Computational chemistry, small molecule NMR, and protein crystallography capabilities were used to compare the solution conformation of the ligand under varying pH conditions to its conformation when bound in the active site. Chemical modification then explored available binding pockets adjacent to the ligand. A strategically placed methyl group not only maintained the required pKa of the piperidine nitrogen and filled a small hydrophobic pocket, but more importantly, stabilized the conformation best suited for optimized binding to the receptor. (C) 2015 Elsevier Ltd. All rights reserved.