Studying competitive lithiations at alpha-, ortho-, and benzylic positions in various N-protected aniline derivatives
作者:Martin Schmid、Birgit Waldner、Michael Schnürch、Marko D. Mihovilovic、Peter Stanetty
DOI:10.1016/j.tet.2011.02.056
日期:2011.4
The directing effects of the t-BuOCONH– (NHBoc) and the t-BuCONH– (NH–pivaloyl) groups have been investigated on a series of differently substituted anilines. Depending on the nature of the directing group and the substrate, lithiation either occurred in the ortho-, benzylic-, or alpha-position. In general, it was observed that ortho-lithiation is the least facile process and alpha-lithiation slightly
PYRAZOLO[1,5-A]PYRIMIDINES FOR ANTIVIRAL TREATMENT
申请人:Babaoglu Kerim
公开号:US20120003215A1
公开(公告)日:2012-01-05
The invention provides compounds of Formula I or Formula II:
or a pharmaceutically acceptable salt or ester, thereof, as described herein. The compounds and compositions thereof are useful for treating Pneumovirinae virus infections. The compounds, compositions, and methods provided are particularly useful for the treatment of Human respiratory syncytial virus infections.
The scope and limitations of deuteration mediated by Crabtree's catalyst
作者:George J Ellames、Jennifer S Gibson、John M Herbert、Alan H McNeill
DOI:10.1016/s0040-4020(01)00945-0
日期:2001.11
Exchange of protons for deuterons mediated by Crabtree's catalyst, 1, is directed efficiently by a functional group containing an sp(2)-hybridised nitrogen or oxygen atom; more electron-rich substrates are, in general, deuterated more efficiently. The electronic effects of substituents in the arene ring are critical only where the directing group is poor, in which case exchange is generally promoted by electron donating substituents, but the exchange is impeded by bulky meta-substituents. (C) 2001 Elsevier Science Ltd. All rights reserved.
Modulation of Bacterial Quorum Sensing with Synthetic Ligands
申请人:Blackwell Helen E.
公开号:US20080312319A1
公开(公告)日:2008-12-18
The present invention provides compounds and methods for modulation of the quorum sensing of bacteria. In an embodiment, the compounds of the present invention are able to act as replacements for naturally occurring bacterial quorum sensing ligands in a ligand-protein binding system; that is, they imitate the effect of natural ligands and produce an agonistic effect. In another embodiment, the compounds of the present invention are able to act in a manner which disturbs or inhibits the naturally occurring ligand-protein binding system in quorum sensing bacteria; that is, they produce an antagonistic effect. The compounds of the present invention comprise N-acylated-homoserine lactones (AHLs) comprised of a wide range of acyl groups.
Modulation of Bacterial Quorum Sensing With Synthetic Ligands
申请人:Blackwell Helen E.
公开号:US20110212860A1
公开(公告)日:2011-09-01
The present invention provides compounds and methods for modulation of the quorum sensing of bacteria. In an embodiment, the compounds of the present invention are able to act as replacements for naturally occurring bacterial quorum sensing ligands in a ligand-protein binding system; that is, they imitate the effect of natural ligands and produce an agonistic effect. In another embodiment, the compounds of the present invention are able to act in a manner which disturbs or inhibits the naturally occurring ligand-protein binding system in quorum sensing bacteria; that is, they produce an antagonistic effect. The compounds of the present invention comprise N-acylated-homoserine lactones (AHLs) comprised of a wide range of acyl groups.