[EN] N-LINKED HYDROXAMIC ACID DERIVATIVES USEFUL AS ANTIBACTERIAL AGENTS<br/>[FR] DÉRIVÉS D'ACIDE HYDROXAMIQUE À LIAISON N, UTILES COMME AGENTS ANTIBACTÉRIENS
申请人:PFIZER
公开号:WO2011073845A1
公开(公告)日:2011-06-23
The present invention is directed to a new class of hydroxamic acid derivatives, their use as LpxC inhibitors, and more specifically their use to treat bacterial infections. Formula (I).
Compounds having the formula
are useful for inhibiting protein tyrosine kinases. The present invention also discloses methods of making the compounds, compositions containing the compounds, and methods of treatment using the compounds.
Transition-Metal-Free Redox-Neutral One-Pot C3-Alkenylation of Indoles Using Aldehydes
作者:Samrat Sahu、Ankush Banerjee、Modhu Sudan Maji
DOI:10.1021/acs.orglett.6b03612
日期:2017.2.3
indoles in a domino fashion. A transition-metal-free C3-alkenylation of indole is reported by using sequential Brønstedacid/base catalysis. Several β-substituted 3-alkenylindoles and conjugated 1,3-dienes are synthesized by direct coupling of indole and readily available aliphatic aldehydes. Excellent scalability and recycling of benzenesulfinic acid for successive alkenylation reactions up to five times
An efficient, one-pot reductive alkylation of indoles with N-protected aminoethyl acetals in the presence of TES/TFA is reported. It represents the first general method for the direct synthesis of tryptamine derivatives from indoles and nitrogen-functionalized acetals. This convergent and versatile approach employs safe and inexpensive reagents, proceeds under mild conditions, and tolerates several
Compounds of formula (I)
wherein n is 0, 1, or 2; A is N or N
+
—O—; X is O, S, —NH—, and —N-alkyl-; Ar
1
is a 6-membered aromatic ring; and Ar
2
is a fused bicycloheterocycle. The compounds are useful in treating conditions or disorders prevented by or ameliorated by α7 nAChR ligands. Also disclosed are pharmaceutical compositions having compounds of formula (I) and methods for using such compounds and compositions.