Exploring Left-Hand-Side substitutions in the benzoxazinone series of 4-amino-piperidine bacterial type IIa topoisomerase inhibitors
摘要:
An SAR survey at the C-6 benzoxazinone position of a novel scaffold which inhibits bacterial type IIa topoisomerase demonstrates that a range of small electron donating groups (EDG) and electron withdrawing groups (EWG) are tolerated for antibacterial activity. Cyano was identified as a preferred substituent that affords good antibacterial potency while minimizing hERG cardiac channel activity. (C) 2011 Elsevier Ltd. All rights reserved.
COMPOSITIONS, SYNTHESIS, AND METHODS OF UTILIZING ARYLPIPERAZINE DERIVATIVES
申请人:Bhat Laxminarayan
公开号:US20100216783A1
公开(公告)日:2010-08-26
The present invention provides arylpiperazine derivatives which can be advantageously used for treating schizophrenia and related psychoses such as acute manic, bipolar disorder, autistic disorder and depression.
New Herbicide Models from Benzoxazinones: Aromatic Ring Functionalization Effects
作者:Francisco A. Macías、João M. De Siqueira、Nuria Chinchilla、David Marín、Rosa M. Varela、José M. G. Molinillo
DOI:10.1021/jf062709g
日期:2006.12.1
electronic molecular parameters, the resulting molecular volume (V) and dipole moment (mu) being the most influential ones. Halogenations at C-6 and fluorination at C-7 were the most successful modifications. Compounds 6-fluoro-(2H)-1,4-benzoxazin-3(4H)-one (6F-D-DIBOA), 7-fluoro-(2H)-1,4-benzoxazin-3(4H)-one (7F-D-DIBOA), and 6-chloro-(2H)-1,4-benzoxazin-3(4H)-one (6Cl-D-DIBOA) had the highest phytotoxic
Compositions, Synthesis, And Methods Of Using Piperazine Based Antipsychotic Agents
申请人:Bhat Laxminarayan
公开号:US20090298819A1
公开(公告)日:2009-12-03
The present invention provides novel piperazine derivatives which can be advantageously used for treating schizophrenia and related psychoses such as acute manic, bipolar disorder, autistic disorder and depression.
Selective nitration versus oxidative dealkylation of hydroquinone ethers with nitrogen dioxide
作者:R. Rathore、E. Bosch、J.K. Kochi
DOI:10.1016/s0040-4020(01)81329-6
日期:1994.1
Various alkyl-substituted p-dialkoxybenzenes (ArH) react readily with nitrogendioxide (NO2) in dichloromethane solution via either nitration (ArNO2) or oxidative dealkylation to quinones (Q). Spectral transients indicate that these coupled processes from the dialkoxybenzene radical cation (ArH+·) formed as the common reactive intermediate from electron-transfer in the disproprtionated precursor [ArH
4-Acetoxy-2H-1, 4-benzoxazin-3 (4H)-one (3) undergoes rearrangement or nucleophilic attack to give 2-, 5-, 6-, and 7-substituted derivatives of the benzoxazinone according to the reaction conditions. The formation of 5- and 7-substituted products was interpreted in terms of nucleophilic attack on the cation (14) formed by the heterolysis of the N-O bond of 3. For the formation of 6-substituted derivatives of the benzoxazinone, participation of the oxygen atom at position 1 of the benzoxazinone (that is, formation of an oxonium ion, 18) is important. A possible mechanism for the formation of 2-substituted products also involves an oxonium ion (19). These novel aspects of acetoxybenzoxazinone chemistry may contribute to an understanding of the mechanism of the actions of the prohibitins in cereal plants.