of our chemical library to discover new molecules exhibiting in vitro activity against the invasion of host cells by Eimeria tenella revealed a lead compound with an IC50 of 15μM. Structure-activity relationship studies were conducted with 34 newly synthesized compounds to identify more active molecules and enhance in vitro activity against the parasite. Four compounds were more effective in inhibiting
NOVEL PYRAZOLE-3-CARBOXAMIDE DERIVATIVE HAVING 5-HT2B RECEPTOR ANTAGONIST ACTIVITY
申请人:Yamagishi Tatsuya
公开号:US20110275628A1
公开(公告)日:2011-11-10
Disclosed is a compound represented by general formula (I) or a pharmaceutically acceptable salt thereof, which is useful as a selective antagonist of a 5-HT
2B
receptor. The compound and salt are useful for treatment or prevention of various diseases and conditions associated with a 5-HT
2B
receptor.
Synthesis of 5-, 6- and 7-azaindoles via palladium-catalyzed heteroannulation of internal alkynes
作者:Feroze Ujjainwalla、Daniel Warner
DOI:10.1016/s0040-4039(98)01069-7
日期:1998.7
The palladium-catalyzed heteroannulation of internal alkynes using ortho-aminoiodopyridine derivatives is described. This experimentally simple procedure, which employs a Pd(dppf)Cl2/LiCl/Na2CO3 reagent system, allows rapid and reliable access to a structurally diverse range of 5-, 6- and 7-azaindoles.
描述了使用邻氨基碘吡啶吡啶衍生物的钯催化的内部炔的杂环化。该实验简单的过程采用Pd(dppf)Cl 2 / LiCl / Na 2 CO 3试剂系统,可以快速,可靠地获得结构不同的5-,6-和7-氮杂吲哚。
InBr<sub>3</sub>-Promoted Divergent Approach to Polysubstituted Indoles and Quinolines from 2-Ethynylanilines: Switch from an Intramolecular Cyclization to an Intermolecular Dimerization by a Type of Terminal Substituent Group
Use of a 2-ethynylaniline having an alkyl or aryl group on the terminal alkyne selectively produced a variety of polyfunctionalized indole derivatives in moderate to excellent yields via indium-catalyzed intramolecular cyclization of the corresponding alkynylaniline. In contrast, employment of a substrate with a trimethylsilyl group or with no substituent group on the terminal triple bond, exclusively
2-Substituted quinolines and related derivatives can be rapidly prepared from (hetero)aryl halides and propargyl alcohols in the sense of a one-pot microwave-assisted coupling-isomerizationreaction (MACIR). First biological tests against trypanosomes and protozoans have revealed antiparasitic activity in the lower micromolar range.