Synthesis of 1,2,3-triazole linked galactopyranosides and evaluation of cholera toxin inhibition
作者:David J. Leaver、Raymond M. Dawson、Jonathan M. White、Anastasios Polyzos、Andrew B. Hughes
DOI:10.1039/c1ob06317k
日期:——
We report the synthesis of a series of bivalent 1,2,3-triazole linked galactopyranosides as potential inhibitors of cholera toxin (CT). The inhibitory activity of the bivalent series was examined (ELISA) and the series showed low inhibitory activity (millimolar IC50s). Conversely, the monomeric galactotriazole analogues were strong inhibitors of cholera toxin (IC50 = 71–75 μM).
The present invention relates to a compound of formula (I) wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 and G are as defined herein; and wherein the compound of formula (I) is optionally present as an agrochemically acceptable salt thereof. These compounds are suitable for use as herbicides. The invention therefore also relates to a method of controlling weeds, especially grassy monocotyledonous weeds, in crops of useful plants, comprising applying a compound of formula (I), or a herbicidal composition comprising such a compound, to the plants or to the locus thereof.
[EN] N-ACYLPIPERIDINE ETHER TROPOMYOSIN-RELATED KINASE INHIBITORS<br/>[FR] INHIBITEURS DE KINASE APPARENTÉS À LA N-ACYLPIPÉRIDINE ÉTHER TROPOMYOSINE
申请人:PFIZER LTD
公开号:WO2015092610A1
公开(公告)日:2015-06-25
The present invention relates to compounds of Formula (I) described herein and their pharmaceutically acceptable salts, and their use in medicine, in particular as Trk antagonists.
A Highly Efficient and Recyclable Pd(Pph<sub>3</sub>)<sub>4</sub>/Peg-400 System for Stille Cross-Coupling Reactions of Organostannanes with Aryl Bromides
作者:Xue Huang、Fang Yao、Ting Wei、Mingzhong Cai
DOI:10.3184/174751917x15045169836226
日期:2017.9
Pd(PPh3)4 in PEG-400 is shown to be a highly efficient catalyst for the Stille cross-coupling reactions of various organotin compounds with arylbromides. The reaction could be conducted at 80 °C using NaOAc as base, yielding a variety of biaryls, alkynes and alkenes in good to excellent yields. The isolation of the products was readily performed by extraction with petroleum ether and the Pd(PPh3)4/PEG-400
Synthesis of optically active N-allyl amino compounds with defined trisubstituted double bonds
作者:Uwe Bösche、Udo Nubbemeyer
DOI:10.1016/s0040-4020(99)00345-2
日期:1999.5
Optically active acyclic N-allylamino compounds with defined configurated trisubstituteddoublebonds were generated via a three step sequence. The first crucial step was a two-carbon chain elongation of chiral α-aminoacid esters succeeding in a Claisen ester condensation with acetic acid ester enolates. The so formed β-ketoesters were subjected to a one pot procedure of an enol trifluoromethanesulfonate