Phosphorus-sulfur FR additives and polymer systems containing same
申请人:Dow Global Technologies LLC
公开号:US08058332B2
公开(公告)日:2011-11-15
Phosphorus-sulfur compounds have flame retardant activity in organic polymer systems. The phosphorus-sulfur compounds can be represented by the structure:
wherein X is oxygen or sulfur, T is a covalent bond, oxygen, sulfur or nitrogen, provided that at least one of X and T is sulfur, each X′ is independently oxygen or sulfur, each m is independently zero or 1 when X′ is oxygen and zero, 1 or 2 when X′ is sulfur, n is at least 1 and preferably at least 2, each R is independently an unsubstituted or inertly substituted hydrocarbyl group or the R groups together form an unsubstituted or inertly substituted divalent organic group and A is an organic linking group.
PHOSPHORUS-SULFUR FR ADDITIVES AND POLYMER SYSTEMS CONTAINING SAME
申请人:Shankar Ravi B.
公开号:US20110034573A1
公开(公告)日:2011-02-10
Phosphorus-sulfur compounds have flame retardant activity in organic polymer systems. The phosphorus-sulfur compounds can be represented by the structure:
wherein X is oxygen or sulfur, T is a covalent bond, oxygen, sulfur or nitrogen, provided that at least one of X and T is sulfur, each X′ is independently oxygen or sulfur, each m is independently zero or 1 when X′ is oxygen and zero, 1 or 2 when X′ is sulfur, n is at least 1 and preferably at least 2, each R is independently an unsubstituted or inertly substituted hydrocarbyl group or the R groups together form an unsubstituted or inertly substituted divalent organic group and A is an organic linking group.
SYNTHESIS OF BIVALENT ORGANOPHOSPHORUS COMPOUNDS AS ACETYLCHOLINESTERASE INHIBITORS
作者:Guoquan Yang、Qianfei Zhao、Yonghong Li、Huizhu Yuan、Xiangdong Mei、Jun Ning
DOI:10.1080/00304940809458115
日期:2008.10
Glu199, Asp-276 and the hydrophobic residues lining the entrance gorge of AChE? through binding to both catalytic and peripheral sites of the enzyme, a new series of dual binding site AChE inhibitors have been designed and synthesized.1° The cluster effect, combined with information about the structure of acetylcholinesterase, led us to design and synthesize some bivalent organphosphorus compounds as
据报道,在生物系统中,多价结合提供了相应的单价相互作用无法实现的广泛益处。] Lee 等人描述了多价相互作用的经典例子之一,称为“集群效应” .2 一些多价药物分子的活性因它们的簇效应而显着增强。3.~ Pang 等人。报道了高效、选择性、低成本的双功能乙酰胆碱酯酶(AChE)抑制剂:由于簇效应已应用于药物设计,我们认为该理论假设可以作为发现新农用化学品的参考和指导。有机磷化合物作为经典的乙酰胆碱酯酶 (AChEi) 抑制剂。' 昆虫独特的毒理学为有机磷杀虫剂提供了安全机制,杀虫神经毒物的选择性归因于结合亚位点(乙酰胆碱酯酶)的结构差异?基于 ACE 活性位点峡谷的几何形状,在其两个末端有特定位点,Glu199、Asp-276 和 AChE 入口峡谷内衬的疏水残基?通过与酶的催化位点和外周位点结合,设计并合成了一系列新的双结合位点 AChE 抑制剂。 1° 集群效应结合乙酰胆碱酯酶的结构信