DICARBOXYLATE GEMINI SURFACTANT THAT FORMS A LYOTROPIC LIQUID CRYSTAL
申请人:Mahanthappa Mahesh Kalyana
公开号:US20130306907A1
公开(公告)日:2013-11-21
Aliphatic dicarboxylate Gemini surfactants and lyotropic liquid crystal compositions formed thereby are disclosed. The Gemini surfactants are capable of robustly forming Q phase morphologies over broad ranges of temperature and concentration.
Platelet Aggregation Inhibiting and Anticoagulant Effects of Oligoamines, Part 33 From Tetradecane- to Octacosanediamines
作者:Klaus Rehse、Rafaela Nolte-Driller
DOI:10.1002/ardp.19963290404
日期:——
them inhibited the aggregation of human blood platelets in concentrations between 3–10 μmol/L halfmaximally (Born test, inducer collagen). With increasing m a decreasing n is necessary to achieve the optimum activity. In the most active compounds (7b, 7e, 7p) it is found that m + n = 9. When the nitrogen functions are hydroxyalkylated secondary amines with similar antiplatelet effects are obtained. The
根据本系列前面部分的结构-活性关系设计并合成了 20 种烷二胺。它们的一般结构是 CH3-(CH2)n-CHNH2-(CH2)m-CHNH2-(CH2)n-CH3,(n = 2-10;m = 3-6)。其中 12 种在 3-10 μmol/L 的浓度范围内抑制人血小板的聚集,最大值为一半(Born test,诱导剂胶原蛋白)。随着 ma 的增加,n 的减少是达到最佳活性所必需的。在最活跃的化合物 (7b, 7e, 7p) 中,发现 m + n = 9。当氮官能团为羟烷基化仲胺时,可获得具有类似抗血小板作用的仲胺。氨基转化为sydnonimines伴随着活性的丧失。7f和7m的双乙氧基羰基衍生物(8f, 8m)口服后对大鼠表现出抗血栓形成作用。
US8834743B2
申请人:——
公开号:US8834743B2
公开(公告)日:2014-09-16
Discovery of a tetracontinuous, aqueous lyotropic network phase with unusual 3D-hexagonal symmetry
作者:Gregory P. Sorenson、Adam K. Schmitt、Mahesh K. Mahanthappa
DOI:10.1039/c4sm01226g
日期:——
An aliphatic gemini dicarboxylate surfactant is shown to form a new 3D-hexagonal lyotropic liquid crystalline phase with P63/mcm symmetry.
一种脂肪族双羧酸盐表面活性剂被证明能形成具有P63/mcm对称性的新的3D-六角畴液晶相。
Antiaggregatorische und anticoagulante Eigenschaften von Oligoaminen, 11. Mitt.: Oligoamine mit zwei primären Aminogruppen
作者:Klaus Rehse、Bettina Rose、Susanne Leißring
DOI:10.1002/ardp.19903230210
日期:——
Es wurden zehn verzweigte diprimäre α,ω‐Alkandiamine dargestellt. Die durch Collagen induzierte Thrombocytenaggregation wurde durch sieben von ihnen in Konzentrationen von 5‐11 μmol/L halbmaximal gehemmt. Die einstufige Thromboplastinzeit wurde in Konzentration bei zu 400 μmol/L nur unwesentlich (Δt <7s) beeinflußt.