Bis basic substituted diaminobenzobisthiazoles as potential antiarthritic agents
作者:Ernest Cullen、Reinhold Becker、Kurt Freter、Thelma LeClerq、Genus Possanza、Hin Chor Wong
DOI:10.1021/jm00080a022
日期:1992.1
A series of benzobisthiazoles were screened for antiinflammatory activity in the carrageenan paw edema and adjuvant arthritis tests. Compound 26, 2,6-bis(N,N-diethylamino)benzo[1,2-d:5,4-d']bisthiazole, was found to inhibit the swelling of the uninjected paw in the prophylactic adjuvant arthritis model with an ED50 of 2.3 mg/kg orally. As with most compounds of this series, 26 was inactive in acute
A rational synthetic strategy is developed to provide compact and simple terpyridine (terpy) mesogens that show liquid-crystallinity both as pure compounds and in organic solution (amphotropic compound). The use of a central 4-methyl-3,5-diacylaminophenyl platform equipped with two lateral aromatic rings, each bearing three appended aliphatic chains, allows connection of a 2,2':6',2''-terpyridine fragment
Heating the complexes bearing long paraffin chains (n = 12 and 16) in the dried state leads to a self-organization into a columnar liquid-crystalline phase in which the columns are arranged along a 2D oblique symmetry as deduced from powder XRD experiments. In this case, the complexes with the appended counteranions self-assemble in a specific way to form columns. A striking observation is that the intramolecular
一个新的高度官能化的分子家族由一个中心 4-甲基-3,5-二酰基氨基苯平台组成,该平台通过两个侧向芳环与甲基紧密相连,每个侧向芳环都配备了两个长烷氧基链。酰胺系链和通过酯偶极连接的螯合菲咯啉片段的存在形成了一类新的胶凝剂和介晶材料。这些化合物中的一些具有通过在烃溶剂中的非共价相互作用形成大分子状聚集体的趋势,并被发现表现出热致立方中间相。根据甲氧基配体的 X 射线分子结构,证明了由分子间氢键以及苯基亚基的 pi-pi 堆积维持的无限网络。FT-IR 研究证实,有机凝胶中的聚集和中间相中的微偏析的共同驱动力是出现在稀释溶液中不会持续存在的紧密分子间 H 键网络。当配体被铜 (I) 阳离子联锁时,这种情况就会发生变化。对于甲氧基情况,通过单晶的 X 射线衍射证实的强分子内 H 键提供了非常稳定的复合物,但会抑制溶剂的凝胶化。在干燥状态下加热带有长石蜡链 (n = 12 和 16) 的复合物会导致自组织成柱状液晶相,其中柱子沿
The Convenient Synthesis of Hydrogen-Bonded Ureidopyrimidinones
作者:Henk M. Keizer、Rint P. Sijbesma、E. W. Meijer
DOI:10.1002/ejoc.200300752
日期:2004.6
Blocked isocytosine isocyanates are conveniently obtained by the reaction of 1,1′-carbonyldiimidazole (CDI) with isocytosines. The resulting precursors for quadruple hydrogen-bonded structures can be isolated and stored for further use. Reaction with either aliphatic or aromatic amines gives the corresponding mono-, bi-, or trifunctional ureidopyrimidinone derivatives in good to excellent isolated
Gas separation membrane, gas separation module, gas separation device, and gas separation method
申请人:FUJIFILM Corporation
公开号:US10040035B2
公开(公告)日:2018-08-07
Provided are a gas separation membrane which includes a gas separation layer formed to include a polyimide compound and in which the polyimide compound includes a repeating unit represented by the following Formula (I), a gas separation module, a gas separation device, and a gas separation method using the same.
In Formula (I), R represents a group having a specific structure. R3 represents a specific substituent group. A1 to A3 represent a hydrogen atom or a specific substituent group, but all of A1 to A3 do not represent a hydrogen atom at the same time.
In this case, at least one of R3, A1, A2, and A3 represents a specific polar group.