通过哌嗪和高哌嗪与甲基丙烯酸酐(2a)和苯甲酰氯(2b)的酰化反应,以中等至高收率合成了新型不饱和哌嗪和高哌嗪衍生物(3a–h )。含哌嗪的二氢呋喃化合物(5a–l)是通过自由基加成和3a–h与1,3-二羰基化合物(如二甲酮(4a),乙酰乙酸乙酯(4b)和乙酰丙酮(4c))的环化作用而得到的,其中Mn(OAc)第一次3。而3b(1-甲基丙烯酰基哌嗪)与4a和4b的反应得到单二氢呋喃(5a和5c)旁边的双二氢呋喃(5b和5d),在介质中3b-e,3g,3h和3e与1,3-二羰基化合物的反应得到单二氢呋喃化合物(5f-1)高产。通过熔点分析,1 H NMR,13 C NMR,HRMS和FTIR方法确定所有新化合物的结构。通过Ellman方法评估了所有含哌嗪的二氢呋喃化合物对乙酰胆碱酯酶(AChE)的抑制活性,并给出了IC 50值。化合物5c,5d,5e,5i和5l表现出最高的抑制活性,IC 50值分别为5
通过哌嗪和高哌嗪与甲基丙烯酸酐(2a)和苯甲酰氯(2b)的酰化反应,以中等至高收率合成了新型不饱和哌嗪和高哌嗪衍生物(3a–h )。含哌嗪的二氢呋喃化合物(5a–l)是通过自由基加成和3a–h与1,3-二羰基化合物(如二甲酮(4a),乙酰乙酸乙酯(4b)和乙酰丙酮(4c))的环化作用而得到的,其中Mn(OAc)第一次3。而3b(1-甲基丙烯酰基哌嗪)与4a和4b的反应得到单二氢呋喃(5a和5c)旁边的双二氢呋喃(5b和5d),在介质中3b-e,3g,3h和3e与1,3-二羰基化合物的反应得到单二氢呋喃化合物(5f-1)高产。通过熔点分析,1 H NMR,13 C NMR,HRMS和FTIR方法确定所有新化合物的结构。通过Ellman方法评估了所有含哌嗪的二氢呋喃化合物对乙酰胆碱酯酶(AChE)的抑制活性,并给出了IC 50值。化合物5c,5d,5e,5i和5l表现出最高的抑制活性,IC 50值分别为5
This invention relates to a composite material that comprises a support member that has a plurality of pores extending through the support member and, located in the pores of the support member, and filling the pores of the support member, a macroporous cross-linked gel. The invention also relates to a process for preparing the composite material described above, and to its use. The composite material is suitable, for example, for separation of substances, for example by filtration or adsorption, including chromatography, for use as a support in synthesis or for use as a support for cell growth.
An aerogel-foam composite includes an open cell foam and an aerogel matrix polymer disposed in the open cell foam. The aerogel-foam composite has compression strength of about 15 megaPascals (MPa) or more. The open cell foam may be a polyurethane foam including a carbonate group (-OC(O)O-).
Vapor-deposited nanoscale ionic liquid gels as gate insulators for low-voltage high-speed thin film transistors
申请人:Massachusetts Institute of Technology
公开号:US10510971B2
公开(公告)日:2019-12-17
Described are materials and methods for fabricating low-voltage MHz ion-gel-gated thin film transistor devices using patternable defect-free ionic liquid gels. Ionic liquid gels made by the initiated chemical vapor deposition methods described herein exhibit a capacitance of about 1 μF cm−2 at about 1 MHz, and can be as thin as about 20 nm to about 400 nm.
Molecularly imprinted polymer for selectively trapping odorous molecules
申请人:L'ORÉAL
公开号:US10772823B2
公开(公告)日:2020-09-15
The invention relates to the use of molecularly imprinted polymer(s) or MIPs, of odorous molecule(s), as deodorant agent in particular for selectively trapping molecules that are the cause of human body odour. More particularly by using MIPs which may be obtained via polymerization, preferably via radical polymerization, of a mixture of: i) optionally one or more polymerization initiator(s); ii) one or more functional monomer(s); iii) one or more crosslinking agent(s); and iv) one or more porogenic solvent(s); it being understood that the polymerization a) or b) is performed in the presence v) of one or more “templates” of target molecule(s) responsible for human body odour. Another subject of the invention concerns a process for preparing MIPs as defined previously, MIPs obtained via this process, and a cosmetic composition comprising at least one MIP as defined previously. Unexpectedly, it appears that the MIPs make it possible to specifically trap precursors of odorous molecules and odorous molecules that may be used in cosmetic formulations, especially those that are the cause of the unpleasant odour of sweat.
Molecularly imprinted polymers and their use as antidandruff agents
申请人:L'ORÉAL
公开号:US10772822B2
公开(公告)日:2020-09-15
The invention relates to a molecularly imprinted polymer obtained by polymerization of a mixture comprising a basic ethylene monomer having an amine group, a crosslinking agent comprising at least 2 polymerizable ethylene unsaturations, a porogenic solvent and a C14-C20 fatty acid. A cosmetic composition comprising such a polymer. A cosmetic process to prevent and/or treat dandruff of the scalp using such a polymer.