We describe the synthesis and pharmacological properties of two new series of aliphatic and alicyclic beta-adrenergic blockers, most of them containing a cyclopropyl ring. They belong either to 2-hydroxy-3-(tert-butylamino)propyl ether A or 2-hydroxy-3-tert-(butylamino)propyl ketoxime ether B derivatives. The O-[2-hydroxy-3-(tert-butylamino)propyl] dicyclopropyl ketoxime 5 exhibited a beta-adrenergic
Epoxides as Dual-Functionalized Alkylating Reagents in Catellani Reactions for the Assembly of Heterocycles
作者:Hong-Gang Cheng、Qianghui Zhou、Chenggui Wu
DOI:10.1055/s-0039-1690779
日期:2020.6
acid that permits the use of epoxides as dual-functionalized alkylating reagents in Catellani-type reactions for the assembly of heterocycles. Salient features of this research include readily available substrates, use of the potassium salt of 5-norbornene-2-carboxylic acid as a catalytic mediator as well as a base, and excellent regioselectivity for the cleavage of epoxides. This mild, chemoselective
POLY(BETA-AMINO ALCOHOLS), THEIR PREPARATION, AND USES THEREOF
申请人:Ma Minglin
公开号:US20130302401A1
公开(公告)日:2013-11-14
A new class of poly(beta-amino alcohols) (PBAAs) has been prepared using combinatorial polymerization. The inventive PBAAs may be used in biotechnology and biomedical applications as coatings (such as coatings of films or multilayer films for medical devices or implants), additives, materials, excipients, non-biofouling agents, micropatterning agents, and cellular encapsulation agents. When used as surface coatings, these PBAAs elicited different levels of inflammation, both in vitro and in vivo, depending on their chemical structures. The large chemical diversity of this class of materials allowed us to identify polymer coatings that inhibit macrophage activation in vitro. Furthermore, these coatings reduce the recruitment of inflammatory cells, and reduce fibrosis, following the subcutaneous implantation of carboxylated polystyrene microparticles. These polymers may be used to form polyelectrolyte complex capsules for cell encapsulation. The invention may also have many other biological applications such as antimicrobial coatings, DNA or siRNA delivery, and stem cell tissue engineering.
CONSOLIDATING COMPOSITION FOR TREATMENT OF A SUBTERRANEAN FORMATION
申请人:Halliburton Energy Services, Inc.
公开号:US20160272872A1
公开(公告)日:2016-09-22
Various embodiments disclosed relate to compositions for treating a subterranean formation and methods of using same, such as for consolidation. In various embodiments, the present invention provides a method of treating a subterranean formation, the method including obtaining or providing a composition. The composition includes an aryl component including at least one of an aryldicarboxylic acid, an ester thereof, a salt thereof, and an acid halide thereof. The composition includes an amine or epoxide component that includes at least one of component A and component B. Component A is a linear diepoxide, a poly(alkylamine), or a combination thereof. Component B is an alkoxy- or hydroxy-substituted silane including an epoxy group, an alkoxy- or hydroxy-substituted silane including an amine group, or a combination thereof. The method also includes placing the composition in a subterranean formation.