Design, synthesis, and evaluation of Leu∗Ala hydroxyethylene-based non-peptide β-secretase (BACE) inhibitors
摘要:
With the aim of developing small molecular non-peptide P-secretase (BACE) inhibitors, Leu*Ala hydroxyethylene (HE) was investigated as a scaffold to design and synthesize a series of compounds. Taking advantage of efficient combinatorial synthesis approaches and molecular modeling, extensive structure-activity relationship (SAR) studies were carried out on the N- and C-terminal residues of the Leu*Ala HE scaffold. Isobutyl amine was found to be an optimal C-cap, and suitable hydroxylalkylamines at the 3-position and nitro or methyl(methylsulfonyl)amine at the 5-position of isophthalamide as the N-terminus could form additional hydrogen bonds with BACE active sites and help improve potency. Many new potent non-peptide BACE inhibitors were identified in this study. Among them, compounds 37 and 44 exhibited excellent enzyme-inhibiting potency, comparable to that of OM99-2, and obvious inhibitory effects in cell-based assay with low molecular weights (< 600). (c) 2006 Elsevier Ltd. All rights reserved.
An objective of the present invention is to provide electrophoretic separation methods and devices that enable the various features of a substrate surface that comes in contact with an electrophoresis medium to be controlled. The present invention provides methods for electrophoresing substances, which comprises the steps of: (a) adding a substance to be analyzed to an electrophoresis medium retained in a substrate, whose surface that has come in contact with the electrophoresis medium has been coated with a polymer membrane; and (b) adding electrophoretic pressure to the electrophoresis medium. For example, the use of a plasma-polymerized membrane allows the formation of a membrane with homogeneous quality and thickness on the surface of an arbitrary shape. In addition, desired characteristics can be conferred on the surface through selection of monomeric substances. Protein adsorption onto micro-chips can be effectively prevented as well.
[EN] RADICALLY POLYMERIZABLE SULFUR-CONTAINING COMPOUND AND RADICALLY POLYMERIZABLE SULFUR-CONTAINING POLYMER<br/>[FR] COMPOSE POLYMERISABLE PAR VOIE RADICALAIRE, CONTENANT DU SOUFRE, ET POLYMERE POLYMERISABLE PAR VOIE RADICALAIRE, CONTENANT DU SOUFRE
申请人:SHOWA DENKO KK
公开号:WO2006033438A1
公开(公告)日:2006-03-30
The invention relates to a radically polymerizable sulfur-containing compound having a group represented by formula (1) and at least one selected from among groups represented by formulae (2) to (4) , a radically polymerizable sulfur-containing polymer obtained by subjecting the compound to cationic ring-opening (co)polymerization, production process thereof, a composition containing the sulfur-containing compound and/or the sulfur-containing polymer, and a cured product obtained from the composition……………. (1)(2) (3) (4)………….( R1 to R6 each independently represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.) The cured product obtained from the radically polymerizable sulfur-containing compound and the radically polymerizable sulfur-containing polymer having a high refractive index is useful as an optical material, especially for lens material.
An acid-dyeable polymer composition comprising (a) polymer and (b) polymeric additive comprising repeating units having the formula:
1
or salts thereof, wherein A, B and Q, which may be the same or different, are selected from aliphatic or aromatic substituents provided that at least four carbon atoms separate any two nitrogen groups, R is an aliphatic or aromatic group, a is 1 to 5, and n is 3 to about 1,000. In addition, an acid-dyed composition prepared from the composition, a process of acid dyeing the composition and a process for preparing the composition.
This invention is a dihydro-benzo[b][1,4]diazepin-2-one derivative of the formula
wherein R1, R2, R3 and Y are as defined in the specification. The invention includes pharmaceutical compositions containing these compounds, a process for their preparation and a method of treatment or prevention of acute and/or chronic neurological disorders by administering an effective amount of the compound of formula I or a pharmaceuticall acceptable salt thereof.
Controlled release coating comprising blend of silicone and adhesion promoter
申请人:Mitsubishi Polyester Film LLC (formely Hoechst Diafoil Co.)
公开号:EP0920986A1
公开(公告)日:1999-06-09
A reclaimable release coating composition is provided which includes a blend of an adhesion promoter and a silicone release agent which may be applied from an aqueous solution, dispersion or emulsion. The components form regions of adhesion promoting sites disrupted by regions of release sites on the surface of a release backing substrate coated with the composition. The different regions are substantially homogeneously distributed across the entirety of the release surface. When used as a release coating for a backing to protect an adhesive, a controlled release force of a predictable value may be obtained by providing a known weight ratio of adhesion promoter to silicone release agent in the coating composition. A substantially linear relationship is also provided between the release force required to peel a non-silicone adhesive from the release coating surface, and the weight ratio of vinyl-functional polyorganosiloxane oil to hydrogen-functional siloxane crosslinker in the release agent, such that a consistent, uniform and repeatable release force from the surface may be obtained.