Synthesis and Self-Assembly Processes of Monofunctionalized Cucurbit[7]uril
摘要:
We present a building-block approach toward functionalized CB[7] derivatives by the condensation of methylene-bridged glycoluril hexamer 1 and glycoluril bis(cyclic ethers) 2 and 12. The CB[7] derivatives Me2CB[7] and CyCB[7] are highly soluble in water (264 mM and 181 mM, respectively). As a result of the high intrinsic solubility of Me2CB[7], it is able to solubilize the insoluble benzimidazole drug albendazole. The reaction of hexamer 1 with glycoluril derivative 12, which bears a primary alkyl chloride group, gives CB[7] derivative 18 in 16% isolated yield. Compound 18 reacts with NaN3 to yield azide-substituted CB[7] 19 in 81% yield, which subsequently undergoes click reaction with propargylammonium chloride (21) to yield CB[7] derivative 20 in 95% yield, which bears a covalently attached triazolyl ammonium group along its equator. The results of NMR spectroscopy (H-1, variable-temperature, and DOSY) and electrospray mass spectrometry establish that 20 undergoes self-assembly to form a cyclic tetrameric assembly (20(4)) in aqueous solution. CB[7] derivatives bearing reactive functional groups (e.g., N-3, Cl) are now available for incorporation into more complex functional systems.
The present invention relates to ruthenium complexes, and in particular di- and multi- nuclear ruthenium complexes which may be used as antimicrobial agents. The invention also relates to pharmaceutical compositions comprising such complexes, and methods for their use in treating or preventing microbial infections.
[EN] AFFINITY-ASSISTED PROTEIN MODIFICATION AND RECYCLING<br/>[FR] MODIFICATION ET RECYCLAGE DE PROTÉINES BASÉS SUR LEUR AFFINITÉ
申请人:UNIV CALIFORNIA
公开号:WO2016118770A1
公开(公告)日:2016-07-28
The present invention provides methods for preparing a protein conjugate having a defined number of conjugate groups. The method includes: forming a mixture containing a macrocyclic matrix material and a plurality of proteins; eluting the proteins from the macrocyclic matrix material to obtain a first separated protein fraction and a second separated protein fraction, wherein substantially all of the proteins in the first separated protein fraction have the same number of handle moieties; contacting the handle moieties with a conversion reagent under conditions sufficient to convert the handle moieties in the first separated protein fraction to reactive moieties; and contacting the reactive moieties with a conjugation reagent under conditions sufficient to form a plurality of protein conjugates, wherein substantially all of the protein conjugates in the plurality have the same number of conjugate groups. Also disclosed are methods for recovering enzymes and other proteins from mixtures for isolation and/or reuse of the enzymes and proteins.
[EN] DYNAMIC HOST-GUEST INTERACTIVE SYSTEM<br/>[FR] SYSTÈME INTERACTIF HÔTE-INVITÉ DYNAMIQUE
申请人:JAWAHARLAL NEHRU CENTRE FOR ADVANCED SCIENT RESEARCH
公开号:WO2019034945A1
公开(公告)日:2019-02-21
The present invention relates to a dynamic host-guest interactive system that possesses unique characteristics and finds utility in multitude of areas, specifically, in imaging and site directed drug delivery. An aspect of the present disclosure provides a dynamic host-guest interactive system including a host molecule and a guest molecule interacting with each other through non-covalent forces, wherein the host molecule is associated with any or a combination of a targeting moiety and a therapeutic agent with proviso that when the host molecule is associated with the targeting moiety, the guest molecule is associated with an imager, and when the host molecule is associated with the therapeutic agent, the guest molecule is associated with the targeting moiety, and when the host molecule is associated with a combination of the therapeutic agent and the targeting moiety, the guest molecule is associated with the imager. Another aspect provides a dynamic host-guest interactive system for site specific drug delivery of relatively less cell membrane permeable drug(s).
[EN] METHOD AND ARRAY FOR IDENTIFYING HISTONE-CODE-RELATED ANALYTES<br/>[FR] PROCÉDÉ ET RÉSEAU POUR L'IDENTIFICATION D'ANALYTES LIÉS AU CODE DES HISTONES
申请人:UVIC INDUSTRY PARTNERSHIPS INC
公开号:WO2013091074A1
公开(公告)日:2013-06-27
Disclosed embodiments concern an array for use in identifying or identifying and quantifying analytes in a sample using a macrocyclic sensor comprising a macrocyclic compound and a detectable moiety. The disclosed array may be used to discriminate among various analytes based on different features, such as post- translational modifications, isomeric post-translational modifications, and the peptide sequence around post-translational modifications. Also disclosed is a method for identifying analytes comprising a post-translational modification, as well as an enzymatic assay using the disclosed macrocyclic sensor.
Bromine and iodine–cucurbit[6]uril complexes: preparation and applications in synthetic organic chemistry
作者:K. R. K. K. Reddy、T. S. Cavallini、G. J. F. Demets、L. F. Silva
DOI:10.1039/c4nj00284a
日期:——
Iodine and bromine inclusion compounds were easily prepared by gas diffusion of the halogens using finely powdered CB[6]. A brown powder consisting of I2âCB[6]·4H2O and an orange one of (Br2)4âCB[6]·10H2O were employed in several different reactions. I2âCB[6] can be used in catalytic reactions giving yields comparable to those reported in the literature. Br2âCB[6] was effectively applied in electrophilic bromination of benzene and formation of bromohydrin. However, the radical substitution at cyclohexene could not be performed. Overall, based on these results, several applications can be envisioned for these complexes.