Straightforward Synthesis of a Double-Lasso Macrocycle from a Nonsymmetrical [c2]Daisy Chain
摘要:
The straightforward synthesis of a double-lasso macrocycle from a nonsymmetrical [c2]daisy chain, using the copper(I)-catalyzed Huisgen alkyne-azide 1,3-dipolar cycloaddition, is described. The preparation of the nonsymmetrical alkyne azide [c2]daisy chain precursor was realized in situ via the exchange of the monomers contained in both symmetrical alkyne and azide [c2]daisy chains and was followed by mass spectrometry.
For remote Hg2+ detection, an array of nanotips was covalently functionalised using a versatile photochemical approach. After chemical etching of an optical fiber bundle to generate the nanotip array, a protected n-propyl amine was grafted onto the tip surface by silanisation and thereafter photodeprotected by irradiation at 365 nm. The new rhodamine-based probe 9 developed for detection of Hg2+ was linked to the liberated amino group using the HOBt/DCC protocol. The optical fiber bundles functionalised with 9 exhibited a high selectivity toward Hg2+in situ, in full analogy to its precursor 4 in solution. Titration of the functionalised optical fiber bundles using a remote detection mode showed a detection range from 10−5 to 5 × 10−3 M for mercury ions in aqueous medium.
induce dynamic membrane deformation have been reported, a molecular approach enabling membrane transport in which membrane deformation is coupled with substance binding and transport remains critically lacking. Here, we developed an amphiphilic molecular machine containing a photoresponsive diazocine core (AzoMEx) that localizes in a phospholipid membrane. Upon photoirradiation, AzoMEx expands the liposomal
Thiophene Carboxamide Analogs with Long Alkyl Chains Comprising Ethylene Glycol Units Inhibit Glioblastoma Cell Proliferation by Activating AMPK
作者:Kaito Ohta、Hiromi Ii、Chiami Moyama、Shota Ando、Hisanori Nambu、Susumu Nakata、Naoto Kojima
DOI:10.1021/acs.jmedchem.3c00474
日期:2023.5.11
analog of annonaceousacetogenins, shows potentantitumor activity against glioblastomas. However, the synthesis of 1 requires 23 steps, including 16 steps for the preparation of a tetrahydrofuran (THF) moiety. This study reports the design and synthesis of 11 analogs with a triethylene glycol moiety in place of the THF moiety in 1. Among these, the analog 2k with an n-decyl chain exhibited potent inhibitory
申请人:Centre National de la Recherche Scientifique (CNRS)
公开号:US10908153B2
公开(公告)日:2021-02-02
The invention relates to a method of identifying molecules which inhibit the virulence machinery of Pseudomonas aeruginosa, to a device for identifying a molecule which inhibits the virulence machinery of Pseudomonas aeruginosa, to novel compounds which inhibit the virulence machinery of Pseudomonas aeruginosa, to compounds for use for preventing and/or treating a pathogenic infection caused by Pseudomonas aeruginosa and also to pharmaceutical compositions for preventing and/or treating a pathogenic infection caused by Pseudomonas aeruginosa.
The present invention aims to provide a novel AMP-activated protein kinase activator.
The present invention relates to a compound represented by the formula (I):
wherein each symbol is as described in the specification, or a salt thereof, or a hydrate thereof. In addition, the present invention relates to an AMP-activated protein kinase activator containing the aforementioned compound, and a medicament containing the aforementioned compound for the prophylaxis and/or treatment of cancer.