Nanoscale Molecular Rods with a New Building Block for Solubility Enhancement
作者:Pablo Wessig、Kristian Möllnitz
DOI:10.1021/jo800341k
日期:2008.6.1
A new buildingblock bearing a [1,3]dioxolo[4,5-f][1,3]benzodioxole core was developed to enhance the solubility of molecular rods by lateral alkyl chains. On incorporation in molecular rods with oligospiroketal structure, the straight geometry is retained, which was concluded from the X-ray crystal structure analysis of one of the rods. The determination of the solubility of a collection of rods bearing
开发了一种新的带有[1,3] dioxolo [4,5- f ] [1,3]苯并二恶唑核的结构单元,以通过侧链烷基链增强分子棒的溶解性。在掺入具有低螺缩酮结构的分子棒中时,保留了直的几何形状,这是根据其中一根棒的X射线晶体结构分析得出的结论。确定带有该结构单元的棒的集合的溶解度表明,丁基已经有效地阻碍了棒的聚集,因此导致溶解度的显着提高。哌啶环位于杆的末端,这为通用功能化提供了机会。因此,Ñ,Ñ制备了“-双(叠氮乙酰基)-官能化的棒”,该棒可以通过“点击”反应引发的刚性连接。
TIACUMICIN DERIVATIVES AND THEIR USE AS ANTIBIOTICS
申请人:Universität Zürich
公开号:EP3508492A1
公开(公告)日:2019-07-10
The invention relates to a compound according to formula (1)
wherein R1 to R4 and X are independently from each other a small functional group and R5 is -OH, or -O-Ln-Rap-Rbq-Lt-Rar-Rbs-Re, -O-Ln-Rbq-Rd-Lt-Rbs-Re with L being an alkyl linker, Ra being carbonyl, carboxyl or carboxamide, Rb being a cyclic moiety, Rd being a polyether linker and Re being a small functional end group, fluorescent dye or antibiotic with the proviso that the compound is not fidaxomicin.
Furthermore, the invention relates to the use of the compound in the treatment of disease and the use in treating infections and/or bacterial infections caused by drug resistant bacteria.
Semisynthetic Analogs of the Antibiotic Fidaxomicin—Design, Synthesis, and Biological Evaluation
作者:Andrea Dorst、Regina Berg、Christoph G. W. Gertzen、Daniel Schäfle、Katja Zerbe、Myriam Gwerder、Simon D. Schnell、Peter Sander、Holger Gohlke、Karl Gademann
DOI:10.1021/acsmedchemlett.0c00381
日期:2020.12.10
glycoslated macrocyclic antibiotic fidaxomicin (1, tiacumicinB, lipiarmycin A3) displays good to excellent activity against Gram-positive bacteria and was approved for the treatment of Clostridium difficile infections (CDI). Among the main limitations for this compound, its low water solubility impacts further clinical uses. We report on the synthesis of new fidaxomicin derivatives based on structural
Chloroquinoline–acetamide hybrids: a promising series of potential antiprotozoal agents
作者:Afreen Inam、Robyn L. Van Zyl、Natasha J. van Vuuren、Chien-Teng Chen、Fernando Avecilla、Subhash M. Agarwal、Amir Azam
DOI:10.1039/c5ra05472a
日期:——
In an endeavour to develop efficacious antiprotozoal agents chloroquinoline–acetamide hybrids were synthesized and screened in vitro against E. histolytica and P. falciparum and molecular docking studies were performed against PfDHFR.
phosphodiesterase 4 (PDE4) family of enzymes. Selected rolipram-related PDE4 inhibitors, members of the GEBR library, have been shown to increase hippocampal cAMP levels, providing pro-cognitive benefits with a safe pharmacological profile. In a recent SAR investigation involving a subset of GEBR library compounds, we have demonstrated that, depending on length and flexibility, ligands can either adopt a