[EN] NISIN-BASED COMPOUNDS AND USE THEREOF IN THE TREATMENT OF BACTERIAL INFECTIONS<br/>[FR] COMPOSÉS À BASE DE NISINE ET LEUR UTILISATION DANS LE TRAITEMENT D'INFECTIONS BACTÉRIENNES
申请人:UNIV UTRECHT HOLDING BV
公开号:WO2016116379A1
公开(公告)日:2016-07-28
The invention relates to new antimicrobial compounds derived from nisin. In particular, the compounds are based on the unsubstituted nisin [1-12] structure, wherein said compounds have an antimicrobial activity exceeding the activity of the unsubstituted nisin [1-12] structure.
Inclusion complexation of a deep cavitand with imidazoquinoxaline flaps forming stable vase-like conformation
作者:Quoc-Thiet Nguyen、Suban K. Sahoo、Heung-Jin Choi
DOI:10.1016/j.tet.2018.01.049
日期:2018.4
The stability of the vase-like conformation of a deepcavitand 1 with four imidazoquinoxaline flaps was studied in CDCl3/CD3OD by 1H NMR method. The annular tautomerism of cavitand 1·4MeOD in CDCl3/CD3OD (1:9 v/v) was investigated by 1H NMR and the free energy of activation (ΔG‡268) of this process was measured as 12.9 kcal/mol at a coalescence temperature of 263 K. The inclusion complexation of 1
通过1 H NMR方法在CDCl 3 / CD 3 OD中研究了具有四个咪唑并喹喔啉瓣的深腔体1的花瓶状构象的稳定性。通过1 H NMR研究了Cavitand 1 ·4MeOD在CDCl 3 / CD 3 OD(1:9 v / v)中的环状互变异构现象,该过程的活化自由能(ΔG ‡ 268)为12.9 kcal / mol。在263 K的聚结温度下。1的夹杂物络合 与各种棒状脂肪酰胺和脂肪酯形成的主客体络合物以1:1的化学计量比形成,其中来宾的烷基链盘旋在空腔内,并通过CH /π与咪唑并喹喔啉瓣的扩大的芳族π表面相互作用而稳定。
Environmentally benign decarboxylative <i>N</i>-, <i>O</i>-, and <i>S</i>-acetylations and acylations
作者:Santanu Ghosh、Anisha Purkait、Chandan K. Jana
DOI:10.1039/d0gc03731a
日期:——
An operationally simple and general method for acetylation and acylation of a wide variety of substrates (amines, alcohols, phenols, thiols, and hydrazones) has been reported. Meldrum's acid and its derivatives have been used as an air-stable, non-volatile, cost-effective, and easy to handle acetylating/acylating agent. Easily separable byproducts (CO2 and acetone) allowed the isolation of analytically
Conformation, and Charge Tunneling through Molecules in SAMs
作者:Lee Belding、Samuel E. Root、Yuan Li、Junwoo Park、Mostafa Baghbanzadeh、Edwin Rojas、Priscilla F. Pieters、Hyo Jae Yoon、George M. Whitesides
DOI:10.1021/jacs.0c12571
日期:2021.3.10
and influences the rates of tunneling. When R1 = R2, the rates of CT decrease (up to 6.3×), relative to rates of CT observed through SAMs having the same total chain lengths, or thicknesses, when R1 = H. When R1 ≠ H ≠ R2, there is a weaker correlation (relative to that when R1 = H or R1 = R2) between current density and chain length or monolayer thickness, and in some cases the rates of CT through SAMs
本文证明,构成自组装单层 (SAM) 的分子的分子构象(除了组成和结构外)影响通过它们的电荷隧穿 (CT) 速率,在形式为 Au TS / S( CH 2 ) 2 CONR 1 R 2 //Ga 2 O 3 /EGaIn,其中R 1和R 2是不同长度的烷基链。链的长度 R 1和 R 2选择影响单层中分子的构象和构象均匀性。分子的构象影响单层的厚度(即隧道势垒宽度)及其在±1.0 V 时的整流比。当R 1 = H 时,分子有序且主要以反式扩展构象存在。然而,当R 1是烷基(例如,R 1 ≠H)时,它们的构象不再是全反式延伸的,并且分子采用更多的斜切二面角。构象类型的这种变化降低了构象顺序并影响隧穿速率。当 R 1 = R 2,当 R 1 = H 时,相对于通过具有相同总链长或厚度的 SAM 观察到的 CT 速率,CT 速率降低(高达 6.3 倍)。当 R 1 ≠ H ≠ R 2 时,存在较弱