Aggregation Behavior of a Six‐Membered Cyclic Frustrated Phosphane/Borane Lewis Pair: Formation of a Supramolecular Cyclooctameric Macrocyclic Ring System

2018 ◽  
Author(s):  
Xiaoming Jie ◽  
Constantin G. Daniliuc ◽  
Robert Knitsch ◽  
Michael Ryan Hansen ◽  
Hellmut Eckert ◽  
...  
Keyword(s):  
Pair Formation ◽  
Ring System ◽  
Aggregation Behavior ◽  
Macrocyclic Ring

Aggregation Behavior of a Six‐Membered Cyclic Frustrated Phosphane/Borane Lewis Pair: Formation of a Supramolecular Cyclooctameric Macrocyclic Ring System

2019 ◽  
Vol 58 (3) ◽  
pp. 882-886 ◽  
Author(s):  
Xiaoming Jie ◽  
Constantin G. Daniliuc ◽  
Robert Knitsch ◽  
Michael Ryan Hansen ◽  
Hellmut Eckert ◽  
...  
Keyword(s):  
Pair Formation ◽  
Ring System ◽  
Aggregation Behavior ◽  
Macrocyclic Ring

scholarly journals Luminescent zinc(ii) selone macrocyclic ring

RSC Advances ◽  
2019 ◽  
Vol 9 (26) ◽  
pp. 14841-14848 ◽  
Author(s):  
Ganesan Prabusankar ◽  
Gembali Raju ◽  
Moulali Vaddamanu ◽  
Nirmala Muthukumaran ◽  
Arruri Sathyanarayana ◽  
...  
Keyword(s):  
Photophysical Properties ◽  
Ring System ◽  
Macrocyclic Ring

The synthesis and photophysical properties of luminescent zinc(ii) selone 28 membered macrocyclic ring system is reported.

scholarly journals Dimacrolide Sesquiterpene Pyridine Alkaloids from the Stems of Tripterygium regelii

2016 ◽  
Author(s):  
Dongsheng Fan ◽  
Guo-Yuan Zhu ◽  
Ting Li ◽  
Zhi-Hong Jiang ◽  
Li-Ping Bai
Keyword(s):  
Furan Ring ◽  
Fibroblast Cell ◽  
2D Nmr ◽  
Ring System ◽  
Human Rheumatoid Arthritis ◽  
Inhibitory Effects ◽  
Macrocyclic Ring ◽  
Spectroscopic Analyses ◽  
Tripterygium Regelii ◽  
Sesquiterpene Pyridine Alkaloids

Two new dimacrolide sesquiterpene pyridine alkaloids (DMSPAs), dimacroregelines A (1) and B (2), were isolated from the stems of Tripterygium regelii. The structures of both compounds were characterized by extensive 1D and 2D NMR spectroscopic analyses, as well as HRESIMS data. Compounds 1 and 2 are two rare DMSPAs possessing unique 2-(3′-carboxybutyl)-3-furanoic acid units forming the second macrocyclic ring, representing the first example of DMSPAs bearing an extra furan ring in their second macrocyclic ring system. Compound 2 showed inhibitory effects on the proliferation of human rheumatoid arthritis synovial fibroblast cell (MH7A) at a concentration of 20 μM.

Design and synthesis of unsymmetric macrocyclic hexaoxazole compounds with an ability to induce distinct G-quadruplex topologies in telomeric DNA

2016 ◽  
Vol 14 (22) ◽  
pp. 5109-5116 ◽  
Author(s):  
Mai Sakuma ◽  
Yue Ma ◽  
Yamato Tsushima ◽  
Keisuke Iida ◽  
Takatsugu Hirokawa ◽  
...  
Keyword(s):  
Ring System ◽  
Side Chains ◽  
Telomeric Dna ◽  
Macrocyclic Ring ◽  
Design And Synthesis ◽  
G Quadruplex

New macrocyclic hexaoxazole compounds bearing two side chains on an unsymmetrical macrocyclic ring system,i.e., 4,2-L2H2-6OTD (2) and 5,1-L2H2-6OTD (3), were designed as candidate G-quadruplex (G4) ligands and synthesized.

ChemInform Abstract: The First Synthesis of the ABCD Ring System of Manzamine A. Construction of the Macrocyclic Ring D.

ChemInform ◽  
2010 ◽  
Vol 25 (37) ◽  
pp. no-no
Author(s):  
B. C. BORER ◽  
S. DEERENBERG ◽  
H. BIERAEUGEL ◽  
U. K. PANDIT
Keyword(s):  
Ring System ◽  
Manzamine A ◽  
Macrocyclic Ring

scholarly journals The first synthesis of the ABCD ring system of manzamine A. Construction of the macrocyclic ring D

1994 ◽  
Vol 35 (19) ◽  
pp. 3191-3194 ◽  
Author(s):  
Bennett C. Borer ◽  
Sirik Deerenberg ◽  
Hans Bieräugel ◽  
Upendra K. Pandit
Keyword(s):  
Ring System ◽  
Manzamine A ◽  
Macrocyclic Ring

Stochasting modeling of planetary ring systems

1984 ◽  
Vol 75 ◽  
pp. 461-469 ◽  
Author(s):  
Robert W. Hart
Keyword(s):  
Maximum Entropy ◽  
Ring System ◽  
The Sun ◽  
Ultimate State ◽  
Interparticle Interactions ◽  
Ring Systems ◽  
First Order ◽  
Planetary Ring ◽  
Insight Into

ABSTRACTThis paper models maximum entropy configurations of idealized gravitational ring systems. Such configurations are of interest because systems generally evolve toward an ultimate state of maximum randomness. For simplicity, attention is confined to ultimate states for which interparticle interactions are no longer of first order importance. The planets, in their orbits about the sun, are one example of such a ring system. The extent to which the present approximation yields insight into ring systems such as Saturn's is explored briefly.

Effectiveness of Brushing Associated with Oral Irrigation in Maintenance of Peri-Implant Tissues and Overdentures: Clinical Parameters and Patient Satisfaction.

2020 ◽  
Author(s):  
Marcela Moreira Salles ◽  
Viviane de Cássia Oliveira ◽  
Ana Paula Macedo ◽  
Claudia Helena Silva-Lovato ◽  
Helena de Freitas Oliveira Paranhos
Keyword(s):  
Patient Satisfaction ◽  
Analogue Scale ◽  
Ring System ◽  
Complete Dentures ◽  
Gingival Index ◽  
Prosthetic Rehabilitation ◽  
Mean Values ◽  
Probing Depth ◽  
Significant Difference ◽  
High Level

Implant-supported prostheses hygiene and peri-implant tissues health are considered to be predictive factors for successful prosthetic rehabilitation. Therefore, the purpose of this study was to evaluate the effectiveness of brushing associated with oral irrigation measured as biofilm-removing capacity, maintenance of healthy oral tissues, and patient satisfaction. A randomized, crossover clinical trial was conducted with 38 patients who wore conventional maxillary complete dentures and mandibular overdentures retained by the O-ring system. The patients were instructed to use the following hygiene methods for 14 days: mechanical brushing [MB (brush and dentifrice - Control)]; and MB with oral irrigation [WP (Waterpik - Experimental)]. Biofilm-removing capacity and maintenance of healthy oral tissues were evaluated by the Modified Plaque Index (PI), Gingival Index (GI), Probing Depth (PD), and Bleeding on Probing Index (BP) recorded at baseline and after each method. In parallel, patients answered a specific questionnaire using a Visual Analogue Scale after each hygiene method. Data were analyzed by Friedman and Wilcoxon tests (α=0.05). The results showed significantly lower PI, GI, PD, and BP indices after application of the hygiene methods (P<0.001) than those observed at baseline. However, no significant difference was found between MB and WP. The satisfaction questionnaire responses to both methods showed high mean values for all questions, with no statistically significant difference found between the answers given after the use of MB and WP (P>0.05). The findings suggest that WP was effective in reducing PI, GI, PD, and BP indices and provided a high level of patient satisfaction.

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