scholarly journals Chirality Induction in Bioorganometallic Conjugates

Inorganics ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 111
Author(s):  
Toshiyuki Moriuchi ◽  
Satoshi Ohmura ◽  
Takayo Moriuchi-Kawakami
Keyword(s):  
Hydrogen Bonding ◽  
Organometallic Chemistry ◽  
Organometallic Compounds ◽  
Research Field ◽  
Bioorganometallic Chemistry ◽  
Promising Strategy ◽  
Chiral Centers ◽  
Chirality Induction ◽  
Helical Chirality

Considerable attention has been given to the research field of bioorganometallic chemistry, which is a hybrid chemistry field between biology and organometallic chemistry. The introduction of biomolecules, which have hydrogen bonding sites and chiral centers, into organometallic compounds is a promising strategy to construct chirality-organized bioorganometallic conjugates. This feature paper sketches an outline of induction of helical chirality into bioorganometallic conjugates by the control of a torsional twist of the organometallic moiety. Topics covered included control of the helical chirality of 1,n′-disubstituted ferrocene moieties in ferrocene-dipeptide conjugates, and the chirality induction of the Au(I)–Au(I) axis in the dinuclear organogold(I)-uracil conjugates.

scholarly journals Chirality Induction in Bioorganometallic Conjugates

2018 ◽  
Author(s):  
Toshiyuki Moriuchi ◽  
Satoshi D. Ohmura ◽  
Takayo Moriuchi-Kawakami
Keyword(s):  
Hydrogen Bonding ◽  
Organometallic Chemistry ◽  
Organometallic Compounds ◽  
Research Field ◽  
Bioorganometallic Chemistry ◽  
Promising Strategy ◽  
Chiral Centers ◽  
Chirality Induction ◽  
Helical Chirality

Considerable attention has been given to the research field of bioorganometallic chemistry, which is a hybrid chemistry field between biology and organometallic chemistry. The introduction of biomolecules, which have hydrogen bonding sites and chiral centers, into organometallic compounds is considered to be a promising strategy to construct chirality-organized bioorganometallic conjugates. This feature paper sketches an outline of induction of helical chirality into bioorganometallic conjugates. Topics covered include control of the helical chirality of 1,n’-disubstituted ferrocene moieties in ferrocene-dipeptide conjugates and the chirality induction of the Au(I)–Au(I) axis in the dinuclear organogold(I)-uracil conjugates.

scholarly journals Recent Advances in Organometallic Chemistry and Catalysis

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 646
Author(s):  
Victorio Cadierno
Keyword(s):  
Organic Chemistry ◽  
Organometallic Chemistry ◽  
Organometallic Compounds ◽  
Synthetic Methodology ◽  
Recent Advances

The use of organometallic compounds in organic chemistry is one of the cornerstones of the modern synthetic methodology for the activation and generation of new bonds in a molecule [...]

Helical Chirality Induction by Point Chirality at Helix Terminal

1999 ◽  
Vol 121 (4) ◽  
pp. 754-759 ◽  
Author(s):  
Tadashi Mizutani ◽  
Shigeyuki Yagi ◽  
Tomoko Morinaga ◽  
Tetsutaro Nomura ◽  
Toru Takagishi ◽  
...  
Keyword(s):  
Chirality Induction ◽  
Helical Chirality

ChemInform Abstract: Is Water a Friend or Foe in Organometallic Chemistry? The Case of Group 13 Organometallic Compounds

ChemInform ◽  
2010 ◽  
Vol 32 (24) ◽  
pp. no-no
Author(s):  
Herbert W. Roesky ◽  
Mrinalini G. Walawakar ◽  
Ramaswamy Murugavel
Keyword(s):  
Organometallic Chemistry ◽  
Organometallic Compounds ◽  
Group 13

Helical Chirality Induction in Zinc Bilindiones by Amino Acid Esters and Amines

1998 ◽  
Vol 63 (24) ◽  
pp. 8769-8784 ◽  
Author(s):  
Tadashi Mizutani ◽  
Shigeyuki Yagi ◽  
Atsushi Honmaru ◽  
Shinji Murakami ◽  
Masaru Furusyo ◽  
...  
Keyword(s):  
Amino Acid ◽  
Amino Acid Esters ◽  
Chirality Induction ◽  
Acid Esters ◽  
Helical Chirality

scholarly journals Chirality Induction from a Chiral Guest to the Hydrogen-Bonding Network of Its Hexameric Resorcinarene Host Capsule

ChemPhysChem ◽  
2017 ◽  
Vol 18 (15) ◽  
pp. 1987-1991 ◽  
Author(s):  
Corina H. Pollok ◽  
Qi Zhang ◽  
Konrad Tiefenbacher ◽  
Christian Merten
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonding Network ◽  
Chirality Induction

scholarly journals Enriching datasets for sentiment analysis in tweets with instance selection

2021 ◽  
Author(s):  
Eliseu Guimarães ◽  
Daniela Vianna ◽  
Aline Paes ◽  
Alexandre Plastino
Keyword(s):  
Sentiment Analysis ◽  
Essential Role ◽  
Research Field ◽  
Instance Selection ◽  
Similarity Metrics ◽  
Training Set ◽  
Predictive Capacity ◽  
Promising Strategy ◽  
Enrich Target

Sentiment analysis in tweets is a research field of great importance, mainly due to the popularity of Twitter. However, collecting and annotating tweets is an expensive and time-consuming task, making that some domains have only a limited set of labeled data. A promising strategy to handle this issue is to leverage labeled domains rich in data to select instances that enrich target datasets. This paper proposes different strategies for selecting instances from a set of labeled source datasets in order to improve the performance of classifiers trained only with the target dataset. Different approaches are proposed, including similarity metrics and variations in the number of selected instances. The results show that the size of the training set plays an essential role in the predictive capacity of the classifier. Furthermore, the results point out the importance of taking into account diversity criteria when selecting the instances.

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