scholarly journals Formal Syntheses of Dictyodendrins B, C, and E by a Multi-substituted Indole Synthesis

2021 ◽  
Author(s):  
AKira Kabuki ◽  
Junichiro Yamaguchi
Keyword(s):  
Core Structure ◽  
Marine Alkaloids ◽  
Indole Synthesis

The dictyodendrins are a family of marine alkaloids, which possess a highly substituted pyrrolo[2,3-<i>c</i>]carbazole core. This core structure can be regarded as a multi-substituted indole and aniline moiety. To achieve a concise synthesis of dictyodendrins, we planned to capitalize on our previously developed multi-substituted indole synthesis. By using this method along with two C–H functionalizations, formal syntheses of dictyodendrin B, C, and E were achieved.

scholarly journals Formal Syntheses of Dictyodendrins B, C, and E by a Multi-substituted Indole Synthesis

2021 ◽  
Author(s):  
AKira Kabuki ◽  
Junichiro Yamaguchi
Keyword(s):  
Core Structure ◽  
Marine Alkaloids ◽  
Indole Synthesis

The dictyodendrins are a family of marine alkaloids, which possess a highly substituted pyrrolo[2,3-<i>c</i>]carbazole core. This core structure can be regarded as a multi-substituted indole and aniline moiety. To achieve a concise synthesis of dictyodendrins, we planned to capitalize on our previously developed multi-substituted indole synthesis. By using this method along with two C–H functionalizations, formal syntheses of dictyodendrin B, C, and E were achieved.

CORE STRUCTURE OF 90° PARTIAL DISLOCATIONS IN DIAMOND

1983 ◽  
Vol 44 (C4) ◽  
pp. C4-37-C4-42 ◽  
Author(s):  
K. W. Lodge ◽  
A. Lapiccirella ◽  
N. Tomassini ◽  
S. L. Altmann
Keyword(s):  
Core Structure ◽  
Partial Dislocations

CORE STRUCTURE OF CSL BOUNDARIES IN NiO

1988 ◽  
Vol 49 (C5) ◽  
pp. C5-251-C5-256 ◽  
Author(s):  
K. L. MERKLE ◽  
J. F. REDDY ◽  
C. L. WILEY ◽  
D. J. SMITH
Keyword(s):  
Core Structure

5, 6-Difluoro-benzofuran:A new core structure for the design of liquid crystal compound

2020 ◽  
Vol 35 (10) ◽  
pp. 1000-1005
Author(s):  
Jian LI ◽  
◽  
Zhao-yi CHE ◽  
Ling-chao MO ◽  
Ming-gang HU ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Core Structure ◽  
Crystal Compound

A Novel Oral Protein-Drug Delivery System with Bilayer Shell-Core Structure

2020 ◽  
Author(s):  
Xuan Zhang ◽  
Yanjun Tong ◽  
Xiaomei Lyu ◽  
Jianfen Ye ◽  
Ruijin Yang
Keyword(s):  
Drug Delivery ◽  
Drug Delivery System ◽  
Delivery System ◽  
Core Structure ◽  
Protein Drug ◽  
Protein Drug Delivery

Indexicality of Grammar: The Case of Japanese Transgender Speakers

2019 ◽  
Author(s):  
Hideko Abe
Keyword(s):  
Gender Identity ◽  
Gender Identity Disorder ◽  
Grammatical Gender ◽  
Core Structure ◽  
Subject Positions ◽  
Transgender Identity ◽  
The Core ◽  
History Of ◽  
History Of Scholarship ◽  
Grammatical Structures

This article discusses how the intersection of grammatical gender and social gender, entwined in the core structure of language, can be analyzed to understand the dynamic status of selfhood. After reviewing a history of scholarship that demonstrates this claim, the discussion analyzes the language practices of transgender individuals in Japan, where transgender identity is currently understood in terms of sei-dōitsusei-shōgai (gender identity disorder). Based on fieldwork conducted between 2011 and 2017, the analysis reveals how individuals identifying with sei-dōitsusei-shōgai negotiate subject positions by manipulating the specific indexical meanings attached to grammatical structures.

scholarly journals The Functional Role of Loops and Flanking Sequences of G-Quadruplex Aptamer to the Hemagglutinin of Influenza a Virus

2021 ◽  
Vol 22 (5) ◽  
pp. 2409
Author(s):  
Anastasia A. Bizyaeva ◽  
Dmitry A. Bunin ◽  
Valeria L. Moiseenko ◽  
Alexandra S. Gambaryan ◽  
Sonja Balk ◽  
...  
Keyword(s):  
Influenza A Virus ◽  
Influenza A ◽  
Core Structure ◽  
Dna Aptamer ◽  
Tertiary Structures ◽  
Quadruplex Dna ◽  
G Quadruplex ◽  
Flanking Sequences ◽  
Related Proteins

Nucleic acid aptamers are generally accepted as promising elements for the specific and high-affinity binding of various biomolecules. It has been shown for a number of aptamers that the complexes with several related proteins may possess a similar affinity. An outstanding example is the G-quadruplex DNA aptamer RHA0385, which binds to the hemagglutinins of various influenza A virus strains. These hemagglutinins have homologous tertiary structures but moderate-to-low amino acid sequence identities. Here, the experiment was inverted, targeting the same protein using a set of related, parallel G-quadruplexes. The 5′- and 3′-flanking sequences of RHA0385 were truncated to yield parallel G-quadruplex with three propeller loops that were 7, 1, and 1 nucleotides in length. Next, a set of minimal, parallel G-quadruplexes with three single-nucleotide loops was tested. These G-quadruplexes were characterized both structurally and functionally. All parallel G-quadruplexes had affinities for both recombinant hemagglutinin and influenza virions. In summary, the parallel G-quadruplex represents a minimal core structure with functional activity that binds influenza A hemagglutinin. The flanking sequences and loops represent additional features that can be used to modulate the affinity. Thus, the RHA0385–hemagglutinin complex serves as an excellent example of the hypothesis of a core structure that is decorated with additional recognizing elements capable of improving the binding properties of the aptamer.

Modular Counter-Fischer–Indole Synthesis through Radical-Enolate Coupling

2021 ◽  
Vol 23 (3) ◽  
pp. 1096-1102
Author(s):  
Hyunho Chung ◽  
Jeongyun Kim ◽  
Gisela A. González-Montiel ◽  
Paul Ha-Yeon Cheong ◽  
Hong Geun Lee
Keyword(s):  
Fischer Indole Synthesis ◽  
Indole Synthesis
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