scholarly journals Synthetic Sequence Design for Signal Location Search

2012 ◽  
pp. 165-179 ◽  
Author(s):  
Yaw-Ling Lin ◽  
Charles Ward ◽  
Steven Skiena
Keyword(s):  
Sequence Design ◽  
Synthetic Sequence

scholarly journals Synthetic Sequence Design for Signal Location Search

Algorithmica ◽  
2013 ◽  
Vol 67 (3) ◽  
pp. 368-383
Author(s):  
Yaw-Ling Lin ◽  
Charles Ward ◽  
Steven Skiena
Keyword(s):  
Sequence Design ◽  
Synthetic Sequence

Training Sequence Design for Low Complexity Channel Estimation in Transmit Diversity TDS-OFDM System

2009 ◽  
Vol E92-B (6) ◽  
pp. 2308-2311 ◽  
Author(s):  
Fang YANG ◽  
Kewu PENG ◽  
Jun WANG ◽  
Jian SONG ◽  
Zhixing YANG
Keyword(s):  
Channel Estimation ◽  
Transmit Diversity ◽  
Low Complexity ◽  
Training Sequence ◽  
Ofdm System ◽  
Sequence Design ◽  
Training Sequence Design

Synthesis of Elaborate Benzofuran-2-Carboxamide Derivatives Through a Combination of 8-Aminoquinoline Directed C–H Arylations and Transamidations

2019 ◽  
Author(s):  
Michael Oschmann ◽  
Linus Johansson Holm ◽  
Oscar Verho
Keyword(s):  
Small Molecule ◽  
High Efficiency ◽  
Synthetic Strategy ◽  
Small Molecule Screening ◽  
Physiological Properties ◽  
Wide Range ◽  
Directing Group ◽  
Synthetic Sequence

Benzofurans are everywhere in nature and they have been extensively studied by medicinal chemists over the years because of their chemotherapeutic and physiological properties. Herein, we describe a strategy that can be used to access elaborate benzo-2-carboxamide derivatives, which involves a synthetic sequence of 8-aminoquinoline directed C–H arylations followed by transamidations. For the directed C–H arylations, Pd catalysis was used to install a wide range of aryl and heteroaryl substituents at the C3 position of the benzofuran scaffold in high efficiency. Directing group cleavage and further diversification of the C3-arylated benzofuran products were then achieved in a single synthetic operation through the utilization of a two-step transamidation protocol. By bocylating the 8-aminoquinoline amide moiety of these products, it proved possible to activate them towards aminolysis with different amine nucleophiles. Interestingly, this aminolysis reaction was found to proceed efficiently without the need of any additional catalyst or additive. Given the high efficiency and modularity of this synthetic strategy, it constitute a very attractive approach for generating structurally-diverse collections of benzofuran derivatives for small molecule screening.

Aggregate Preamble Sequence Design and Detection for Massive IoT with Deep Learning

2021 ◽  
pp. 1-1
Author(s):  
Ahmed Elhamy Mostafa ◽  
Vincent W.S. Wong ◽  
Yong Zhou ◽  
Robert Schober ◽  
Zhe Luo ◽  
...  
Keyword(s):  
Deep Learning ◽  
Sequence Design

scholarly journals One-Pot Synthesis of Novel Multisubstituted 1-Alkoxyindoles

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1466
Author(s):  
Ye Eun Kim ◽  
Hyunsung Cho ◽  
Yoo Jin Lim ◽  
Chorong Kim ◽  
Sang Hyup Lee
Keyword(s):  
Alkyl Halide ◽  
The Novel ◽  
Reaction Conditions ◽  
One Pot ◽  
One Pot Synthesis ◽  
Consecutive Reactions ◽  
Intramolecular Condensation ◽  
Synthetic Sequence ◽  
Novel Target

Studies on a one-pot synthesis of novel multisubstituted 1-alkoxyindoles 1 and their mechanistic investigations are presented. The synthesis of 1 was successfully achieved through consecutive four step reactions from substrates 2. The substrates 2, prepared through a two-step synthetic sequence, underwent three consecutive reactions of nitro reduction, intramolecular condensation, and nucleophilic 1,5-addition to provide the intermediates, 1-hydroxyindoles 8, which then were alkylated in situ with alkyl halide to afford the novel target products 1. We optimized the reaction conditions for 1 focusing on the alkylation step, along with the consideration of formation of intermediates 8. The optimized condition was SnCl2·2H2O (3.3 eq) and alcohols (R1OH, 2.0 eq) for 1–2 h at 40 °C and then, base (10 eq) and alkyl halides (R2Y, 2.0 eq) for 1–4 h at 25–50 °C. Notably, all four step reactions were performed in one-pot to give 1 in good to modest yields. Furthermore, the mechanistic aspects were also discussed regarding the reaction pathways and the formation of side products. The significance lies in development of efficient one-pot reactions and in generation of new 1-alkoxyindoles.

Sequence Design for Spectral Shaping via Minimization of Regularized Spectral Level Ratio

2019 ◽  
Vol 67 (18) ◽  
pp. 4683-4695 ◽  
Author(s):  
Linlong Wu ◽  
Daniel P. Palomar
Keyword(s):  
Spectral Shaping ◽  
Sequence Design

Optimal pilot sequence design for channel estimation in MIMO OFDM systems

2006 ◽  
Vol 10 (1) ◽  
pp. 1-3 ◽  
Author(s):  
Die Hu ◽  
Luxi Yang ◽  
Yuhui Shi ◽  
Lianghua He
Keyword(s):  
Channel Estimation ◽  
Ofdm Systems ◽  
Sequence Design ◽  
Mimo Ofdm
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