Results 61 to 70 of about 41,404 (206)

Cyclotriphosphazanes and bicyclic tetraphosphapentazanes

open access: yes, 1999
An unusual ring contraction-rearrangement occurs in the reactions of trifluoroethoxy/aryloxy lambda(3)-cyclotriphosphazanes and the bicyclic phosphazane, (EtN)(5)P-4(OPh)(2) (L) with tetrachloro-1,2-benzoquinone (TCB) to give lambda(5 ...
Thirupathi, N   +5 more
core   +1 more source

Cutting‐edge advances in bicyclic peptide‐based radiotracers for cancer imaging and theranostics

open access: yesView
Along with successful clinical approval of radiopharmaceuticals targeting somatostatin receptor subtype 2 and prostate‐specific membrane antigen, peptide‐based radiotracers have garnered the increasing attention in cancer imaging and theranostics.
Hengyi Ou, Xiaobo Wang, Fei Kang
doaj   +1 more source

Characterization of the Minimizing Graph of the Connected Graphs Whose Complements Are Bicyclic

open access: yesMathematics, 2017
In a certain class of graphs, a graph is called minimizing if the least eigenvalue of its adjacency matrix attains the minimum. A connected graph containing two or three cycles is called a bicyclic graph if its number of edges is equal to its number of ...
Muhammad Javaid
doaj   +1 more source

Stability trends in carbocation intermediates stemming from germacrene A and hedycaryol

open access: yesBeilstein Journal of Organic Chemistry
In the current work, we analyzed the origin of difference in stabilities among the germacrene A and hedycaryol-derived carbocations. This study focused on twelve hydrocarbons derived from germacrene A and twelve from hedycaryol, which can be divided into
Naziha Tarannam   +3 more
doaj   +1 more source

An amphiphilic pseudo[1]catenane: neutral guest-induced clouding point change

open access: yesBeilstein Journal of Organic Chemistry, 2018
The hydrophobic/hydrophilic ratio in a molecule largely affects its assembled properties in aqueous media. In this study, we synthesized a new bicyclic compound which could dynamically change its hydrophobic/hydrophilic ratio by chemical stimulus.
Tomoki Ogoshi   +2 more
doaj   +1 more source

Accessing diverse bicyclic peptide conformations using 1,2,3-TBMB as a linker

open access: yes
Bicyclic peptides are a powerful modality for the engagement of challenging drug targets such as protein-protein interactions. The most common crosslinkers used to generate bicyclic peptides are C3-symmetrical, with evenly positioned peptide loops facing
Lisa, Alcock   +2 more
core   +1 more source

Sharp bounds on the additively weighted Mostar index of bicyclic graphs

open access: yesKuwait Journal of Science
The additively weighted Mostar index is a newly weighted variant of the Mostar index. Extensive studies have been conducted on the bounds of the additively weighted Mostar index of graphs.
Liju Alex   +2 more
doaj   +1 more source

Transport bicycles

open access: yesProceedings of the National Academy of Sciences, 1997
Uphill transport of one substrate (the driven substrate) can be coupled to the dissipation of an electrochemical potential gradient of another substrate (the driving substrate), to an exergonic chemical reaction, or to a photoreaction. In all cases, the driven substrate is taken up from a low concentration (or relatively low electrochemical potential ...
openaire   +3 more sources

Domino reactions for the synthesis of bridged bicyclic frameworks: fast access to bicyclo[n.3.1]alkanes

open access: yes, 2011
In the current bid for synthetic efficiency{,} multiple bond-forming transformations are becoming a key concept in organic synthesis. In this context{,} domino protocols have become increasingly common in the synthesis of bicyclic systems.
López-Alvarado Gutiérrez, María Pilar   +3 more
core   +1 more source

Synthesis and Physicochemical Characteristics of 6,6-Difluorobicyclo[3.2.0]heptane Derivatives

open access: yesЖурнал органічної та фармацевтичної хімії
The gram-scale synthesis of 6,6-difluorobicyclo[3.2.0]heptane-derived building blocks (i.e., primary amine and carboxylic acid) was performed via the deoxofluorination of the corresponding bicyclic keto ester with diethylaminosulfur trifluride (DAST ...
Bohdan L. Moroz   +5 more
doaj   +1 more source

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