Results 101 to 110 of about 11,747 (233)

Microwave-Assisted Post-Ugi Reactions for the Synthesis of Polycycles [PDF]

open access: gold, 2022
Liangliang Song   +2 more
openalex   +1 more source

Cell Fate Determination and Lineage Tracing: Technological Evolution and Multidimensional Applications

open access: yesAdvanced Science, Volume 12, Issue 41, November 6, 2025.
This figure is a candidate for the cover image. It shows a whole‐mount fluorescent image of lymphatic vessels (red) in the heart of an adult Cdh5‐Dre; Prox1‐RSR‐CreER; Rosa26‐tdT mouse. Image courtesy of Ximeng Han. Abstract Cell fate determination is a fundamental process in multicellular development.
Hui Chen   +3 more
wiley   +1 more source

Convergent synthesis of 13N-labelled Peptidic structures using aqueous [13N]NH3

open access: yesEJNMMI Radiopharmacy and Chemistry, 2017
Background Nitrogen-13 has a 10-min half-life which places time constraints on the complexity of viable synthetic methods for its incorporation into PET imaging agents.
Julia E. Blower   +2 more
doaj   +1 more source

Ugi bisamides based on pyrrolyl-β-chlorovinylaldehyde and their unusual transformations

open access: yesBeilstein Journal of Organic Chemistry
By one-pot four- and three-component Ugi reactions involving convertible isocyanides and unexplored pyrrole-containing β-chlorovinylaldehyde, a small library of 20 bisamides with unusual behavior in post-Ugi transformations was prepared and characterized.
Alexander V. Tsygankov   +8 more
doaj   +1 more source

Synthesis of Polyheterocyclic Pyrrolo[3,4-b]pyridin-5-ones via a One-Pot (Ugi-3CR/aza Diels-Alder/N-acylation/aromatization/SN2) Process. A Suitable Alternative towards Novel Aza-Analogues of Falipamil

open access: yesMolecules, 2018
We describe the one-pot synthesis of twenty polyheterocyclic pyrrolo[3,4-b]pyridin-5-ones via a cascade process (Ugi-3CR/aza Diels-Alder/N-acylation/aromatization) in 20 to 95% overall yields, as well as four pharmacologically promising analogues via an ...
Angel Zamudio-Medina   +8 more
doaj   +1 more source

Dilepton anisotropy from $p + Be$ and $Ca + Ca$ collisions at BEVALAC energies [PDF]

open access: yes, 1996
A full calculation of lepton-pair angular characteristics is carried out for $e^+e^-$ pairs created in $p + Be$ and $Ca + Ca$ collisions from 1.0 to 2.1 GeV/A.
Agakichiev   +19 more
core   +3 more sources

Ethyl({[acryloyl(furan-2-ylmethyl)amino]acetyl}amino)acetate

open access: yesMolbank, 2017
Ethyl({[acryloyl(furan-2-ylmethyl)amino]acetyl}amino)acetate was synthesized via Ugi four component (4C) reaction at ambient temperature. The protocol employs a reaction between formaldehyde, furfurylamine, acrylic acid, and ethyl 2-isocyanoacetate.
Shimoga D. Ganesh   +3 more
doaj   +1 more source

Computer-assisted design of organic synthesis [PDF]

open access: yes
The computer programs to design synthetic pathways of organic compounds have been utilized throughout the world since the first system was reported by Corey in 1969, and the LHASA was reported in1972 to become the predominant system.
Kaminaka, H.
core   +1 more source

Combining the Ugi-azide multicomponent reaction and rhodium(III)-catalyzed annulation for the synthesis of tetrazole-isoquinolone/pyridone hybrids

open access: yesBeilstein Journal of Organic Chemistry, 2019
An efficient sequence based on the Ugi-azide reaction and rhodium(III)-catalyzed intermolecular annulation has been established for the preparation of tetrazole-isoquinolone/pyridone hybrids.
Gerardo M. Ojeda   +6 more
doaj   +1 more source

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