Results 111 to 120 of about 2,043,921 (203)

Conjugation of oligonucleotides with activated carbamate reagents prepared by the Ugi reaction for oligonucleotide library synthesis. [PDF]

RSC Chem Biol, 2022
Kita R, Osawa T, Obika S.
europepmc   +1 more source

Effective microwave-assisted approach to 1,2,3-triazolobenzodiazepinones via tandem Ugi reaction/catalyst-free intramolecular azide-alkyne cycloaddition. [PDF]

Beilstein J Org Chem, 2021
Mazur MO, Zhelavskyi OS, Zviagin EM, Shishkina SV, Musatov VI, Kolosov MA, Shvets EH, Andryushchenko AY, Chebanov VA.   +8 more
europepmc   +1 more source

New tricks of well-known aminoazoles in isocyanide-based multicomponent reactions and antibacterial activity of the compounds synthesized

Beilstein Journal of Organic Chemistry, 2017
The well-known aminoazoles, 3-amino-5-methylisoxazole and 5-amino-N-aryl-1H-pyrazole-4-carboxamides, were studied as an amine component in Ugi and Groebke–Blackburn–Bienaymé multicomponent reactions.
Maryna V. Murlykina, Maryna N. Kornet, Sergey M. Desenko, Svetlana V. Shishkina, Oleg V. Shishkin, Aleksander A. Brazhko, Vladimir I. Musatov, Erik V. Van der Eycken, Valentin A. Chebanov   +8 more
doaj   +1 more source

Tritylamine as an Ammonia Surrogate in the Ugi Reaction Provides Access to Unprecedented 5-Sulfamido Oxazoles Using Burgess-type Reagents. [PDF]

Org Lett, 2021
Bhela IP, Serafini M, Del Grosso E, Tron GC, Pirali T.   +4 more
europepmc   +1 more source

Silver(I) triflate-catalyzed post-Ugi synthesis of pyrazolodiazepines

Beilstein Journal of Organic Chemistry
A silver(I) triflate-catalyzed post-Ugi assembly of novel pyrazolo[1,5-a][1,4]diazepine scaffolds is reported offering high yields (up to 98%) under mild conditions.
Muhammad Hasan, Anatoly A. Peshkov, Syed Anis Ali Shah, Andrey Belyaev, Chang-Keun Lim, Shunyi Wang, Vsevolod A. Peshkov   +6 more
doaj   +1 more source

Ugi reaction in the synthesis of Janus dendrimers as nanocarriers of chlorambucil and ibuprofen

Results in Chemistry
The synthesis and characterization of Janus dendrimers conjugated with two drugs: chlorambucil and ibuprofen are reported. The dendrons by the Ugi reaction were obtained.
Israel Barajas-Mendoza, Teresa Ramírez-Ápan, Marcos Martínez-García   +2 more
doaj   +1 more source

Stabilization of Cyclic β‑Hairpins by Ugi-Reaction-Derived N‑Alkylated Peptides: The Quest for Functionalized β‑Turns

, 2019
A solid-phase approach including on-resin Ugi reactions was developed for the construction of β-hairpins. Various N-alkylated dipeptide fragments proved capable of aligning antiparallel β-sheets in a macrocyclic scaffold, thus serving as β-hairpin ...
Ludger A. Wessjohann, Aldrin V. Vasco (7340933), Daniel G. Rivera (1392718), Manuel G. Ricardo, Ludger A. Wessjohann (578796), Aldrin V. Vasco, Daniel G. Rivera, Manuel G. Ricardo (7340930)   +7 more
core   +1 more source

Ugi Multicomponent Reaction

Organic Syntheses, 2017
Dömling, Alexander, Boltjes, André, Liu, Haixia, Cao, Haiping, Baker-Tripp, Emma L   +4 more
openaire   +1 more source

Diastereoselective Ugi Reaction Without Chiral Amines: The Synthesis of Chiral Pyrroloketopiperazines

, 2007
The three-component Ugi reaction with chiral 2-(2-formyl-1H-pyrrol-1-yl)acetic acids prepared from natural l-aminoacids was investigated. The reaction opens a new route to chiral substituted pyrroloketopiperazines.
Reznichenko, Alexander L.; id_orcid, Balenkova, Elizabeth S., Valentine G. Nenajdenko, Elizabeth S. Balenkova, Alexander L. Reznichenko, Nenajdenko, Valentine G.   +5 more
core   +1 more source

Organocatalytic Double Ugi Reaction with Statistical Amplification of Product Enantiopurity: A Linker Cleavage Approach To Access Highly Enantiopure Ugi Products

Here we report an organocatalytic double Ugi reaction combining the enantioselective process and ee enhancement in a single operation to afford the chiral Ugi products with very high ee values.
Tong, Shuo, Wang, Mei-Xiang, Zhu, Jieping, Feng, Qi-Yun   +3 more
core   +1 more source