3 article(s) from Rivera, Daniel G
Bioactive molecules containing a tetrazole, pyridone or isoquinolone ring.
Jump to Figure 1
Approaches for the synthesis of tetrazoles and isoquinolones and their interplay as designed in thi...
Jump to Scheme 1
Scope of the Ugi-azide-4CR/deprotection/acylation sequence. Ugi-azide-4CR conducted at the 2.0 mmol...
Jump to Scheme 2
Influence of substituents R and R2 on the reaction outcome. For compounds 4k–m the overall yield in...
Jump to Scheme 3
Influence of the alkyne and R1 substituent on the reaction outcome.
Jump to Scheme 4
Scope of acrylic, heterocyclic and ring-fused N-acylaminomethyl tetrazole substrates.
Jump to Scheme 5
Proposed reaction mechanism using substrates 1a and 3a.
Jump to Scheme 6
Beilstein J. Org. Chem. 2019, 15, 2447–2457, doi:10.3762/bjoc.15.237
Structures of natural steroids of A) animal and B) plant origin.
Synthesis of a steroidal β-lactam by Ugi reaction of a cholanic aldehyde .
Synthetic route to steroidal 2,5-diketopiperazines based on a diastereoselective Ugi-4CR with an an...
Multicomponent synthesis of a heterocycle–steroid hybrid using a ketosteroid as carbonyl component ....
Synthesis of peptidomimetic–steroid hybrids using the Ugi-4CR with spirostanic amines and carboxyli...
Synthesis of azasteroids using the Ugi-4CR with androstanic and pregnanic carboxylic acids .
Ugi-4CR-derived library of androstanic azasteroids with diverse substitution patterns at the phenyl...
Jump to Figure 2
Synthesis of 4-azacholestanes by an intramolecular Ugi-4C-3R .
Synthesis of amino acid–steroid hybrid by multiple Ugi-4CR using steroidal isocyanides .
Jump to Scheme 7
Synthesis of ecdysteroid derivatives by Ugi-4CR using a steroidal isocyanide .
Jump to Scheme 8
Stereoselective multicomponent synthesis of a steroid–tetrahydropyridine hybrid using a chiral bifu...
Jump to Scheme 9
Pd(II)-catalyzed three-component reaction with an alkynyl seco-cholestane .
Jump to Scheme 10
Multicomponent synthesis of steroid–thiazole hybrids from a steroidal ketone .
Jump to Scheme 11
Synthesis of cholanic pseudo-peptide derivatives by novel MCRs based on the reactivity of ynamide [37,38].
Jump to Scheme 12
Synthesis of steroid-fused pyrimidines and pyrimidones using the Biginelli-3CR [39,42,43].
Jump to Scheme 13
Synthesis of steroidal pyridopyrimidines by a reaction sequence comprising a 4CR followed by a post...
Jump to Scheme 14
Synthesis of steroid-fused pyrimidines by MCR of 2-hydroxymethylene-3-ketosteroids .
Jump to Scheme 15
Synthesis of steroid-fused naphthoquinolines by the Kozlov–Wang MCR using ketosteroids [50,51].
Jump to Scheme 16
Conjugation of steroids to carbohydrates and peptides by the Ugi-4CR [62,63].
Jump to Scheme 17
Solid-phase multicomponent conjugation of peptides to steroids by the Ugi-4CR .
Jump to Scheme 18
Solid-phase multicomponent conjugation of peptides to steroids by the Petasis-3CR .
Jump to Scheme 19
Synthesis of steroidal macrobicycles (cages) by multiple multicomponent macrocyclizations based on ...
Jump to Scheme 20
One-pot synthesis of steroidal cages by double Ugi-4CR-based macrocyclizations .
Jump to Scheme 21
Beilstein J. Org. Chem. 2019, 15, 1236–1256, doi:10.3762/bjoc.15.121
Schematic synthesis of polyfurfulyl alcohol (PFA) incorporating a prolyl peptide catalyst. AA: Amin...
Utilization of the Ugi four-component reaction (Ugi-4CR) for the synthesis of prolyl pseudo-peptide...
Analysis of the continuous-flow catalytic system producing γ-nitroaldehyde 5 with PFA-supported cat...
Beilstein J. Org. Chem. 2019, 15, 1210–1216, doi:10.3762/bjoc.15.118
Subscribe to our Latest Articles RSS Feed.
Register and get informed about new articles.
Follow the Beilstein-Institut