Lista de obras - Krystian Pyta - Dominio Público Uruguay

13C and 15N CP/MAS, 1H-15N SCT CP/MAS and FTIR spectroscopy as tools for qualitative detection of the presence of zwitterionic and non-ionic forms of ansa-macrolide 3-formylrifamycin SV and its derivatives in solid state.

artículo científico publicado en 2013

16-Membered Macrolide Lactone Derivatives Bearing a Triazole-Functionalized Arm at the Aglycone C13 Position as Antibacterial and Anticancer Agents.

artículo científico publicado en 2016

A new model of binding of rifampicin and its amino analogues as zwitterions to bacterial RNA polymerase

artículo científico publicado en 2012

Antifungal activity of alkyl and heterocyclic aza-derivatives of gossypol as well as their complexes with NaClO4 against Fusarium oxysporum f. sp. lupini.

artículo científico publicado en 2009

Biological Properties of Schiff Bases and Azo Derivatives of Phenols

Cascade reactions as efficient and universal tools for construction and modification of 6-, 5-, 4- and 3-membered sulfur heterocycles of biological relevance

Complexes of heterocyclic aza-derivatives of phytoalexin from cotton plant-gossypol with alkali metal cations and perchlorate anion studied by ESI mass spectrometric method in the positive and negative modes

article

Conversion of leucomycin-A3 antibiotic into novel triazole analogues via regio- and diastereoselective SN1′ substitution with allylic rearrangement and 1,3-dipolar cycloaddition of CuAAC type

article published in 2016

Fragmentation pathways of new aza derivatives of 16-membered macrolide antibiotic--analog of Josamycin investigated by ESI and FAB mass spectrometric methods.

artículo científico publicado en 2009

Impact of metal cation complexation and protonation on tautomeric and resonance forms of the oxaalkyl Schiff bases derived from 5-substituted salicylaldehyde and 2-hydroxy-1-naphthlaldehyde

Intramolecular proton transfer impact on antibacterial properties of ansamycin antibiotic rifampicin and its new amino analogues.

artículo científico publicado en 2012

MALDI‐TOF tandem mass spectrometric analysis of novel aza‐analogues of semi‐synthetic ansamycin antibiotic ‐ rifampicin ⬇️

artículo científico publicado el 1 de agosto de 2011

Redetermination of rifampicin pentahydrate revealing a zwitterionic form of the antibiotic

Regio- and Stereoselective Functionalization of 16-Membered Lactone Aglycone of Spiramycin via Cascade Strategy.

artículo científico publicado en 2015

Regioselective long-range proton transfer in new rifamycin antibiotics: a process in which crown ethers act as stronger Brønsted bases than amines.

artículo científico publicado en 2015

Solvates of Zwitterionic Rifampicin: Recurring Packing Motifs via Nonspecific Interactions

Specific Interactions between Rifamycin Antibiotics and Water Influencing Ability To Overcome Natural Cell Barriers and the Range of Antibacterial Potency

scientific article published on 10 September 2019

Spectroscopic and theoretical studies of the protonation of N-(5-nitrosalicylidene)-ethylamine

Structure and atropisomerisation of new diastereomeric gossypol Schiff bases with (R)-(+)-2-amino-3-benzyloxy-1-propanol studied by NMR, ECD and DFT methods

Structure and evaluation of antibacterial and antitubercular properties of new basic and heterocyclic 3-formylrifamycin SV derivatives obtained via ‘click chemistry’ approach

article

Structure elucidation, complete NMR assignment and PM5 theoretical studies of new hydroxy-aminoalkyl-alpha,beta-unsaturated derivatives of the macrolide antibiotic josamycin.

artículo científico publicado en 2010

Structure of a new Schiff base of gossypol with 1-(3-aminopropyl)-2-pyrrolidinone studied by the X-ray, FT-IR, NMR, ESI-MS and PM5 methods

Structure-activity relationship studies of new rifamycins containing l-amino acid esters as inhibitors of bacterial RNA polymerases.

artículo científico publicado en 2016

Synthesis, Antibacterial, and Anticancer Evaluation of Novel Spiramycin-Like Conjugates Containing C(5) Triazole Arm.

artículo científico publicado en 2016

Synthesis, crystal structures and antibacterial activity studies of aza-derivatives of phytoalexin from cotton plant – gossypol

article

Synthesis, docking and antibacterial studies of more potent amine and hydrazone rifamycin congeners than rifampicin

scientific article published on 04 February 2019

Synthesis, structure and anticancer activity of new geldanamycin amine analogs containing C(17)- or C(20)- flexible and rigid arms as well as closed or open ansa-bridges

artículo científico publicado en 2020

Synthesis, structure and antimicrobial evaluation of a new gossypol triazole conjugates functionalized with aliphatic chains and benzyloxy groups

article

The effect of complexation of 3-formylrifamycin SV macrocyclic ether derivatives with metal cations and small nitrogen-containing organic molecules on antibacterial activity against S. aureus and S. epidermidis

scientific article published on 22 July 2015

The influence of protonation on molecular structure and physico-chemical properties of gossypol Schiff bases

artículo científico publicado en 2010

The mechanism of activation of amidobenzylidene ruthenium chelates - latent catalysts of olefin metathesis

artículo científico publicado en 2017

Transformation of josamycin in alkaline solution—intramolecular SN2 substitution or E1cB elimination and intramolecular Michael addition?

article

Lista de obras de Krystian Pyta

13C and 15N CP/MAS, 1H-15N SCT CP/MAS and FTIR spectroscopy as tools for qualitative detection of the presence of zwitterionic and non-ionic forms of ansa-macrolide 3-formylrifamycin SV and its derivatives in solid state.

16-Membered Macrolide Lactone Derivatives Bearing a Triazole-Functionalized Arm at the Aglycone C13 Position as Antibacterial and Anticancer Agents.

A new model of binding of rifampicin and its amino analogues as zwitterions to bacterial RNA polymerase

Antifungal activity of alkyl and heterocyclic aza-derivatives of gossypol as well as their complexes with NaClO4 against Fusarium oxysporum f. sp. lupini.

Biological Properties of Schiff Bases and Azo Derivatives of Phenols

Cascade reactions as efficient and universal tools for construction and modification of 6-, 5-, 4- and 3-membered sulfur heterocycles of biological relevance

Complexes of heterocyclic aza-derivatives of phytoalexin from cotton plant-gossypol with alkali metal cations and perchlorate anion studied by ESI mass spectrometric method in the positive and negative modes

Conversion of leucomycin-A3 antibiotic into novel triazole analogues via regio- and diastereoselective SN1′ substitution with allylic rearrangement and 1,3-dipolar cycloaddition of CuAAC type

Fragmentation pathways of new aza derivatives of 16-membered macrolide antibiotic--analog of Josamycin investigated by ESI and FAB mass spectrometric methods.

Impact of metal cation complexation and protonation on tautomeric and resonance forms of the oxaalkyl Schiff bases derived from 5-substituted salicylaldehyde and 2-hydroxy-1-naphthlaldehyde

Intramolecular proton transfer impact on antibacterial properties of ansamycin antibiotic rifampicin and its new amino analogues.

MALDI‐TOF tandem mass spectrometric analysis of novel aza‐analogues of semi‐synthetic ansamycin antibiotic ‐ rifampicin ⬇️

Redetermination of rifampicin pentahydrate revealing a zwitterionic form of the antibiotic

Regio- and Stereoselective Functionalization of 16-Membered Lactone Aglycone of Spiramycin via Cascade Strategy.

Regioselective long-range proton transfer in new rifamycin antibiotics: a process in which crown ethers act as stronger Brønsted bases than amines.

Solvates of Zwitterionic Rifampicin: Recurring Packing Motifs via Nonspecific Interactions

Specific Interactions between Rifamycin Antibiotics and Water Influencing Ability To Overcome Natural Cell Barriers and the Range of Antibacterial Potency

Spectroscopic and theoretical studies of the protonation of N-(5-nitrosalicylidene)-ethylamine

Structure and atropisomerisation of new diastereomeric gossypol Schiff bases with (R)-(+)-2-amino-3-benzyloxy-1-propanol studied by NMR, ECD and DFT methods

Structure and evaluation of antibacterial and antitubercular properties of new basic and heterocyclic 3-formylrifamycin SV derivatives obtained via ‘click chemistry’ approach

Structure elucidation, complete NMR assignment and PM5 theoretical studies of new hydroxy-aminoalkyl-alpha,beta-unsaturated derivatives of the macrolide antibiotic josamycin.

Structure of a new Schiff base of gossypol with 1-(3-aminopropyl)-2-pyrrolidinone studied by the X-ray, FT-IR, NMR, ESI-MS and PM5 methods

Structure-activity relationship studies of new rifamycins containing l-amino acid esters as inhibitors of bacterial RNA polymerases.

Synthesis, Antibacterial, and Anticancer Evaluation of Novel Spiramycin-Like Conjugates Containing C(5) Triazole Arm.

Synthesis, crystal structures and antibacterial activity studies of aza-derivatives of phytoalexin from cotton plant – gossypol

Synthesis, docking and antibacterial studies of more potent amine and hydrazone rifamycin congeners than rifampicin

Synthesis, structure and anticancer activity of new geldanamycin amine analogs containing C(17)- or C(20)- flexible and rigid arms as well as closed or open ansa-bridges

Synthesis, structure and antimicrobial evaluation of a new gossypol triazole conjugates functionalized with aliphatic chains and benzyloxy groups

The effect of complexation of 3-formylrifamycin SV macrocyclic ether derivatives with metal cations and small nitrogen-containing organic molecules on antibacterial activity against S. aureus and S. epidermidis

The influence of protonation on molecular structure and physico-chemical properties of gossypol Schiff bases

The mechanism of activation of amidobenzylidene ruthenium chelates - latent catalysts of olefin metathesis

Transformation of josamycin in alkaline solution—intramolecular SN2 substitution or E1cB elimination and intramolecular Michael addition?

Unexpected α,β-unsaturated products of reductive amination of the macrolide antibiotic josamycin

X-ray, FT-IR, ESI MS and PM5 studies of Schiff base of gossypol with allylamine and its complexes with alkali metal cations and perchlorate anion

X-ray, spectroscopic and computational studies of the tautomeric structure of a new hydrazone of 5-nitrosalicylaldehyde with indole-3-acetic hydrazide