J 2022

Photochemistry of (Z)-Isovinylneoxanthobilirubic Acid Methyl Ester, a Bilirubin Dipyrrinone Subunit: Femtosecond Transient Absorption and Stimulated Raman Emission Spectroscopy

MADEA, Dominik, Taufiqueahmed Pirsaheb MUJAWAR, Aleš DVOŘÁK, Kateřina POSPÍŠILOVÁ, Lucie MUCHOVÁ et. al.

Basic information

Original name

Photochemistry of (Z)-Isovinylneoxanthobilirubic Acid Methyl Ester, a Bilirubin Dipyrrinone Subunit: Femtosecond Transient Absorption and Stimulated Raman Emission Spectroscopy

Authors

MADEA, Dominik (203 Czech Republic, belonging to the institution), Taufiqueahmed Pirsaheb MUJAWAR (356 India, belonging to the institution), Aleš DVOŘÁK, Kateřina POSPÍŠILOVÁ, Lucie MUCHOVÁ, Petra ČUBÁKOVÁ, Miroslav KLOZ, Jakub ŠVENDA (203 Czech Republic, belonging to the institution), Libor VÍTEK and Petr KLÁN (203 Czech Republic, guarantor, belonging to the institution)

Edition

Journal of Organic Chemistry, American Chemical Society, 2022, 0022-3263

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10401 Organic chemistry

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 3.600

RIV identification code

RIV/00216224:14310/22:00126178

Organization unit

Faculty of Science

UT WoS

000773458100083

Keywords in English

Alcohols; Molecular structure; Photooxidation; Quantum mechanics; Quantum yield

Tags

Tags

International impact, Reviewed
Změněno: 15/3/2023 22:10, Mgr. Michaela Hylsová, Ph.D.

Abstract

V originále

Bilirubin (BR) is an essential metabolite formed by the catabolism of heme. Phototherapy with blue-green light can be applied to reduce high concentrations of BR in blood and is used especially in the neonatal period. In this work, we studied the photochemistry of (Z)-isovinylneoxanthobilirubic acid methyl ester, a dipyrrinone subunit of BR, by steady-state absorption, femtosecond transient absorption, and stimulated Raman spectroscopies. Both the (Z)- and (E)-configurational isomers of isovinylneoxanthobilirubic acid undergo wavelength-dependent and reversible photoisomerization. The isomerization from the excited singlet state is ultrafast (the lifetimes of (Z)- and (E)-isomers were found to be similar to 0.9 and 0.1 ps, respectively), and its efficiencies increase with increased photon energy. In addition, we studied sensitized photooxidation of the dipyrrinone subunit by singlet oxygen that leads to the formation of propentdyopents. Biological activities of these compounds, namely, effects on the superoxide production, lipoperoxidation, and tricarboxylic acid cycle metabolism, were also studied. Finally, different photochemical and biological properties of this BR subunit and its structural analogue, (Z)-vinylneoxanthobilirubic acid methyl ester, studied before, are discussed.

Links

EF16_025/0007381, research and development project
Name: Preklinická progrese nových organických sloučenin s cílenou biologickou aktivitou
EF17_043/0009632, research and development project
Name: CETOCOEN Excellence
LM2018121, research and development project
Name: Výzkumná infrastruktura RECETOX (Acronym: RECETOX RI)
Investor: Ministry of Education, Youth and Sports of the CR, RECETOX RI
NV18-07-00342, research and development project
Name: Studium degradačních produktů bilirubinu vznikajících při fototerapii novorozenecké žloutenky
Investor: Ministry of Health of the CR