Results 201 to 210 of about 18,931 (242)

Glycoconjugated tetrapyrrolic macrocycles

Journal of the American Chemical Society, 1989
Preparation de porphyrine ou de phtalocyanine metalliques substituees par le glucose a partir de la condensation du tetraacetyl β-D-glucose-2 benzaldehyde avec le ...
Philippe Maillard, Serge Gaspard, Jean Luc Guerquin-Kern, Michel Momenteau   +3 more
openaire   +1 more source

Syntheses of Tetrapyrroles

2003
This chapter addresses basic methodology that can be used to obtain tetrapyrrole macrocycles in the porphyrin and chlorin series from natural materials and some simple methods for the total chemical synthesis of typical pyrroles and porphyrins. The aim is to provide investigators with enough information to decide whether to take on the task of ...
openaire   +1 more source

(Invited) Charge Separation in Tetrapyrrole-Graphene and Tetrapyrrole-Slgo-Fullerene Hybrids

ECS Meeting Abstracts, 2013
Abstract not Available.
F. D'Souza, Chandra Bikram KC, Sushanta, K. Das, Kei Ohkubo, Shunichi Fukuzumi   +4 more
openaire   +1 more source

Heteroleptic Tetrapyrrole-Fused Dimeric and Trimeric Skeletons with Unusual Non-Frustrated Fluorescence.

Chemistry, 2016
Phthalocyanine (Pc) and porphyrin (Por) chromophores have been fused through the benzo[α]pyrazine moiety, resulting in unprecedented heteroleptic tetrapyrrole-fused dimers and trimers.
Yuehong Zhang, Juwon Oh, Kang Wang, Chao-yuan Chen, Wei-Ran Cao, K. Park, Dongho Kim, Jian-Zhuang Jiang   +7 more
semanticscholar   +1 more source

Atropisomerism in linear tetrapyrroles

Tetrahedron, 2002
Abstract Novel bilirubin and biliverdin congeners with propionic acids replaced by o -carboxyphenyl exhibit diastereomerism due to axial chirality about the carbon–carbon single bond linking the o -carboxyphenyl group to a pyrrole ring. Evidence for atropisomerism was found even in the monopyrrole precursor, ethyl 3,5-dimethyl-4-( o -carboxyphenyl ...
Stefan E Boiadjiev, David A Lightner
openaire   +1 more source

Biosynthesis of the Tetrapyrrole Ring System

2004
The pathways for the biosynthesis of chlorophyll and respiratory pigments of the heme type make use of the same series of reactions up to the protoporphyrin stage. Judicious use of isotopes, of cell preparations catalyzing some of the reactions involved and degradation techniques specially devised for the task, have allowed the brilliant elucidation of
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Tetrapyrroles:

2023
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Photochemistry of tetrapyrrole complexes

2007
The present article reviews the photochemical deactivation modes and properties of electronically excited metallotetrapyrroles. Of the wide variety of complexes possessing a tetrapyrrole ligand and their highly structured systems, the subject of this survey is mainly synthetic complexes of porphyrins, chlorins, corrins, phthalocyanines, and ...
openaire   +1 more source

Tetrapyrroles

2009
Martin J. Warren, Alison G. Smith
openaire   +1 more source

5-aminolevulinic acid improves salt tolerance mediated by regulation of tetrapyrrole and proline metabolism in Brassica napus L. seedlings under NaCl stress.

Plant physiology and biochemistry : PPB, 2018
J. Xiong, Hang Wang, Xiaoyu Tan, Chunlei Zhang, M. Naeem   +4 more
semanticscholar   +1 more source