Superoxide dismutase mimetics. Part 2: synthesis and structure–Activity relationship of glyoxylate- and glyoxamide-Derived metalloporphyrins
摘要:
Novel glyoxylate- and glyoxamide-derived metalloporphyrins 26-58 were synthesized and evaluated as potential superoxide dismutase (SOD) mimetics. Relative to previously studied MnTBAP analogues, the glyoxylate-derived metalloporphyrins 32, 39, and 54 and glyoxamide-derived metalloporphyrin 49, exhibited enhanced activity in the SOD assay and the majority of the analogues in the current series showed enhanced inhibition of lipid peroxidation and catalase activity. (C) 2003 Elsevier Science Ltd. All rights reserved.
METHOD FOR PRODUCING (2S)-2-[(1H-PYRAZOL-1-YL)METHYL]-1,3-OXAZINANE DERIVATIVE
申请人:TAISHO PHARMACEUTICAL CO., LTD.
公开号:US20210147400A1
公开(公告)日:2021-05-20
Provided is a novel process for producing a (2S)-2-[(1H-pyrazol-1-yl)methyl]-1,3-oxazinane derivative.
More specifically, provided is a process for producing a (2S)-2-[(1H-pyrazol-1-yl)methyl]-1,3-oxazinane derivative represented by formula (1):
the process comprising reacting 3-aminopropan-1-ol with glyoxylic acid.
Triaryl-substituted pyrrolo-p-phenylene-linked porphyrin-fullerene dyads: Expanding the structural diversity of photoactive materials
作者:Artem A. Strelnikov、Dmitriy V. Androsov、Alexander S. Konev、Daniil A. Lukyanov、Alexander F. Khlebnikov、Alexey V. Povolotskiy、Kaoru Yamanouchi
DOI:10.1016/j.tet.2018.04.084
日期:2018.6
A protocol for the synthesis of pyrrolo-p-phenylene-linked porphyrin-fullerene dyads suitable as photoactive materials was developed. The sequence of aziridination – aziridine ring opening – 1,3-dipolar cycloaddition reactions enabled us to provide structural variability both to the porphyrin core and to pyrrole linker, which facilitates designing the electronic structure and morphological parameters
Substituierte Weinsäureester, Verfahren zu ihrer Herstellung und ihre Verwendung als Polymerisationsinitiatoren
申请人:BAYER AG
公开号:EP0016993A1
公开(公告)日:1980-10-15
Ether 1,2-disubstituierter Weinsäureester der Formel
worin die Substituenten die in Anspruch 1 angegebene Bedeutung haben, werden hergestellt durch Umsetzung von a-Ketoestern der Formeln
in Gegenwart eines unedlen Metalls, mit einer Organohalogenverbindung oder einem Chlororganosilan, -di- oder polysilan, -di oder polysiloxan, wobei die Organohalogenverbindung den Formeln
worin R5 und R6 die in Anspruch 1 angegebene Bedeutung haben und X für CI, Br oder J steht, entspricht. Die Verbindungen 11 eignen sich als Initiatoren für thermisch initiierbare Polymerisationen. Sie verleihen den polymerisationsfähigen Systemen bereits in geringer Konzentration hohe Reaktivität und liefern gut durchgehärtete Polymerisate.
A process for preparing an a-keto acid ester (oxo acid) of the formula:
wherein R1 is a hydrogen atom, aliphatic alkyl group of 1-6 carbon atoms, phenyl group or benzyl group, and R2 is an aliphatic alkyl group of 1-6 carbon atoms, which comprises causing an a-hydroxycarboxylic acid ester of the formula:
to react with molecular oxygen in a gaseous phase in the presence of copper phosphate, possibly, mounted on a solid carrier.
A lubricating oil composition containing in combination an acylating agent substituted with a polymer of an alkene with 6 to 40 carbon atoms and an acylating agent substituted with polyisobutylene provides improved viscometric properties for dispersants used in internal combustion engines.