2274-08-0Relevant articles and documents
Involvement of a cytochrome P450 system in microsomal debromination of α-(bromisovaleryl)urea
Oka, Koji,Kitamura, Shigeyuki,Tatsumi, Kiyoshi
, p. 930 - 932 (1996)
The reductive debromination of a hypnotic, (α-bromisovaleryl)urea to (3-methylbutyryl)urea by rat liver microsomes was studied. Pretreatment of rats with cytochrome P450 inducers such as phenobarbitone, 3-methylcholanthrene, acetone and pregnenolone-16α-carbonitrile enhanced the debromination of (α-bromisovaleryl)urea by liver microsomes. Microsomal debromination was inhibited by cytochrome P450 inhibitors such as metyrapone, α-naphthoflavone, SKF 525-A and carbon monoxide. Microsomal debromination was enhanced by addition of NADPH-cytochrome P450 reductase and inhibited by addition of an antibody against the flavo enzyme to the liver microsomes. A reconstituted cytochrome P450 system containing NADPH-cytochrome P450 reductase, and cytochrome P450 1A1 or P450 2B1 exhibited debrominating activity toward the hypnotic. These results indicated that a cytochrome P450 system plays an essential role in the microsomal debromination of (α-bromisovaleryl)urea.
Dehalogenative Deuteration of Unactivated Alkyl Halides Using D2O as the Deuterium Source
Xia, Aiyou,Xie, Xin,Hu, Xiaoping,Xu, Wei,Liu, Yuanhong
, p. 13841 - 13857 (2019/10/17)
The general dehalogenation of alkyl halides with zinc using D2O or H2O as a deuterium or hydrogen donor has been developed. The method provides an efficient and economic protocol for deuterium-labeled derivatives with a wide substrate scope under mild reaction conditions. Mechanistic studies indicated that a radical process is involved for the formation of organozinc intermediates. The facile hydrolysis of the organozinc intermediates provides the driving force for this transformation.
ACYL-UREA DERIVATIVES AND USES THEREOF
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Page/Page column 44-45, (2009/03/07)
Novel acyl-urea containing compounds, processes of preparing same, compositions containing same and uses thereof in the treatment of neurological diseases and disorders such as epilepsy, neuropathic pain, bipolar disorder, status epilepticus, chemically-induced convulsions and/or seizure disorders, febrile convulsions conditions, metabolic disturbances and a sustenance withdrawal conditions, are provided. Also provided are uses of these and other acyl-urea containing compounds in the treatment of neurological diseases and disorders.