Enzymatic oxidative coupling of monohalogenated tyrosine derivatives
摘要:
The regioselectivity of peroxidase-catalyzed oxidative phenolic coupling of monohalogenated tyrosine derivatives could be altered by the halogen substituent and the enzyme-substrate ratio. This ability to shift the coupling pattern (C-C vs. C-O) provides chemists with added versatility for synthetic applications. (C) 1998 Elsevier Science Ltd. All rights reserved.
Method for detecting conditions indicative of sepsis
申请人:——
公开号:US20030100122A1
公开(公告)日:2003-05-29
The disclosure describes a method for detecting conditions indicative of sepsis. In one embodiment of the invention, an increase in the level of 3-chlorotyrosine or 3-bromotyrosine from the normal level in a sample of body fluid or tissue is indicative of early sepsis or infection. In another embodiment of the invention, the level of 3-chlorotyrosine or 3-bromotyrosine is measured or monitored to determine the response to therapeutic treatment of the infective condition in which a reduction in the level that existed prior to the treatment is an early sign or indication that the treatment is working in vivo. In a preferred embodiment, the method of the invention is illustrated in a clinically relevant mouse model of sepsis.
Facile syntheses of 3-halo and mixed 3,5-dihalo analogues of N-acetyl-l-tyrosine via sulfonic acid-catalysed regioselective monohalogenation
作者:Pakorn Bovonsombat、Pratheep Khanthapura、Michael M. Krause、Juthamard Leykajarakul
DOI:10.1016/j.tetlet.2008.09.123
日期:2008.12
The combination of catalytic amounts of p-toluenesulfonic acid and 1 equiv of N-halosuccinimide afforded highly selective ring-halogenation of N-acetyl-L-tyrosine, furnishing either N-acetyl-3-halo-L-tyrosine analogues or mixed 3,5-dihalo derivatives in a one-pot reaction with excellent yields at room temperature. (C) 2008 Elsevier Ltd. All rights reserved.
METHOD FOR DETECTING SEPSIS
申请人:Washington University
公开号:EP1427845A2
公开(公告)日:2004-06-16
SELENO-COMPOUNDS AND THERAPEUTIC USES THEREOF
申请人:Schiesser Carl Herbert
公开号:US20140206658A1
公开(公告)日:2014-07-24
The present invention relates to compounds and compositions useful as antioxidants and in particular to selenium containing compounds of formula (I): wherein n is 1, 2, or 3; m is 2, 3, 4, or 5; and each R] is independently —(optionally substituted C1-C3 alkylene) p-OH, where p is 0 or 1, or a salt thereof. The invention also relates to the use of these seleno-compounds in the treatment of diseases or conditions associated with increased levels of oxidants produced by myeloperoxidase (MPO), such as for instance, atherosclerosis.