Selective<i>Ortho</i>-Hydroxylation-Defluorination of 2-Fluorophenolates with a Bis(μ-oxo)dicopper(III) Species
作者:Joan Serrano-Plana、Isaac Garcia-Bosch、Ryosuke Miyake、Miquel Costas、Anna Company
DOI:10.1002/anie.201405060
日期:2014.9.1
The bis(μ‐oxo)dicopper(III) species [CuIII2(μ‐O)2(m‐XYLMeAN)]2+ (1) promotes the electrophilic ortho‐hydroxylation–defluorination of 2‐fluorophenolates to give the corresponding catechols, a reaction that is not accomplishable with a (η2:η2‐O2)dicopper(II) complex. Isotopic labeling studies show that the incoming oxygen atom originates from the bis(μ‐oxo) unit. Ortho‐hydroxylation–defluorination occurs
双(μ-氧代)双铜(III)物种[Cu III 2(μ-O)2(m-XYL MeAN)] 2+(1)促进2-氟酚盐的亲电子邻羟基化-脱氟,得到相应的儿茶酚,反应不是accomplishable用(η 2:η 2 -O 2)亚铜(II)络合物。同位素标记研究表明,进入的氧原子源自bis(μ-oxo)单元。在分子内竞争中,与其他邻位取代基(例如氯或溴)选择性发生邻羟基化-脱氟。
CEPHEM COMPOUND HAVING PYRIDINIUM GROUP
申请人:Nishitani Yasuhiro
公开号:US20140114060A1
公开(公告)日:2014-04-24
The present invention provides a novel compound which has a broad antibacterial spectrum and particularly exhibits a high antibacterial activity on β-lactamase-producing gram-negative bacteria. Specifically provided are: a compound represented by formula (I)
wherein the meaning of each symbol is as defined in the description, an amino-group-protected form of a type of the compound which has the amino group on a ring in a position-7 side chain, or a pharmaceutically acceptable salt of the compound or the amino-group-protected form; and a pharmaceutical composition containing the compound, the amino-group-protected form or the pharmaceutically acceptable salt.
Methods For Producing Dibromofluorobenzene Derivatives
申请人:Yoshikawa Seiji
公开号:US20080045753A1
公开(公告)日:2008-02-21
Disclosed is a method for producing a dibromofluorobenzene derivative (compound II) comprising a step 1 wherein a compound (I) represented by the general formula (I) below is reacted with a brominating agent in a solvent. (I) (II) (In the formulae, R
1
and R
2
independently represent a C
1-6
alkyl group.)
The present invention relates to 2-substituted cephem compounds of Formula (I) having a quaternary ammonium group on the 3-side chain, preferably together with a cathechol group, or pharmaceutically acceptable salts thereof, which exhibit potent antimicrobial spectrum against a variety of bacteria including Gram negative bacteria and/or Gram positive bacteria, corresponding pharmaceutical compositions, methods of making, treatment methods for bacterial infections or uses thereof.
NITROGEN-CONTAINING FUSED RING COMPOUND AND USE THEREOF
申请人:Japan Tobacco, Inc.
公开号:EP1820515A1
公开(公告)日:2007-08-22
A URAT1 activity inhibitor containing a nitrogen-containing fused ring compound represented by the following formula [1]:
wherein each symbol is as defined in the description. The present invention is useful for the prophylaxis or treatment of pathology showing involvement of uric acid, such as hyperuricemia, gouty tophus, acute gouty arthritis, chronic gouty arthritis, gouty kidney, urolithiasis, renal function disorder, coronary artery disease, ischemic heart disease and the like.