Synthesis and pharmacological evaluation of a new class of 2-(2-aminothiazol-4-yl)-2-hydrazonoacetamido cephalosporins
摘要:
A series of 2-(2-aminothiazol-4-yl)-2-hydrazonoacetamido cephalosporins 1a-h was prepared. Whenever possible, E and Z isomers were isolated, and their relative stabilities and their interconversions were tested. The antibacterial activity was tested against Gram-positive and Gram-negative bacteria. For compound 1c, whose Z and E forms do not interconvert rapidly, the Z form was the more active one. Among the other compounds, for which the E form is the only stable one for practical purposes, compound 1a was the most active. When compared with cefuroxime and cefotaxime, compound 1a showed slightly lower antibacterial activity but good serum level and half-life values.
New Piperazine Compound and Use Thereof as a HCV Polymerase Inhibitor
申请人:Abe Hiroyuki
公开号:US20080081818A1
公开(公告)日:2008-04-03
The present invention relates to a compound represented by the following formula [I]
wherein each symbol is as defined in the specification, or a pharmaceutically acceptable salt thereof, or a solvate thereof and an anti-HCV agent and an HCV polymerase inhibitor containing this compound. The compound of the present invention shows an anti-HCV activity based on the HCV polymerase inhibitory activity, and useful as an agent for the prophylaxis or treatment of hepatitis C.
Thiazole, imidazole and oxazole compounds and treatments of disorders associated with protein aging
申请人:——
公开号:US20020022622A1
公开(公告)日:2002-02-21
Provided are, among other things, compounds of formula I or IA,
1
. Also provided are methods of treatment with such compounds.
提供的是公式I或IA,1的化合物,以及使用这些化合物进行治疗的方法。
Method for treating glaucoma IIB
申请人:——
公开号:US20020119970A1
公开(公告)日:2002-08-29
Provided is a method of decreasing intraocular pressure or improving ocular accommodation in an animal, including a human, comprising administering an intraocular pressure decreasing amount or ocular accommodation improving amount of a compound of the formula I or IA,
1
wherein J is oxygen, sulfur, or N—R
d
.
Inhibitors of 11-beta-hydroxy steroid dehydrogenase type 1
申请人:——
公开号:US20030130318A1
公开(公告)日:2003-07-10
The present invention relates to compounds with the formula (I)
1
and also to pharmaceutical compositions comprising the compounds, as well as to the use of the compounds in medicine and for the preparation of a medicament which acts on the human 11-&bgr;-hydroxysteroid dehydrogenase type 1 enzyme.
Cyclization of thiocyanomethylketone oximes with hydroxylamine hydrochloride and oxidation of 2-aminothiazole derivatives with peracids are shown to afford the same products, which can be formulated either as 2-imino-3-hydroxy-2,3-dihydrothiazolines or 2-aminothiazole N-oxides. Compounds of this type bearing at position 4 an acetic or α-oxyiminoacetic residue are useful synthons for highly active β-lactam