A FACILE PREPARATION OF THIOL ESTERS FROM CARBOXYLIC ACIDS AND THIOLS
作者:Sunggak Kim、Sungbong Yang
DOI:10.1246/cl.1981.133
日期:1981.1.5
Thiolesters can be conveniently prepared by the reaction of carboxylic acids with thiols and 1-fluoro-2,4,6-trinitrobenzene in the presence of 4-dimethylaminopyridine. The thiolester formation is found to be very effective for simple carboxylic acids.
External preparation for skin diseases containing nitroimidazole
申请人:——
公开号:US20030092754A1
公开(公告)日:2003-05-15
An external preparation for skin disease which comprises a nitroimidazole derivative represented by the following formula (I):
1
wherein R
1
, R
3
and R
4
may be the same or different and represent a hydrogen atom, a nitro group, a lower alkyl group, a substituted lower alkyl group, a lower alkenyl group, or a substituted lower alkenyl group; and R
2
represents a hydrogen atom, a lower alkyl group, a substituted lower alkyl group and a lower alkenyl group or a substituted lower alkenyl group, provided that any one of R
1
, R
3
and R
4
is a nitro group.
[EN] COMPOSITIONS AND METHODS COMPRISING CAPURAMYCIN ANALOGUES<br/>[FR] COMPOSITIONS ET PROCÉDÉS COMPRENANT DES ANALOGUES DE LA CAPURAMYCINE
申请人:SEQUELLA INC
公开号:WO2009136965A1
公开(公告)日:2009-11-12
Methods and compositions for treating disease caused by infectious agents, particularly tuberculosis are provided. In particular, methods and compositions comprising substituted derivatives of capuramycin analogs for the treatment of infectious diseases are provided. Also provided are capuramycin analogue formulations comprising PEGylated compounds, including a PEGylated vitamin E derivative, liposomes and nanoparticle carriers. The invention provides methods and compositions comprising a capuramycin analogue and capuramycin analogues in combination with one or more other active agents.
A compound of the formula (I):
1
wherein R
1
represents C
1
-C
6
alkyl, amino (C
1
-C
6
alkyl)amino, di(C
1
-C
6
alkyl) amino or a nitrogen-containing saturated heterocyclic; R
2
and R
3
are the same or different and represent hydrogen or C
1
-C
6
alkyl; R
a
represents C
1
-C
6
alkyl or C
2
-C
6
alkenyl or together with R
2
represents a C
1
-C
3
alkylene; Arom represents aryl or heteroaryl; A represents a C
1
-C
6
alkylene; E represents a single bond, oxygen, sulfur or R
4
NR
4
—, wherein R
4
is hydrogen or C
1
-C
7
alkenoyl; X
1
and X
2
are the same or different and represent oxygen or sulfur; or a pharmacologically acceptable salt or ester thereof. The compound has superior acetylcholinesterase inhibitory action and selective serotonin reuptake inhibitory action, and is useful for treating or preventing Alzheimer's disease, depression, Huntington's chorea, Pick's disease, tardive dyskinesia, compulsive disorders or panic disorders.
The present invention relates to ester, ether and N-alkylcarbamoyl derivatives of compound (Ia) and pharmaceutically acceptable salts thereof. These compounds exhibit excellent antibacterial activity and are useful for the treatment or prevention of bacterial infections.
1
(wherein R
1
is a hydrogen atom or a methyl group; R
2
a
is a hydrogen atom, a protecting group for a hydroxy group, or a methyl group; R
3
is a hydrogen atom or a protecting group for a hydroxy group; R
4
a
is a hydrogen atom, a hydroxy group or a protected hydroxy group; R
5
is a hydrogen atom or a protecting group for a hydroxy group; and X is a methylene group or a sulfur atom). The invention also includes compounds which are related to the aforeidentified compounds.