[EN] 2,3-DIHYDRO-6-NITROIMIDAZO (2,1-B) OXAZOLE COMPOUNDS FOR THE TREATMENT OF TUBERCULOSIS<br/>[FR] COMPOSES 2,3-DIHYDRO-6-NITROIMIDAZO (2,1-B) OXAZOLE POUR LE TRAITEMENT DE LA TUBERCULOSE
申请人:OTSUKA PHARMA CO LTD
公开号:WO2005042542A1
公开(公告)日:2005-05-12
The present invention provides a 2,3-dihydro-6-nitroimidazo[2,1-b]oxazole compound represented by the following general formula: (1)in the above formula (1), R1 represents a hydrogen atom or C1-C6 alkyl group, n represents an integer of 0 to 6, R1 and -(CH2)nR2 may form a spiro ring represented by the formula (30) below, together with the adjacent carbon atom (in the formula below, RRR represents a piperidyl group which may have substituents on the piperidine ring), (30)and R2 represents a benzothiazolyloxy group, quinolyloxy group, pyridyloxy group or the like. The present compound has an excellent bactericidal action against Mycobacterium tuberculosis, multi-drug-resistant Mycobacterium tuberculosis, and atypical acid-fast bacteria.
Process for the preparation of pure 3-acetylamino-anilines
申请人:Hoechst Aktiengesellschaft
公开号:US04540815A1
公开(公告)日:1985-09-10
Process for the preparation of pure 3-acetylaminoanilines of the general formula (1) ##STR1## in which R denotes a hydrogen atom or an alkoxy group with 1-4 carbon atoms, by reduction of 1,3-dinitrobenzene in an alkanol with 1-4 carbon atoms to the 1,3-diaminobenzene or by reaction of 2,4-dinitrochlorobenzene with sodium hydroxide in an alkanol with 1-4 carbon atoms and subsequent reduction to the 2,4-diaminoalkoxybenzene, and in each case subsequent monoacetylation in the alkanol mentioned to give the 1-amino-3-acetylamino-benzene or the 2-amino-4-acetylamino-alkoxy-benzene and isolation of the compound of the above formula (1) obtained in the alkanolic solution, which optionally contains water, which comprises carrying out the isolation by precipitation of the compound of the above formula (1), in the form of the hydrohalide, from the alkanolic solution by means of hydrogen halide or aqueous hydrogen halide acid and subsequent filtration.
Agents for promoting the proliferation or differentiation of stem cells or neural progenitor cells
申请人:Okawa Shigenori
公开号:US20090012081A1
公开(公告)日:2009-01-08
An agent for promoting the proliferation or differentiation of a stem cell and/or neural progenitor cell, comprising a compound represented by Formula:
wherein each of R
1
and R
2
is H, a hydrocarbon group or a heterocyclic group, or taken together with the adjacent carbon atom to form a ring, R
3
is H, a hydrocarbon group or a heterocyclic group, W is a group represented by Formula:
wherein Ring A is an optionally substituted benzene ring, Ring B is an optionally substituted 5- to 7-membered nitrogen-containing heterocyclic ring, R
4
is an acyl group having an aliphatic hydrocarbon group, which is substituted by an aromatic group and may have a further substitutent, or aromatic group, R
5
is H, C
1-6
alkyl or acyl, R
4c
is an aromatic group, an aliphatic hydrocarbon group or acyl, and
X is O or S;
Y is O, S or NH, Ring C is an optionally substituted benzene ring, or a salt or prodrug thereof is provided.
2,3-Dihydro-6-Nitroimidazo (2,1-b) Oxazole Compounds for the Treatment of Tuberculosis
申请人:Tsubouchi Hidetsugu
公开号:US20080119478A1
公开(公告)日:2008-05-22
The present invention provides a 2,3-dihydro-6-nitroimidazo[2,1-b]oxazole compound represented by the following general formula: (1) in the above formula (1), R1 represents a hydrogen atom or C1-C6 alkyl group, n represents an integer of 0 to 6, R1 and —(CH2)
n
R2 may form a spiro ring represented by the formula (30) below, together with the adjacent carbon atom (in the formula below, RRR represents a piperidyl group which may have substituents on the piperidine ring), (30) and R2 represents a benzothiazolyloxy group, quinolyloxy group, pyridyloxy group or the like. The present compound has an excellent bactericidal action against
Mycobacterium tuberculosis
, multi-drug-resistant
Mycobacterium tuberculosis
, and atypical acid-fast bacteria.
Verfahren zur Herstellung von reinen 3-Acetylaminoanilinen
申请人:HOECHST AKTIENGESELLSCHAFT
公开号:EP0142788A1
公开(公告)日:1985-05-29
Verfahren zur Herstellung reiner 3-Acetylamino-aniline der allgemeinen Formel (1)
in welcher R ein Wasserstoffatom oder eine Alkoxygruppe von 1-4 Kohlenstoffatomen bedeutet, durch Reduktion von 1,3-Dinitrobenzol in einem Alkanol von 1-4 Kohlenstoffatomen zum 1,3-Diaminobenzol bzw. durch Umsetzung von 2,4-Dinitrochlorbenzol mit Ätznatron in einem Alkanol mit 1-4 Kohlenstoffatomen und anschließende Reduktion zum 2,4 Diaminoalkoxybenzol, und jeweils anschließende Monoacetylierung in dem genannten Alkanol zum 1-Amino-3-acetylamino- benzol bzw. zum 2-Amino-4- acetylamino-alkoxy-benzol und Isolierung der in der gegebenenfalls Wasser enthaltenden alkanolischen Lösung angefallenen Verbindung der genannten Formel (1), dadurch gekennzeichnet, daß man die Isolierung durch Ausfällen der Verbindung der genannten Formel (1) aus der alkanolischen Lösung mittels Halogenwasserstoff oder wässriger Halogenwasserstoffsäure in Form des Hydrohalogenids und anschließende Filtration vornimmt.