Pyranoindazoles and their use for the treatment of glaucoma
申请人:——
公开号:US20030171418A1
公开(公告)日:2003-09-11
Pyranoindazoles are disclosed. Also disclosed are methods for the lowering and controlling of normal or elevated intraocular pressure as well as a method for the treatment of glaucoma using compositions containing one or more of the compounds of the present invention.
PROCESS FOR PREPARING PYRANOINDAZOLE SEROTONERGIC RECEPTOR AGONISTS
申请人:CONROW Raymond E.
公开号:US20080033183A1
公开(公告)日:2008-02-07
Described are methods of making pyranoindazoles comprising reacting with a reducing agent a protected halohydrin comprising a secondary carbamate to form a pyranoindazole. In preferred embodiments the secondary carbamate is a benzyl carbamate. Also preferred are embodiments wherein the reacting is preceded by reacting a protected halohydrin with a first organometallic compound. The pyranoindazoles thus formed by the described methods are preferably pharmaceutically active products.
[EN] METHODS OF MAKING 1-(2-AMINOPROPYL)-6-HYDROXYINDAZOLE<br/>[FR] PROCEDES DE FABRICATION DE 1-(2-AMINOPROPYL)-6-HYDROXYINDAZOLE
申请人:ALCON INC
公开号:WO2002098861A1
公开(公告)日:2002-12-12
Methods of making 1-(2-aminopropyl)-6-hydroxyindazole are described. The method involves, in part, reacting 4-benzyloxy-2-(2-hydroxypropyl)aminobenzaldehyde with an organic or inorganic nitrite to form 4-benzyloxy-2-(2-hydroxypropyl)nitosaminobenzaldehyde, wich in turn is reacted with a reducing agent with concomitant cyclization to form 6-benzyloxy-1-(2-hydroxypropyl)indazole. The 6-benzyloxy-1-(2-hydroxypropyl)indazole can then be transformed into 1-(2-azidopropyl)-6-benzyloxyindazole which in turn can be converted to the final product.
Methods of making indazoles are described. The methods involved reacting an aromatic aldehyde with a nitrogen source to form a nitroso aromatic aldehyde. The nitroso aromatic aldehyde is reacted with a reducing agent to form an indazole which ultimately can be used to form desired indazoles which are preferably pharmaceutically active products. The process of the present invention further permits the formation of enantiomerically enriched or pure indazoles such as aminoalkyl indazoles.