3-Chloropyridazine-6-carboxylic acid hydrazide (5) was synthesized by employing hydrazine monohydrate and methyl levulinate as starting materials through five steps, including hydrozinolysis. Selective hydrazinolysis of 3, 6-substituted pyridazines was investigated.
[EN] 2-NITROIMIDAZOLE DERIVATIVE, PRODUCTION THEREOF, AND RADIOSENSITIZER CONTAINING THE SAME AS ACTIVE INGREDIENT
申请人:POLA CHEMICAL INDUSTRIES, INC.
公开号:WO1991011440A1
公开(公告)日:1991-08-08
(EN) A 2-nitroimidazole derivative represented by general formula (I) and a radiosensitizer containing the same as the active ingredient, wherein R1, R2 and R3 may be the same or different from each other and each represents hydrogen or acyl. This compound (I) has such an excellent radiosensitizing effect and high safety that the radiosensitizer containing the same is remarkably useful in the radiotherapy of cancers.(FR) Sont décrits un dérivé de 2-nitroimidazole représenté par la formule générale (I), ainsi qu'un agent radiosensibilisant le renfermant comme principe actif. Dans la formule précitée, R1, R2 et R3 peuvent être identiques ou différents et chacun représente hydrogène ou acyle. Ce composé (I) présente un excellent effet radiosensibilisant et une sécurité élevée tels que l'agent radiosensibilisant le contenant est remarquablement utile dans la radiothérapie des cancers.
2-nitroimidazole derivative, production thereof, and radiosensitizer
申请人:Pola Chemical Industries, Inc.
公开号:US05270330A1
公开(公告)日:1993-12-14
The present invention relates to a 2-nitroimidazole derivative represented by the following general formula (I): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 may be the same or different from each other and mean individually a hydrogen atom or an acyl group, and a radiosensitizer containing the same. The compound (I) according to this invention has an excellent radiosensitizing effect and high safety, so that a radiosensitizer containing the same is remarkably useful in the radiotherapy of cancers.
To provide a pharmaceutical composition which can enhance the storage stability of 1-(1-hydroxymethyl-2,3-dihydroxypropyloxymethyl)-2-nitroimidazole without impairing the effect of the compound.
The pharmaceutical composition includes 1-(1-hydroxymethyl-2,3-dihydroxypropyloxymethyl)-2-nitroimidazole, which is represented by formula (1) :
and a compound having chelating ability.