申请人:Stiftung Deutsches Krebsforschungszentrum
公开号:US04377687A1
公开(公告)日:1983-03-22
This invention relates to compounds having the formula: ##STR1## wherein R.sub.1 and R.sub.2 are selected from the group consisting of hydrogen, acyl, trifluoroacetyl, straight chained and branched alkyl groups with up to 6 carbon atoms, such alkyl groups with up to 3 substituents selected from the group consisting of OH, OSO.sub.2 CH.sub.3, COOH, COOR, CONH.sub.2 and Hal, where R is an alkyl group with up to 6 carbon atoms, and R.sub.1 and R.sub.2 together form a heterocyclic ring containing 4 to 6 carbon atoms and optionally further heteroatoms and such rings with up to 3 substituents selected from the group consisting of lower alkyl, OH, COOH, COOR, CONH.sub.2, where R has the above meaning, the chloroethyl nitrosoureido group and Hal, and Hal is selected from the group consisting of chlorine and fluorine, which heterocyclic ring is not the para-methyl piperazine group, said nitroso ureas having a tumor inhibiting effect. This invention also related to a method of inhibiting transplanted tumors which comprises treating a tumor-afflicted subject with one of the foregoing 1,3 - disubstituted nitroso ureas. It also involves a method of preparing such new compounds by reacting N-(2-halogenethyl)-N-nitrosocarbamoylazide with hydrazine or a monocyclic N-amino heterocyclic or their derivatives.
本发明涉及具有以下结构式的化合物:##STR1## 其中R.sub.1和R.sub.2选自羟基、酰基、三氟乙酰基、直链和支链烷基,其碳原子数最多为6,这种烷基还可以有最多3个取代基,所述取代基选自羟基、OSO.sub.2 CH.sub.3、COOH、COOR、CONH.sub.2和Hal,其中R是碳原子数最多为6的烷基,而R.sub.1和R.sub.2一起形成含有4到6个碳原子的杂环环,可选地还含有其他杂原子,这种环还可以有最多3个取代基,所述取代基选自较低的烷基、羟基、COOH、COOR、CONH.sub.2,其中R具有上述含义,氯乙基亚硝基脲基团和Hal,而Hal选自氯和氟,所述杂环环不是对甲苯基哌嗪基团,这些亚硝基脲具有抑制肿瘤的作用。本发明还涉及一种抑制移植肿瘤的方法,该方法包括用上述1,3-二取代亚硝基脲之一治疗患有肿瘤的受试者。它还涉及一种制备这种新化合物的方法,该方法通过将N-(2-卤乙基)-N-亚硝基甲酰肼与肼或单环N-氨基杂环或其衍生物反应。