就其DT-心肌黄递酶底物活性,DNA还原烷基化作用,细胞抑制/细胞毒性活性和体内活性进行了研究,研究了由1-9系列代表的大量氮丙啶基醌。结果,关于以下方面进行了概括:DT-黄递酶底物设计,DT-黄递酶-细胞毒性定量结构-活性关系(QSAR)和DNA还原烷基化剂设计。在人重组DT-心肌黄递酶的底物特异性与人H460非小细胞肺癌细胞系中的细胞毒性之间存在饱和关系。这种关系的解释是,对于具有高DT-黄递酶底物特异性的底物,还原激活不再是速率限制。在吲哚和环戊[b]吲哚体系中,高DT-黄递质酶底物特异性是不希望的,因为其结果是失去了癌症的选择性,并增加了毒性。我们得出结论,这种类型的叠氮基醌应具有对DT-黄递酶的底物特异性(V(max)/ K(M))<10 x 10(-4)s(-1),以免毒性太大或非选择性。虽然系列1-9的细胞抑制活性和细胞毒性活性需要一些DNA烷基化,但烷基化过多会导致癌症选择
就其DT-心肌黄递酶底物活性,DNA还原烷基化作用,细胞抑制/细胞毒性活性和体内活性进行了研究,研究了由1-9系列代表的大量氮丙啶基醌。结果,关于以下方面进行了概括:DT-黄递酶底物设计,DT-黄递酶-细胞毒性定量结构-活性关系(QSAR)和DNA还原烷基化剂设计。在人重组DT-心肌黄递酶的底物特异性与人H460非小细胞肺癌细胞系中的细胞毒性之间存在饱和关系。这种关系的解释是,对于具有高DT-黄递酶底物特异性的底物,还原激活不再是速率限制。在吲哚和环戊[b]吲哚体系中,高DT-黄递质酶底物特异性是不希望的,因为其结果是失去了癌症的选择性,并增加了毒性。我们得出结论,这种类型的叠氮基醌应具有对DT-黄递酶的底物特异性(V(max)/ K(M))<10 x 10(-4)s(-1),以免毒性太大或非选择性。虽然系列1-9的细胞抑制活性和细胞毒性活性需要一些DNA烷基化,但烷基化过多会导致癌症选择
Cytotoxic N-unsubstituted indoles and cyclopent(b)indoles and method of making and using same
申请人:——
公开号:US20040006054A1
公开(公告)日:2004-01-08
The merits of N-unsubstituted indoles and cyclopent[b]indoles as DNA-directed reductive alkylating agents are described. These systems represent a significant departure from N-substituted and pyrrolo[1,2-a] fused systems such as the mitomycins and mitosenes. The cyclopent[b]indole—based aziridinylquinone, when bearing an acetate leaving group, was found to be cytotoxic and displayed significant in vivo activity against syngeneic tumor implants. This particular analogue was unexpectedly superior to the others studied, both in terms of high specificity for the activating enzyme DT-diaphorase and in high % DNA alkylation. Alkylation by a quinone methide intermediate as well as by the aziridinyl group were examined for crosslinking. The possible metabolites of the most active indole species were prepared and found to retain cytotoxicity, strongly suggesting that in vivo activity could also be sustained. The indole systems in the present invention display selectivity for melanoma and for non small cell lung, colon, renal, and prostate cancers when administered in an effective amount. The cancer specificity observed is believed to pertain to differential substrate specificity for DT-diaphorase.
Aziridinyl Quinone Antitumor Agents Based on Indoles and Cyclopent[<i>b</i>]indoles: Structure−Activity Relationships for Cytotoxicity and Antitumor Activity
作者:Edward B. Skibo、Chengguo Xing、Robert T. Dorr
DOI:10.1021/jm010085u
日期:2001.10.1
DT-diaphorase substrate activity, DNA reductive alkylation, cytostatic/cytotoxicactivity, and in vivo activity. As a result, generalizations have been made with respect with respect to the following: DT-diaphorase substrate design, DT-diaphorase-cytotoxicity quantitative structure-activityrelationship (QSAR), and DNA reductive alkylating agent design. A saturating relationship exists between the substrate
就其DT-心肌黄递酶底物活性,DNA还原烷基化作用,细胞抑制/细胞毒性活性和体内活性进行了研究,研究了由1-9系列代表的大量氮丙啶基醌。结果,关于以下方面进行了概括:DT-黄递酶底物设计,DT-黄递酶-细胞毒性定量结构-活性关系(QSAR)和DNA还原烷基化剂设计。在人重组DT-心肌黄递酶的底物特异性与人H460非小细胞肺癌细胞系中的细胞毒性之间存在饱和关系。这种关系的解释是,对于具有高DT-黄递酶底物特异性的底物,还原激活不再是速率限制。在吲哚和环戊[b]吲哚体系中,高DT-黄递质酶底物特异性是不希望的,因为其结果是失去了癌症的选择性,并增加了毒性。我们得出结论,这种类型的叠氮基醌应具有对DT-黄递酶的底物特异性(V(max)/ K(M))<10 x 10(-4)s(-1),以免毒性太大或非选择性。虽然系列1-9的细胞抑制活性和细胞毒性活性需要一些DNA烷基化,但烷基化过多会导致癌症选择