Structural Necessity of Indole C5-O-Substitution of seco-Duocarmycin Analogs for Their Cytotoxic Activity
作者:Taeyoung Choi、Eunsook Ma
DOI:10.3390/molecules15117971
日期:——
A series of racemic indole C5-O-substituted seco-cyclopropylindole (seco-CI) compounds 1-5 were prepared by coupling in the presence of EDCI of 1-(tert-butyloxycarbonyl)-3-(chloromethyl)indoline (seg-A) with 5-hydroxy-, 5-O-methylsulfonyl, 5-O-aminosulfonyl, 5-O-(N,N-dimethylaminosulfonyl)- and 5-O-benzyl-1H-indole-2-carboxylic acid as seg-B. Compounds 1-5 were tested for cytotoxic activity against four human cancer cell lines (COLO 205, SK-MEL-2, A549, and JEG-3) using a MTT assay. Compounds 2 and 3 with small sized sulfonyl substituents like 5-O-methylsulfonyl and 5-O-aminosulfonyl exhibit a similar level of activity as doxorubicin against all cell lines tested.
一系列对映体吲哚C5-O取代的seco-环丙基吲哚(seco-CI)化合物1-5是通过在EDCI存在下将1-(叔丁氧基羧基)-3-(氯甲基)吲哚(seg-A)与5-羟基、5-O-甲基磺酰、5-O-氨基磺酰、5-O-(N,N-二甲基氨基磺酰)和5-O-苄基-1H-吲哚-2-羧酸(作为seg-B)进行偶联制备的。使用MTT法测试了化合物1-5对四种人癌细胞系(COLO 205、SK-MEL-2、A549和JEG-3)的细胞毒活性。化合物2和3的磺酰取代基较小,如5-O-甲基磺酰和5-O-氨基磺酰,其对所有测试的细胞系表现出与多柔比星相似的活性水平。