Antineoplastic Agents. 585. Isolation of<i>Bridelia ferruginea</i>Anticancer Podophyllotoxins and Synthesis of 4-Aza-podophyllotoxin Structural Modifications1
作者:George R. Pettit、Justin D. Searcy、Rui Tan、Gordon M. Cragg、Noeleen Melody、John C. Knight、Jean-Charles Chapuis
DOI:10.1021/acs.jnatprod.5b00873
日期:2016.3.25
β-peltatin-5-O-β-d-glucopyranoside (3a), and the indole neoechinulin (4). As an extension of previous podophyllotoxin research, SAR studies were undertaken focused on 4-aza-podophyllotoxin structural modifications. A number of such derivatives were synthesized following modifications to the A and E rings. Such structural modifications with alkyl and 4-fluorobenzyl substituents at the 4-aza position provided the
的陆生植物的细胞毒性组分土密麻鸭使用生物活性引导分级分离,它揭示了先前已知的脱氧鬼臼毒素(存在1),isopicrodeoxypodophyllotoxin(2),β-peltatin(3),β-peltatin -5- ö -β - d吡喃葡萄糖苷(图3a),和吲哚neoechinulin(4)。作为先前鬼臼毒素研究的扩展,SAR研究集中在4-氮杂鬼臼毒素的结构修饰上。在修饰A和E环之后,合成了许多这样的衍生物。在4-氮杂位上具有烷基和4-氟苄基取代基的这种结构修饰提供了针对一组六种人类癌细胞系和一种鼠类癌细胞的最有效的癌细胞生长抑制活性(GI 50 0.1至<0.03μg/ mL)线。还合成了几种对应于4'-去甲基化修饰的化合物,发现它们的效力明显较低。