制备鬼臼毒素(I)的C-4羟基的合成酯。此外,使用四氢吡喃基鬼臼酚(XV)的二醇体系合成酯,该体系是通过用氢化锂铝还原四氢吡喃基鬼臼毒素的内酯环而制得的。I的六种化合物丙烯酸酯(IV),丙烯酸3,3-二甲基丙烯酸酯(V),苯氧乙酸酯(IX)和己二酸乙酯(XI)以及戊多酚(XIV)和四氢吡喃基戊二酚二甲磺酸酯(XVIII)具有明显的活性使用P-388淋巴细胞白血病筛查以3 mg / kg /天进行测试时。在相同剂量水平下测试时,没有一种酯的活性高于母体分子I的活性。
4α/β-acyloxypodophyllotoxin derivatives were synthesized, and were evaluated against the pre-third-instar larvae of B. mori, A. dissimilis and M. separate in vivo at the concentration of 1 mg ml−1, respectively. Among all derivatives, compounds 2 g, h and 4c, d showed more promising insecticidal activities than their precursors – podophyllotoxin and epipodophyllotoxin. Furthermore, derivatives 2 g, h and 4c, d exhibited
由于我们在基于天然产物杀虫剂的研究正在进行的工作,一些4α/β-acyloxypodophyllotoxin衍生物的合成,反对的预第三龄幼虫进行了评价家蚕,A. dissimilis和M.分开体内分别为1 mg ml -1的浓度。在所有衍生物中,化合物2 g,h和4c,d显示出比其前体鬼臼毒素和表鬼臼毒素更有希望的杀虫活性。此外,导数2 g,h和4c,d与前体鬼臼毒素和表鬼臼毒素相比,它们显示出更多的相对友好活性。该结果表明鬼臼毒素衍生物中的4β-酰氧基部分对于获得更有效的化合物是重要的。
Podophyllotoxin and Picropodophyllin.<sup>1</sup> I. Their Reduction by Lithium Aluminum Hydride
作者:Nathan L. Drake、Edward H. Price
DOI:10.1021/ja01145a068
日期:1951.1
Synthesis and cytotoxicity of hydrophobic esters of podophyllotoxins
作者:J.L. López-Pérez、E. del Olmo、B. de Pascual-Teresa、A. Abad、A. San Feliciano
DOI:10.1016/j.bmcl.2003.12.039
日期:2004.3
Diverse norbornenecarboxylate esters of podophyllotoxin and its epimers and diastereoisomers have been prepared through Diels-Alder cycloaddition by treating the dienophilic acrylates of cyclolignans with cyclopentadiene. Their cytotoxicities against several cancer cell lines have been evaluated and the results compared with those found for other lignan esters. Podophyllotoxin adducts showed a one-fold increase in activity when compared to the natural product. The preparation of more hydrophobic esters, which showed less cytotoxicity, demonstrated that this activity is not primarily due to the lipophilic factor, but mainly to the spatial arrangement of the bulky moiety, which could contribute to increase the binding to the target site. (C) 2003 Elsevier Ltd. All rights reserved.