Synthesis of Phaitanthrin E and Tryptanthrin through Amination/Cyclization Cascade
作者:Takumi Abe、Masaru Terasaki
DOI:10.1002/hlca.201700284
日期:2018.2
E. The synthesis not only allows assessment of antiproliferativeactivity, but also affords experimental support for the hypothetical biosynthetic pathway of phaitanthrin E. The resulting phaitanthrin E derivatives were evaluated for in vitro antiproliferativeactivity against human colorectal cancer cells (DLD‐1). The biogenetic intermediate of phaitanthrin E showed higher antiproliferative activity
Phaitanthrin E是由3-吲哚甲酸甲酯和邻氨基苯甲酸甲酯或邻氨基苯甲酸以酯基为活化基团仿生合成的。该反应通过一锅程序中NCS介导的脱吲哚胺/ C(2)胺化/ Et 3 N促进的芳构化和环化过程的NCS介导的脱芳香化作用/ TFA催化的质子化过程进行。该方法能够将简单的生物质材料转化为紫杉醇E。该合成方法不仅可以评估抗增殖活性,而且还可以为紫杉醇E的假设生物合成途径提供实验支持。对所得的紫杉醇E衍生物进行了体外评估。对人结肠直肠癌细胞(DLD-1)的抗增殖活性。菲坦菌素E的生物遗传中间体显示出比天然产物菲坦菌素E更高的抗增殖活性。此外,使用醛基作为活化基团,由吲哚-3-甲醛和邻氨基苯甲酸甲酯也可以完成简明的色胺酮合成。
Synthesis of (–)-Phaitanthrin D and (+)-Dihydropyrroloindoloquinazolinone
作者:Narshinha Argade、Sagar Vaidya
DOI:10.1055/s-0035-1562098
日期:——
Abstract The synthesis of (–)-phaitanthrin D and (+)-dihydropyrroloindoloquinazolinone are reported starting from the corresponding especially designed enantiomerically pure pivotal anthranilamide based building blocks using HMDS/ZnCl2 and NaHMDS. The synthesis of (–)-phaitanthrin D and (+)-dihydropyrroloindoloquinazolinone are reported starting from the corresponding especially designed enantiomerically
A one-pot synthesis of phaitanthrin E starting from methyl indole-3-carboxylate and isatoic anhydride through intermolecular condensation/intramolecular aryl C-H amination cascade was developed.