Synthesis and Biological Evaluation of Epidithio-, Epitetrathio-, and bis-(Methylthio)diketopiperazines: Synthetic Methodology, Enantioselective Total Synthesis of Epicoccin G, 8,8′-<i>epi</i>-<i>ent</i>-Rostratin B, Gliotoxin, Gliotoxin G, Emethallicin E, and Haematocin and Discovery of New Antiviral and Antimalarial Agents
作者:K. C. Nicolaou、Min Lu、Sotirios Totokotsopoulos、Philipp Heretsch、Denis Giguère、Ya-Ping Sun、David Sarlah、Thu H. Nguyen、Ian C. Wolf、Donald F. Smee、Craig W. Day、Selina Bopp、Elizabeth A. Winzeler
DOI:10.1021/ja308429f
日期:2012.10.17
An improved sulfenylation method for the preparation of epidithio-, epitetrathio-, and bis-(methylthio)diketopiperazines from diketopiperazines has been developed. Employing NaHMDS and related bases and elemental sulfur or bis[bis(trimethylsilyl)amino]trisulfide (23) in THF, the developed method was applied to the synthesis of a series of natural and designed molecules, including epicoccin G (1), 8
已经开发了一种用于从二酮哌嗪制备桥二硫、表四硫和双(甲硫基)二酮哌嗪的改进的亚磺酰化方法。在 THF 中使用 NaHMDS 和相关碱和元素硫或双[双(三甲基甲硅烷基)氨基]三硫化物 (23),将开发的方法应用于合成一系列天然和设计的分子,包括表球菌素 G (1)、8、 8'-epi-ent-rostratin B (2)、gliotoxin (3)、gliotoxin G (4)、emethallicin E (5) 和 heematocin (6)。对选定合成化合物的生物筛选导致发现了许多纳摩尔抗脊髓灰质炎病毒药物(即 46、2,2'-epi-46 和 61)和几种低微摩尔抗恶性疟原虫先导化合物(即 46、 2,2'-epi-46、58、61 和 1)。