Thiolation of symmetrical and unsymmetrical diketopiperazines
作者:Bettina M. Ruff、Sabilla Zhong、Martin Nieger、Stefan Bräse
DOI:10.1039/c2ob06663g
日期:——
The introduction of sulfur units into a variety of symmetrical and unsymmetrical diketopiperazines (DKPs) is described. We investigated different thiolation methods utilizing several bases and electrophilic sulfur reagents, leading to monomethylthio-, bis(methylthio)-, and epithio-DKPs. Their formation proceeded diastereoselectively, facilitating the application in total syntheses of many thiodiketopiperazine (TDKP) natural products. Furthermore, possible side reactions as well as mechanistic studies and stereochemical structural assignments of the obtained products are given.