The disclosure relates to a method for the synthesis of a compound of the following formula (I) in which: R1 and R2 are independently an N-protective group; R3 is a hydrogen atom, a C
1
-C
6
alkyl group, a C
1
-C
6
arylalkyl group, a C
2
-C
6
alkenyl group, or a alkoxycarbonylalkyl group; Y is a —C(HR4)- group in which R4 is a hydrogen atom, a C
1
-C
6
alkyl group, an aryl group, a C
1
-C
6
arylalkyl group, or a C
2
-C
6
alkenyl group; or an orthophenylene group.
Conformations of six N-methylated diketopiperazines in solution
作者:W. Radding、B. Donzel、N. Ueyama、M. Goodman
DOI:10.1021/ja00539a004
日期:1980.9
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.