An Efficient Synthesis Strategy to the Core Structure of 6–5–6–5–6-Membered Epipolythiodiketopiperazines
摘要:
A concise route to the core structure 1 of 6-5-6-5-6-membered epipolythiodiketopiperazines is described. The strategy relies on construction of the pyrrolines by double nucleophilic opening of a bis(oxabicyclo[2.2.1]heptene) 2, obtained after bidirectional condensation of N,N'-diacetyldiketopiperazine (4) with aldehyde 3.
An Efficient Synthesis Strategy to the Core Structure of 6–5–6–5–6-Membered Epipolythiodiketopiperazines
作者:Hannes F. Zipfel、Erick M. Carreira
DOI:10.1021/ol500990f
日期:2014.6.6
A concise route to the core structure 1 of 6-5-6-5-6-membered epipolythiodiketopiperazines is described. The strategy relies on construction of the pyrrolines by double nucleophilic opening of a bis(oxabicyclo[2.2.1]heptene) 2, obtained after bidirectional condensation of N,N'-diacetyldiketopiperazine (4) with aldehyde 3.
A Unified Strategy to 6-5-6-5-6-Membered Epipolythiodiketopiperazines: Studies towards the Total Synthesis of Scabrosin Diacetate and Haematocin
作者:Hannes F. Zipfel、Erick M. Carreira
DOI:10.1002/chem.201500918
日期:2015.8.24
esters has been reported. Herein, our attempts towardsscabrosindiacetate (1 a) and haematocin (3) starting from diketopiperazine 12 a as a late‐stage intermediate are presented. Diketopiperazine 12 a can be conveniently accessed in multigram quantities from aldehyde 18 and diketopiperazine 21 and was envisioned to serve as a general platform for the synthesis of 6–5–6–5–6‐membered ETPs.