esters has been reported. Herein, our attempts towards scabrosin diacetate (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.
Epipolythiodiketopiperazine(ETP)
天然产品家族由200多个成员组成,成员具有广泛的结构和
生物活性。最近,由6–5–6–5–6-6员ETP组成的亚组受到了广泛关注,这导致了几个总的合成过程。尽管已经付出了所有努力来获得这些复杂的结构,但尚无关于scabrosin diacetate(1 a)及其相关
酯的合成的报道。这里,我们对scabrosin二
乙酸酯(尝试1)和haematocin(3)从开始二
酮哌嗪12作为晚期中间被呈现。可以从醛中以克(克)的形式方便地获得Diketopiperazine 12 a18和diketopiperazine 21,被设想为合成6–5–6–5–5–6员ETP的通用平台。