We achieved the total synthesis of the histone deacetylase inhibitor spiruchostatin A, as the prelude to the preparation of a combinatorial library of its analogues. Two key reactions were an asymmetric acetate aldol reaction using a Zr-enolate and macrolactonization Using the Shiina method. (c) 2005 Published by Elsevier Ltd.
We achieved the total synthesis of the histone deacetylase inhibitor spiruchostatin A, as the prelude to the preparation of a combinatorial library of its analogues. Two key reactions were an asymmetric acetate aldol reaction using a Zr-enolate and macrolactonization Using the Shiina method. (c) 2005 Published by Elsevier Ltd.
Total synthesis of cyclodepsipeptide spiruchostatin A on silyl-linked polymer-support
作者:Masahito Yoshida、Ken-ichi Sasahara、Takayuki Doi
DOI:10.1016/j.tet.2015.07.064
日期:2015.10
Solid-phase totalsynthesis of cyclodepsipeptide spiruchostatin A (1) has been achieved. Initially, immobilization of the Boc-d-Val-statine derivative 3 via the hindered β-hydroxy group was efficiently achieved using polymer-supported silyl triflate. Subsequently, the peptide chain was successfully extended on the polymer-support to yield the tetrapeptide cyclization precursor 2 with high purity.
固相合成环二肽spiruchostatin A(1)。最初,通过受阻的β-羟基有效地实现了Boc - d -Val-他汀衍生物3的固定化,这是通过使用聚合物负载的三氟甲磺酸甲硅烷基酯来实现的。随后,肽链成功地在聚合物载体上延伸,以产生具有高纯度的四肽环化前体2。2-甲基-6-硝基苯甲酸酐(MNBA)介导的2的大内酯化在聚合物载体上顺利进行,以提供大内酯12。最后,从聚合物载体上释放大内酯,然后原位形成二硫键,从而提供了螺旋藻抑素A(1),总收益率为17%。