作者:Christian Alexander Mast、Stefan Eißler、Arvydas Stončius、Hans-Georg Stammler、Beate Neumann、Norbert Sewald
DOI:10.1002/chem.200500282
日期:2005.8.5
units A to D which correspond to the respective amino acids and hydroxy acids. A new synthetic route to unit A allows the selective generation of all four stereogenic centres by introducing two of them in a catalytic asymmetric dihydroxylation, followed by substrate-controlled diastereoselective reactions. The diol also serves as the epoxide precursor. This approach provides selective access to stereoisomers
隐藻霉素是具有四个逆合成单元A至D的环状双缩肽家族,其分别对应于氨基酸和羟基酸。一条新的合成路线通往A单元,通过在催化不对称二羟基化反应中引入两个立体异构中心,然后进行底物控制的非对映选择性反应,可以选择性生成所有四个立体异构中心。二醇还用作环氧化物前体。这种方法提供了对单元A的立体异构体(对映异构体,差向异构体)的选择性访问,以进行结构-活性关系研究。将单位A衍生物掺入隐藻素-1,隐藻素52和新型隐藻素差向异构体52中。