One-pot enantioselective synthesis of (S)-spirobrassinin and non-natural (S)-methylspirobrassinin from amino acids using a turnip enzyme
作者:Kaori Ryu、Seikou Nakamura、Souichi Nakashima、Hisashi Matsuda
DOI:10.1007/s11418-020-01468-9
日期:2021.3
Abstract The enantioselective synthesis of (S)-(−)-spirobrassinin, which features a unique sulfur-containing spirooxindole skeleton, was achieved by focusing on the phytoalexin generation in Brassicaceae plants. Specifically, (S)-(−)-spirobrassinin was obtained in a one-pot fashion from l-tryptophan through a reaction involving S-spirocyclization with various turnip enzymes and constituents, i.e.,
摘要 通过着重于十字花科植物中植物抗毒素的产生,实现了具有独特的含硫螺氧杂吲哚骨架的(S)-(-)-spirobrassinin的对映选择性合成。具体地,通过涉及与各种萝卜酶和成分的S-螺环化的反应,即使用萝卜作为反应试剂,催化剂和方法,以1-锅方式从1-色氨酸以单锅方式获得(S)-(-)-螺油菜素。反应容器。令人惊讶地,这种策略也使新的非天然spirooxindole(的一锅对映选择性合成小号) - ( - ) -从5-甲基-5- methylspirobrassinin DL色氨酸。 图形摘要