Tilivalline (1), a metabolite from Klebsiella, has been efficiently and stereoselectively synthesized from diphenyl phosphorazidate (DPPA), the 2-oxazoline 2, the L-proline derivative 5, and indole: the key step is a Mannich type intramolecular cyclization accompanied with simultaneous and completely stereoselective introduction of indole.
Tilivalline(1)是克雷伯氏菌的代谢物,已由
叠氮基
磷酸二苯酯(
DPPA),2-
恶唑啉2,
L-脯氨酸衍
生物5和
吲哚有效地和立体选择性地合成:关键步骤是曼尼希型分子内环化反应并伴随同时并完全立体选择性地引入
吲哚。