14575-13-4Relevant articles and documents
Synthesis of Pyranocyclopentaindolines Representing the Western Sections of Janthitrem B, JBIR-137, and Shearinine G
Fresia, Marvin,Lindel, Thomas
supporting information, (2022/02/05)
The synthesis of the ABCD tetracyclic partial structures of the fungal indole diterpenes janthitrem B, JBIR-137, and shearinine G is reported. The route starts from 5-formylated indoline that is coupled to a dihydropyran moiety, followed by Prins cyclization. A diene was obtained that was oxygenated in a divergent manner. The hydroxylated tetracyclic western half of janthitrem B was obtained in eight steps and 10 % overall yield. We also share our experience with alternative approaches passing via alkynylated precursors. This includes the gold-catalyzed cycloisomerization of a 6-ethynyl-5-prenylindoline.
New method for synthesis of ketones by the reactions of 8-(acyloxy)quinolines with organoaluminum compounds
Tolstikov, G. A.,Valitov, F. Kh.,Kuchin, A. V.
, p. 1170 - 1175 (2007/10/02)
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