62368-29-0Relevant articles and documents
Synthesis of Pyranocyclopentaindolines Representing the Western Sections of Janthitrem B, JBIR-137, and Shearinine G
Fresia, Marvin,Lindel, Thomas
, (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.
Synthesis of linear tripeptides for right-hand segments of complestatin
Yamada, Yaeko,Akiba, Ai,Arima, Shiho,Okada, Chiharu,Yoshida, Kiminari,Itou, Fumihiro,Kai, Toshitsugu,Satou, Toshiko,Takeda, Kazuyoshi,Harigaya, Yoshihiro
, p. 1277 - 1290 (2007/10/03)
This paper concerns a synthetic study of the right-hand segment of complestatin, an inhibitor of gp120-CD4 receptor. The effective synthesis of four important precursors for the right-hand segment of complestatin is described. Two of them are the precurso
Synthesis of substituted benzoindolinothiazepines using 5- And 6-nitroindolines
Laconde,Depreux,Berthelot,Henichart
, p. 39 - 43 (2007/10/03)
The synthesis of benzoindolothiazepine compounds was investigated using Friedel-Crafts reactions conditions from indolines. The amine function of indolinic identity was protected to avoid an alkylation of this function by methyl iodide. It was observed that the treatment of the desired amines with commercially available methyl chlorosulfanoylbenzonate resulted in the formation of sulfonamide compounds. It was also observed that the cyclization of the carboxylic acid under Friedel-Crafts conditions resulted in the formation of the desired tetracycles.