290333-14-1Relevant articles and documents
Cyclization of free radicals at the C-7 position of ethyl indole-2-carboxylate derivatives: An entry to a new class of duocarmycin analogues
Al-Said, Naim H.,Shawakfeh, Khaled Q.,Abdullah, Wasim N.
, p. 1446 - 1457 (2007/10/03)
Aryl free-radicals generated at the C-7 position of ethyl indole-2-carboxylates bearing N-allyl and propargylic groups triggered intramolecular cyclizations to furnish a new class of Duocarmycin analogues, formal ethyl pyrrolo[3,2,1-ij]quinoline-2-carboxylate derivatives, through the less favorable 6-endo-trig cyclization mode.
Synthesis of the indole alkaloids meridianins from the tunicate Aplidium meridianum
Fresneda, Pilar M,Molina, Pedro,Bleda, Juan A
, p. 2355 - 2363 (2007/10/03)
The marine natural products meridianins A and C-E have been synthesized for the first time starting from the appropriate N-tosyl-3-acetylindole. A facile two-step conversion of N-tosyl-3-acetylindoles to the corresponding meridianins by treatment with dimethylformamide dimethylacetal and further cyclization of the resulting enaminone with aminoguanidine is described. This method has also been applied for the preparation of the 3-[(2-amino)pyrimidin-4-yl]-7-azaindole.
Synthetic studies towards the 2-aminopyrimidine alkaloids variolins and meridianins from marine origin
Fresneda, Pilar M.,Molina, Pedro,Delgado, Santiago,Bleda, Juan A.
, p. 4777 - 4780 (2007/10/03)
A nine-step synthesis of 9-amino-4-methoxypyrido[3',2':4,5]pyrrolo[1,2- c]pyrimidine, a tricyclic ring system present in the marine alkaloids variolins is described. The natural marine products meridianins C-E have been synthesized for the first time starting from N-protected 3-acylindoles. (C) 2000 Elsevier Science Ltd.