19293-60-8Relevant academic research and scientific papers
A concise synthesis of cyclobrassinin and its analogues via a thiyl radical aromatic substitution
Zhong, Xin,Chen, Ning,Xu, Jiaxi
, p. 13549 - 13557 (2018/08/21)
A simple and concise approach for the synthesis of cyclobrassinin has been developed through a thiyl radical-mediated intramolecular aromatic substitution, with benzoyl peroxide as an efficient initiator and oxidant. The current method can also be utilized in the synthesis of 6 and 7-membered ring cyclobrassinin analogues in moderate to good yields. The transformation involves a formal radical 6 and 7-endo-trig cyclization of the corresponding dithiocarbamate derivatives, which were generated from indole-3-methanamines and tryptophan.
A novel palladium-catalyzed cyclization of indole phytoalexin brassinin and its 1-substituted derivatives
Budovska, Mariana
, p. 5575 - 5582 (2014/01/23)
A novel simple synthetic approach to spiroindoline phytoalexins and their derivatives has been developed. The spirocyclization of brassinin and its 1-substituted derivatives was achieved using palladium catalyst PdCl 2(CH3CN)2 in DMSO at 80°C in the presence of water, methanol or aniline.
New syntheses of indole phytoalexins and related compounds
Kutschy, Peter,Dzurilla, Milan,Takasugi, Mitsuo,Toeroek, Marcel,Achbergerova, Ingrid,Homzova, Renata,Racova, Maria
, p. 3549 - 3566 (2007/10/03)
Synthesis of indole phytoalexins brassinin, brassitin, cyclobrassinin and related compounds via 3-aminomethylindole and its 1-substituted derivatives obtained by nickel boride catalyzed reduction of corresponding aldoximes with sodium borohydride and via [1-(t-butoxycarbonyl)-indol-3-yl]methyl isothiocyanate, the first stable derivative of indol-3-ylmethyl isothiocyanate is described. Antifungal activity of the prepared compounds was examined by using the fungus Bipolaris leersiae by t.l.c. bioassay and quantitative screening was carried out with the selected compounds.
