319493-07-7Relevant articles and documents
First total synthesis of eudistalbin A
Zhang, Pu Yong,Wang, Jun Lei,Wan, Sheng Biao,Jiang, Tao
, p. 889 - 891 (2010)
Eudistalbin A was isolated from marine tunicate eudistoma album and possess cytotoxic activity (ED50 50 value of 2.1 μmol/L using the metabolic assay MTT. All structures of new compounds were confirmed by 1H NMR, 13C NMR, HRMS and optical rotation.
Metal-Free Dearomatization: Direct Access to Spiroindol(en)ines in Batch and Continuous-Flow
Ranjan, Prabhat,Ojeda, Gerardo M.,Sharma, Upendra K.,Van der Eycken, Erik V.
supporting information, p. 2442 - 2446 (2019/01/29)
A metal-free, phosphine-catalyzed intramolecular “umpolung Michael addition” on alkynes to form spiroindol(en)ines is reported. This nucleophilic catalysis enables the formation of a wide scope of five- and six-membered spiroindol(en)ines in moderate to excellent yields in batch as well as under continuous-flow conditions. Triphenylphosphine-catalyzed nucleophilic activation of alkynes allows the exclusive formation of exo-product under mild reaction conditions.
An environmentally friendly protocol for oxidative halocyclization of tryptamine and tryptophol derivatives
Xu, Jun,Tong, Rongbiao
supporting information, p. 2952 - 2956 (2017/07/24)
An environmentally friendly and efficient protocol (KX/oxone) for oxidative halocyclization of tryptamine/tryptophol derivatives was developed and demonstrated with 28 examples and concise total synthesis of cyclotryptamine alkaloid protubonines A and B. The distinct advantage of this protocol over all previous methods is that no organic byproduct is generated from a halogenating agent or oxidant, thus greatly reducing the environmental impact of halocyclization and facilitating the post-reaction purification.