67175-79-5Relevant articles and documents
Synthesis and pharmacological evaluation of dhβe analogues as neuronal nicotinic acetylcholine receptor antagonists
Jepsen, Tue Heesgaard,Jensen, Anders A.,Lund, Mads Henrik,Glibstrup, Emil,Kristensen, Jesper Langgaard
, p. 766 - 770 (2014)
Dihydro-β-erythroidine (DHβE) is a member of the Erythrina family of alkaloids and a potent competitive antagonist of the α4β2-subtype of the nicotinic acetylcholine receptors (nAChRs). Guided by an X-ray structure of DHβE in complex with an ACh binding p
An Efficient Palladium Mediated Synthesis of (±)-γ-Lycorane
Shao, Zhihui,Chen, Jingbo,Huang, Rong,Wang, Chenying,Li, Liang,Zhang, Hongbin
, p. 2228 - 2230 (2007/10/03)
An intramolecular approach incorporating a Michael addition followed by a palladium-mediated arylation of ketone towards the synthesis of Amaryllidaceae alkaloid (±)-γ-lycorane was reported.
Total synthesis of (±)-deethylibophyllidine: Studies of a Fischer indolization route and a successful approach via a Pummerer rearrangement/thionium ion-mediated indole cyclization
Bonjoch, Josep,Catena, Juanlo,Valls, Nativitat
, p. 7106 - 7115 (2007/10/03)
The total synthesis of (±)-deethylibophyllidine is described, proceeding in eight steps from 4-(methoxyphenyl)ethylamine in 5% overall yield (Scheme 6). In terms of sequential annulation, the strategy involves the following operations: E → DE → ABDE → ABCDE (Scheme 1). The key steps in the synthesis are the stereoselective formation of octahydroindol-6-ones by acid treatment of dihydroanisole derivatives, the regioselective Fischer indolization to obtain octahydropyrrolo[3,2-c]carbazoles, and the tandem process consisting of Pummerer rearrangement upon a β-amino sulfoxide and thionium ion cyclization upon a β-indole position of a 2,3-disubstituted indole to generate the quaternary spiro center. Attempts to effect the construction of the pentacyclic framework by means of Fischer indolization of the octahydropyrrolo[3,2,1-hi]indol-6-one resulted in failure (Scheme 2).