121st General Meeting of the KCS

Type Poster Presentation
Area Organic Chemistry
Room No. Event Hall
Time 4월 19일 (목요일) 11:00~12:30
Code ORGN.P-489
Subject Total Synthesis of (-)-Alloaristoteline
Authors jang yeop kim, Tae-Hong Jeon, Cheon-Gyu Cho*
Department of Chemistry, Hanyang University, Korea
Abstract

Recently, we have demonstrated ene-hydrazides prepared from enol triflates in regiochemically defined form may undergo Fischer indolization reactions with no regiochemical scrambling. This conceptually new synthetic strategy has been successfully applied to the total syntheses of (+)-aspidospermidine and (-)-tabersonine. Toward further development of our new strategy, we have envisaged a new synthetic route to (-)-alloaristoteline, a highly strained aristotelia alkaloid. In this new program, we envisioned enol triflate 1 could be prepared from the corresponding enone by a Michael addition of a Gilman reagent followed by an in-situ triflation. Subsequent C-N coupling with phenyl hydrazide would afford the key intermediate ene-hydrazide 2. Regioselective Fischer indolization would furnish indole 3, the main skeleton of (-)-alloaristoteline. Presented herein would be our progress toward the synthesis of (-)-alloaristoteline.

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