作者:Sergey V. Tsukanov、Lucas R. Marks、Daniel L. Comins
DOI:10.1021/acs.joc.6b01514
日期:2016.11.4
reaction of a 4-methoxytetrahydroquinoline is the key carbon–carbon bond-forming step that was used to establish the desired absolute stereochemistry at the C2 position of the target alkaloid. The synthesis features an allylation reaction with an N-acyliminium ion to set the C10 quaternary stereocenter, a mild dissolving-metal cleavage of hindered phenyl carbamates, and an aminoiodocyclization to form
First Total Synthesis of the Marine Alkaloids (±)-Fasicularin and (±)-Lepadiformine Based on Stereocontrolled Intramolecular Acylnitroso-Diels−Alder Reaction
作者:Hideki Abe、Sakae Aoyagi、Chihiro Kibayashi
DOI:10.1021/ja9939284
日期:2000.5.1
The first totalsynthesis of tricyclic marine alkaloids (±)-fasicularin (2) and (±)-lepadiformine (5) was accomplished. The key common strategic element for the synthesis is the stereocontrolled intramolecular hetero-Diels−Alder reaction of an N-acylnitroso moiety to an exocyclic diene with or without bromine substitution to control the syn-facial or anti-facial selectivity, respectively, leading to
A Convergent Stereoselective Synthesis of the Putative Structure of the Marine Alkaloid Lepadiformine via an Intramolecular Nitrone/1,3-Diene Dipolar Cycloaddition
作者:Kim M. Werner、Jesus M. de los Santos、Steven M. Weinreb、Maoyu Shang
DOI:10.1021/jo981897+
日期:1999.2.1
An Intramolecular Nitrone−Olefin Dipolar Cycloaddition-Based Approach to Total Synthesis of the Cylindricine and Lepadiformine Marine Alkaloids
作者:Kim M. Werner、Jesus M. de los Santos、Steven M. Weinreb、Maoyu Shang
DOI:10.1021/jo990266s
日期:1999.6.1
the marine alkaloid lepadiformine has been achieved using an intramolecular nitrone/1,3-diene dipolar cycloaddition as the key step. The synthesis began with sequential alkylations of acetone oxime to afford key intermediate oxime 30, which contains all of the carbons necessary to form the tricyclic skeleton of the alkaloids. Nitrone 40, available from oxime 30 by standard transformations, underwent