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Total synthesis of (-)-agelastatin A. 2008

Takehiko Yoshimitsu, and Tatsunori Ino, and Tetsuaki Tanaka
Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan. yoshimit@phs.osaka-u.ac.jp

A new route to (-)-agelastatin A is reported. The requisite nitrogen functionalities of the agelastatin core have been installed by intramolecular aziridination of an azidoformate and subsequent regioselective azidation, leading to net trans-diamination of the double bond. The present synthesis also demonstrates two new protocols for the preparation of an imidazolidinone hemiaminal motif from an oxazolidinone intermediate which comprise sequential N-tert-butoxycarbonylation, urea formation, hydrolysis, and oxidative cyclization, and direct aminolysis and subsequent oxidative cyclization.

UI MeSH Term Description Entries
D007093 Imidazoles Compounds containing 1,3-diazole, a five membered aromatic ring containing two nitrogen atoms separated by one of the carbons. Chemically reduced ones include IMIDAZOLINES and IMIDAZOLIDINES. Distinguish from 1,2-diazole (PYRAZOLES).
D007659 Ketones Organic compounds containing a carbonyl group Ketone
D007769 Lactams Cyclic AMIDES formed from aminocarboxylic acids by the elimination of water. Lactims are the enol forms of lactams. Lactam,Lactim,Lactims
D009584 Nitrogen An element with the atomic symbol N, atomic number 7, and atomic weight [14.00643; 14.00728]. Nitrogen exists as a diatomic gas and makes up about 78% of the earth's atmosphere by volume. It is a constituent of proteins and nucleic acids and found in all living cells.
D003500 Cyclization Changing an open-chain hydrocarbon to a closed ring. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed) Cyclizations
D000470 Alkaloids Organic nitrogenous bases. Many alkaloids of medical importance occur in the animal and vegetable kingdoms, and some have been synthesized. (Grant & Hackh's Chemical Dictionary, 5th ed) Alkaloid,Plant Alkaloid,Plant Alkaloids,Alkaloid, Plant,Alkaloids, Plant
D023303 Oxazolidinones Derivatives of oxazolidin-2-one. They represent an important class of synthetic antibiotic agents. 1,3-Oxazolidin-2-one,Oxazolidin-2-one,Oxazolidinone,1,3-Oxazolidine-2-one,2-Oxazolidone,2-oxazolidinone,1,3 Oxazolidin 2 one,1,3 Oxazolidine 2 one,2 Oxazolidone,2 oxazolidinone,Oxazolidin 2 one

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