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Communication | Special issue | Vol 62, No. 1, 2004, pp.161-166
Published online, 27th October, 2003
DOI: 10.3987/COM-03-S(P)25
Total Syntheses of Natural Pseurotins A and F2 and Azaspirene

Shin-ya Aoki, Takahiro Oi, Kazuya Shimizu, Ryota Shiraki, Ken-ichi Takao, and Kin-ichi Tadano*

*Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi, Kohoku-ku Yokohama 223-8522, Japan

Abstract

Total syntheses of natural pseurotins A (1) and F2 (8-O-demethylpseurotin A) (2) and structurally related azaspirene (3), each possessing a novel heterospirocyclic system, i.e., 1-oxa-7-azaspiro[4.4]non-2-ene-4,6-dione skeleton, have been accomplished starting from D-glucose.