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Obituary
Zenichi Yoshida (1925-2023)
Zenichi Yoshida (1925-2023)
Professor. Zenichi Yoshida,
a member of the Honorary Advisors of HETEROCYCLES (1975-1998),
has passed away on May 4, 2023 at the age of 97.
I deeply express my regret over his death.
Kunio Ogasawara
Editor
May 11, 2023
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Communication | Regular issue | Vol 23, No. 5, 1985, pp.1111-1117
Published online, 1st January, 1970■ Total Synthesis of (±)-α-Cyclopiazonic Acid
Published online, 1st January, 1970
DOI: 10.3987/R-1985-05-1111
■ Total Synthesis of (±)-α-Cyclopiazonic Acid
Hideaki Muratake and Mitsutaka Natsume*
*Research Foundation Itsuu Laboratory, 2-28-10 Tamagawa, Setagaya-ku, Tokyo 158, Japan
Abstract
(±)-α-Cyclopiazonic acid (2) was synthesized from 1-methoxycarbonyl-4-(3-oxo-1-butyl)indol (1) by way of 17, 18, and 19, using a reaction of MeLi with a pyrroline derivative 33 in the presence of BF3·Et2O.
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