HETEROCYCLES
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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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Note | Regular issue | Vol 48, No. 2, 1998, pp.329-334
Published online, 1st January, 1970■ Stereoselective Synthesis of Steroidal Spiroaminotriazine Thiones
Published online, 1st January, 1970
DOI: 10.3987/COM-97-8040
■ Stereoselective Synthesis of Steroidal Spiroaminotriazine Thiones
Shamsuzzaman,* Anwar Salim, and M. Khursheed Akram
*Department of Chemistry, Jamia Millia Islamia, New Delhi-110 025, India
Abstract
Stereoselective transformations of some steroidal ketone thiocarbohydrazones (4)-(6) in to the corresponding R-spiroaminotriazine thiones (7)-(9) by their oxidative cyclization with H2O2 at 0 °C are described.
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