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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
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May 11, 2023
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Report | Regular issue | Vol 22, No. 8, 1984, pp.1741-1746
Published online, 1st January, 1970■ 1,2,3,4-Tetrahydro-1,2-diazepine Derivatives from Isoxazolo[3,4-d]pyridazin-7(6H)-ones
Published online, 1st January, 1970
DOI: 10.3987/R-1984-08-1741
■ 1,2,3,4-Tetrahydro-1,2-diazepine Derivatives from Isoxazolo[3,4-d]pyridazin-7(6H)-ones
Vittorio Dal Piaz,* Giovanna Ciciani, Annarella Costanzo, Gabriella Auzzi, and Stefano Chimichi
*Dipartimento di Scienze Farmaceutiche, Università di Firenze, Via Gino Capponi 9, I-50121 Firenze, Italy
Abstract
Treatment of isoxazolo[3,4-d]pyridazin-7(6H)-ones (2a-f) with alkali give rise to the new 6-cyano-2,3-disubstituted 1,2,3,4-tetrahydro-5H-1,2-diazepin-5-one derivatives (5a-f) through Michael type addition.
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