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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. 8, 1985, pp.1933-1942
Published online, 1st January, 1970■ On the Catalytic Reduction of Some 12-Spiro-derivatives of 8-Aza-11-oxasteroids
Published online, 1st January, 1970
DOI: 10.3987/R-1985-08-1933
■ On the Catalytic Reduction of Some 12-Spiro-derivatives of 8-Aza-11-oxasteroids
Cosimo Altomare, Francesco Campabna, Angelo Carotti,* and Wayne E. Steinmetz
*Dipartimento Farmaco-Chimico, Università di Bari, Via Amendola 173, 70126 Bari, Italy
Abstract
The catalytic reduction over Pd on carbon of some 8-aza-11-oxo-gona- and D-homo-gona-1,3,5(10),6,13-pentaene derivatives 1, carrying either a barbituric or a 1,3-indandione moiety as the spira-substituent at C-12, is reported. Different spectral means, including proton-proton nuclear Overhauser effect (nOe) measurements, have been used to get structure elucidation. A detailed analysis of the 1H-NMR spectra at 400 MHz of some reduction products is also reported.
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