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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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Paper | Regular issue | Vol 41, No. 9, 1995, pp.1959-1965
Published online, 1st January, 1970■ 6-Oxo-6a,12a-dehydro-α-toxicarol, a 6-Oxodehydrorotenone from the Roots of Derris oblonga Benth
Published online, 1st January, 1970
DOI: 10.3987/COM-95-7069
■ 6-Oxo-6a,12a-dehydro-α-toxicarol, a 6-Oxodehydrorotenone from the Roots of Derris oblonga Benth
Yun-Lian Lin and Yueh-Hsiung Kuo
*Department of Chemistry, National Taiwan University, Taipei, Taiwan, R.O.C.
Abstract
A 6-oxodehydrorotenone, 6-oxo-6a,12a-dehydro-α-toxicarol, together wih nineteen known compounds containing sugar, triterpenes, isoflavones, anthraquinones, rotenone, dehydrorotenones, 12a-hydroxyrotenones, coumestans, coumaronochromones and pterocarpen, were isolated from the roots of Derris oblonga, and characterized on the basis of spectral and chemical evidence.
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