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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
Editor
May 11, 2023
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Communication | Regular issue | Vol 23, No. 8, 1985, pp.1869-1872
Published online, 1st January, 1970■ Structure and Stereochemistry of 4-Deacetoxy-10-epi-olguine, a New δ-Lactone from Hyptis oblongifolia Bentham (Labiatae)
Published online, 1st January, 1970
DOI: 10.3987/R-1985-08-1869
■ Structure and Stereochemistry of 4-Deacetoxy-10-epi-olguine, a New δ-Lactone from Hyptis oblongifolia Bentham (Labiatae)
Guillermo Delgado, Rogelio Pereda-Miranda, and Alfonso Romo de Vivar*
*Div. Estudios de Posgrado, Facultad de Química, Universidad Nacinal Autónoma, Circuito Exterior, Ciudad Universitaria, Coyoacán 04510, Mexico
Abstract
A minor secondary metabolite, 4-deacetoxy-10-epi-olguine, has been isolated from the aerial parts of Hyptis oblongifolia (Labiatae). Its structure has been elucidated as that represented by formula 1, based on spectral and crystallographic evidence.
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