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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 12, No. 12, 1979, pp.1559-1562
Published online, 1st January, 1970■ Calafatine, An Unusual Bisbenzylisoquinoline Alkaloid
Published online, 1st January, 1970
DOI: 10.3987/R-1979-12-1559
■ Calafatine, An Unusual Bisbenzylisoquinoline Alkaloid
Víctor Fajardo,* Alejandaro Urzúa, and Bruce K. Cassele
*Departmento de Química, Facultad de Ciencia, Universidad Técnica del Estado, Santiago 2, Chile
Abstract
Spectrometric and chemical evidence is presented that calafatine, an alkaloid from Berberis buxifolia, has structure 1. The substitution pattern on ring E is unique in isoquinoline alkaloids.
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