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Obituary
Yoshito Kishi (1937-2023)
Yoshito Kishi (1937-2023)
Professor. Yoshito Kishi,
a member of the Honorary Editorial Associates of HETEROCYCLES,
has passed away on January 9, 2023 at the age of 85.
I deeply express my regret over his death.
Kunio Ogasawara
Editor
January 13, 2023
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Note | Regular issue | Vol 48, No. 3, 1998, pp.519-528
Published online, 1st January, 1970■ New Triterpenoidal Alkaloids from the Leaves of Buxus papillosa
Published online, 1st January, 1970
DOI: 10.3987/COM-97-7966
■ New Triterpenoidal Alkaloids from the Leaves of Buxus papillosa
Atta-ur-Rahman,* Samina Naz, Athar Ata, and M. Iqbal Choudhary*
*International Centre for Chemical Sciences, H. E. J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan
Abstract
Phytochemical investigations on the ethanolic extract of the leaves of Buxus papillosa of Pakistani origin have resulted in the isolation of two new triterpenoidal alklaloids, (-)-2α,16α-diacetoxy-9β,11β-epoxybuxamidine (1) and (+)-papillozine-C (2) along with one known triterpenoidal base, (-)-sempervirone (3) isolated for the first time from this species. The structures of these natural products were established through detailed specroscopic studies.
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