S
Sayaka Shimamoto
Researcher at Tokyo Medical and Dental University
Publications - 4
Citations - 123
Sayaka Shimamoto is an academic researcher from Tokyo Medical and Dental University. The author has contributed to research in topics: Indole test & Moiety. The author has an hindex of 3, co-authored 4 publications receiving 111 citations. Previous affiliations of Sayaka Shimamoto include Hokkaido University.
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Subincanadines A-C, novel quaternary indole alkaloids from Aspidosperma subincanum.
Jun'ichi Kobayashi,Mitsuhiro Sekiguchi,Sayaka Shimamoto,Hideyuki Shigemori,Haruaki Ishiyama,Ayumi Ohsaki +5 more
TL;DR: Three novel quaternary indole alkaloids with an unprecedented 1-azoniatricyclo have been isolated from the barks of Aspidosperma subincanum Mart, and the structures of 1-6 and the stereochemistry of1-3 were elucidated by spectroscopic data and chemical means.
Journal ArticleDOI
Echinodolides A and B, new cembrane diterpenoids with an eight-membered lactone ring from the leaves of Echinodorus macrophyllus.
TL;DR: Two new cembrane diterpenoids with an eight-membered lactone ring were isolated from the leaves of the Brazilian medicinal plant Echinodorus macrophyllus, and the structures and relative stereochemistry were elucidated from their spectroscopic data.
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Echinophyllins C-F, new nitrogen-containing clerodane diterpenoids from Echinodorus macrophyllus.
TL;DR: Four new nitrogen-containing clerodane diterpenoids, echinophyllins C-F (1-4), were isolated from the leaves of the Brazilian medicinal plant Echinodorus macrophyllus, and their structures and relative stereochemistry were elucidated from their spectroscopic data.
Journal ArticleDOI
Subincanadines A—C, Novel Quaternary Indole Alkaloids from Aspidosperma subincanum.
Jun'ichi Kobayashi,Mitsuhiro Sekiguchi,Sayaka Shimamoto,Hideyuki Shigemori,Haruaki Ishiyama,Ayumi Ohsaki +5 more
TL;DR: In this article, three quaternary indole alkaloids with an unprecedented 1-azoniatricyclo[4.3.2]undecane moiety, subincanadines D (4) and E (5), have been isolated from the barks of Aspidosperma subinincanum Mart, and the structures of 1-6 and the stereochemistry of 1 -3 were elucidated by spectroscopic data and chemical means.