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Yusuke Hirasawa
Researcher at Hoshi University
Publications - 201
Citations - 3452
Yusuke Hirasawa is an academic researcher from Hoshi University. The author has contributed to research in topics: Lycopodium & Indole test. The author has an hindex of 31, co-authored 195 publications receiving 3053 citations. Previous affiliations of Yusuke Hirasawa include University of Malaya & Hokkaido University.
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Journal ArticleDOI
The lycopodium alkaloids
TL;DR: This review covered the structure elucidation and biological activity of new Lycopodium alkaloids and total synthesis of some Lycop sodium alkaloid reported in the literature from 2004 to July in 2008.
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Alkaloids from the seeds of Peganum harmala showing antiplasmodial and vasorelaxant activities
Adil Astulla,Kazumasa Zaima,Yosuke Matsuno,Yusuke Hirasawa,Wiwied Ekasari,Aty Widyawaruyanti,Noor Cholies Zaini,Hiroshi Morita +7 more
TL;DR: Quinazoline alkaloid, vasicinone, showed a vasorelaxant activity against phenylephrine-induced contraction of isolated rat aorta and a moderate in vitro antiplasmodial activity against Plasmodium falciparum.
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Cassiarins A and B, novel antiplasmodial alkaloids from Cassia siamea.
Hiroshi Morita,Shiori Oshimi,Yusuke Hirasawa,Koichiro Koyama,Toshio Honda,Wiwied Ekasari,Gunawan Indrayanto,Noor Cholies Zaini +7 more
TL;DR: Two novel alkaloids with an unprecedented tricyclic skeleton, cassiarins A and B, have been isolated from the leaves of Cassia siamea, and the structures were elucidated on the basis of spectroscopic data.
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Lyconadin A, a Novel Alkaloid from Lycopodium complanatum
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Sieboldine A, a novel tetracyclic alkaloid from Lycopodium sieboldii, inhibiting acetylcholinesterase.
TL;DR: Sieboldine A (1) exhibited a potent inhibitory activity against acetylcholinesterase and modest cytotoxicity and the structure and relative stereochemistry were elucidated on the basis of 2D NMR data and X-ray analysis.