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Dive into the research topics where Toyoyuki Nishi is active.

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Featured researches published by Toyoyuki Nishi.


Phytochemistry | 2008

Phenolic and iridoid glycosides from Strychnos axillaris

Atsuko Itoh; Yasuhiro Tanaka; Naotaka Nagakura; Toru Akita; Toyoyuki Nishi; Takao Tanahashi

Five phenolic glycosides 1-5 and an iridoid glucoside 6 were isolated, together with 22 known compounds, from the dried barks and woods of Strychnosaxillaris. Their structures were determined by application of spectroscopic (NMR, MS) and chemical methodologies.


Journal of Natural Medicines | 2006

A quinic acid ester from Strychnos lucida

Atsuko Itoh; Yasuhiro Tanaka; Naotaka Nagakura; Toyoyuki Nishi; Takao Tanahashi

A new quinic acid ester, 4-O-(3,5-dimethoxy-4-hydroxybenzoyl)quinic acid (1) was isolated, together with 22 known compounds, from the barks and woods of Strychnos lucida. The structure of the new compound was determined by spectroscopic (NMR, MS) and chemical means.


Journal of Natural Products | 2005

Indole alkaloids and other constituents of Rauwolfia serpentina.

Atsuko Itoh; Tomoko Kumashiro; Machiko Yamaguchi; Naotaka Nagakura; Yoshiyuki Mizushina; Toyoyuki Nishi; Takao Tanahashi


Phytochemistry | 2003

Two chromone-secoiridoid glycosides and three indole alkaloid glycosides from Neonauclea sessilifolia.

Atsuko Itoh; Takao Tanahashi; Naotaka Nagakura; Toyoyuki Nishi


Phytochemistry | 2002

Secoiridoid and iridoid glucosides from Syringa afghanica

Yukiko Takenaka; Naoaki Okazaki; Takao Tanahashi; Naotaka Nagakura; Toyoyuki Nishi


Phytochemistry | 2009

Secoiridoid glucosides and unusual recyclized secoiridoid aglycones from Ligustrum vulgare

Takao Tanahashi; Yukiko Takenaka; Naoaki Okazaki; Megumi Koge; Naotaka Nagakura; Toyoyuki Nishi


Journal of Natural Products | 2005

Secoiridoid glucosides from Strychnos spinosa.

Atsuko Itoh; Naoko Oya; Eri Kawaguchi; Sayo Nishio; Yasuhiro Tanaka; Emi Kawachi; Toru Akita; Toyoyuki Nishi; Takao Tanahashi


Chemical & Pharmaceutical Bulletin | 2002

Nine New Secoiridoid Glucosides from Jasminum nudiflorum

Yukiko Takenaka; Takao Tanahashi; Hiromi Taguchi; Naotaka Nagakura; Toyoyuki Nishi


Journal of Natural Products | 2002

Flavonoid glycosides from Rhazya orientalis

Atsuko Itoh; Tomoko Kumashiro; Takao Tanahashi; Naotaka Nagakura; Toyoyuki Nishi


Chemical & Pharmaceutical Bulletin | 2000

Five secoiridoid glucosides esterified with a cyclopentanoid monoterpene unit from Jasminum nudiflorum.

Takao Tanahashi; Yukiko Takenaka; Naotaka Nagakura; Toyoyuki Nishi

Collaboration


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Takao Tanahashi

Kobe Pharmaceutical University

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Naotaka Nagakura

Kobe Pharmaceutical University

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Atsuko Itoh

Kobe Pharmaceutical University

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Yukiko Takenaka

Kobe Pharmaceutical University

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Yasuhiro Tanaka

Kobe Pharmaceutical University

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Naoaki Okazaki

Kobe Pharmaceutical University

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Hiromi Taguchi

Kobe Pharmaceutical University

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Megumi Koge

Kobe Pharmaceutical University

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