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Featured researches published by Kim Qui Tran.


Tetrahedron Letters | 1999

Staminol A, a novel diterpene from Orthosiphon stamineus

Pavlos Stampoulis; Yasuhiro Tezuka; Arjun H. Banskota; Kim Qui Tran; Ikuo Saiki; Shigetoshi Kadola

Abstract From the aerial part of a Vietnamese medicinal plant, Orthosiphon stamineus Benth . (Lamiaceae), staminol A (1), a diterpene with a novel carbon framework, was isolated together with four new isopimarane-type diterpenes, orthosiphols FI (2–5). Their structures were elucidated by the spectroscopic analyses.


Bioorganic & Medicinal Chemistry Letters | 1998

Cytotoxic cycloartane-type triterpenes from Combretum quadrangulare

Arjun H. Banskota; Yasuhiro Tezuka; Le Kim Phung; Kim Qui Tran; Ikuo Saiki; Yoshihisa Miwa; Tooru Taga; Shigetoshi Kadota

Seven novel cycloartane-type triterpenes were isolated from Combretum quadrangulare, and their structures were elucidated on the basis of spectral analysis. All these compounds were tested for their cytotoxicity against murine colon 26-L5 carcinoma cells. Methyl quadrangularate B (2) and methyl quadrangularate D (4) exhibited potent cytotoxicity having ED50 values 9.54 and 5.42 microM, respectively.


Chemical & Pharmaceutical Bulletin | 2000

Constituents of the Vietnamese Medicinal Plant Orthosiphon stamineus

Yasuhiro Tezuka; Pavlos Stampoulis; Arjun H. Banskota; Suresh Awale; Kim Qui Tran; Ikuo Saiki; Shigetoshi Kadota


Journal of Natural Products | 2000

Quadranosides I-V, new triterpene glucosides from the seeds of Combretum quadrangulare.

I. K. Adnyana; Yasuhiro Tezuka; Arjun H. Banskota; Quanbo Xiong; Kim Qui Tran; Shigetoshi Kadota


Biological & Pharmaceutical Bulletin | 2000

Hepatoprotective effect of Combretum quadrangulare and its constituents.

Arjun H. Banskota; Yasuhiro Tezuka; I Ketut Adnyana; Quanbo Xiong; Koji Hase; Kim Qui Tran; Ken Tanak; Ikuo Saiki; Shigetoshi Kadota


Journal of Natural Products | 2000

Thirteen novel cycloartane-type triterpenes from Combretum quadrangulare

Arjun H. Banskota; Yasuhiro Tezuka; Kim Qui Tran; Ken Tanaka; Ikuo Saiki; Shigetoshi Kadota


Chemical & Pharmaceutical Bulletin | 2000

Quadranosides VI-XI, six new triterpene glucosides from the seeds of Combretum quadrangulare.

I Ketut Adnyana; Yasuhiro Tezuka; Suresh Awale; Arjun H. Banskota; Kim Qui Tran; Shigetoshi Kadota


Chemical & Pharmaceutical Bulletin | 2000

Methyl quadrangularates A-D and related triterpenes from Combretum quadrangulare.

Arjun H. Banskota; Yasuhiro Tezuka; Kim Qui Tran; Ken Tanaka; Ikuo Saiki; Shigetoshi Kadota


Biological & Pharmaceutical Bulletin | 2000

Hepatoportective Constituents of the Seeds of Combretum quadrangulare

I Ketut Adnyana; Yasuhiro Tezuka; Arjun H. Banskota; Kim Qui Tran; Shigetoshi Kadota


Organic Letters | 1999

Staminolactones A and B and norstaminol A: three highly oxygenated staminane-type diterpenes from Orthosiphon stamineus.

Pavlos Stampoulis; Yasuhiro Tezuka; Arjun H. Banskota; Kim Qui Tran; Ikuo Saiki; Shigetoshi Kadota

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Shigetoshi Kadota

National Research Institute of Police Science

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I Ketut Adnyana

National Research Institute of Police Science

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Ken Tanak

National Research Institute of Police Science

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