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Dive into the research topics where Shoji Yahara is active.

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Featured researches published by Shoji Yahara.


Tetrahedron Letters | 1995

26-AMINOCHOLESTANOL DERIVATIVE, A NOVEL KEY INTERMEDIATE OF STEROIDAL ALKALOIDS, FROM SOLANUM ABUTILOIDES

Emi Ohmura; Takanon Nakamura; Rui H. Tian; Shoji Yahara; Hitoshi Yoshimitsu; Toshihiro Nohara

Abstract A novel 26-aminocholestanol derivative which is regarded as an important key intermediate to spirosolane and solanidane derivatives has been isolated from the roots of Solanum abutiloides .


Chemical & Pharmaceutical Bulletin | 1984

Potentiation of Nerve Growth Factor-Mediated Nerve Fiber Production in Organ Cultures of Chicken Embryonic Ganglia by Ginseng Saponins : Structure-Activity Relationship

Yumi Takemoto; Takashi Ueyama; Hiroshi Saito; Shuhei Horio; Shuichi Sanada; Junzo Shoji; Shoji Yahara; Osamu Tanaka; Shoji Shibata


Phytochemistry | 1980

Labdane-type diterpenes from Stevia rebaudiana

Mochammad Sholichin; Kazuo Yamasaki; Reiko Miyama; Shoji Yahara; Osamu Tanaka


Chemical & Pharmaceutical Bulletin | 1992

Three new withanolides, physagulins E, F and G from Physalis angulata L.

Kazushi Shingu; Shoji Yahara; Hikaru Okabe; Toshihiro Nohara


Chemical & Pharmaceutical Bulletin | 1989

Studies on lens-aldose-reductase inhibitor in medicinal plants. II. Active constituents of Monochasma savatierii Franch. et Maxim.

Hiroshi Kohda; Seiji Tanaka; Yasutoshi Yamaoka; Shoji Yahara; Toshihiro Nohara; Tsuyoshi Tanimoto; Akira Tanaka


Natural Medicines | 1997

Detection and Determination of Antioxidative Components in Lycium chinense

Masahiro Terauchi; Hisayuki Kanamori; Masao Nobuso; Shoji Yahara; Toshihiro Nohara


Chemical & Pharmaceutical Bulletin | 1990

The studies on the constituents of leguminous plants. Part XVII. Isoflavan and related compounds from Dalbergia odorifera. II.

Tetsu Ogata; Shoji Yahara; Reiko Hisatsune; Ryoji Konishi; Toshihiro Nohara


Chemical & Pharmaceutical Bulletin | 1994

Steroidal glycosides from Solanum dulcamara

Yung-Yung Lee; Fumio Hashimoto; Shoji Yahara; Toshihiro Nohara; Naotoshi Yoshida


Chemical & Pharmaceutical Bulletin | 1990

New iridoid trimers and tetramers from seeds of Eucommia ulmoides.

Shoji Yahara; Kimiyo Kato; Yoshihisa Nakazawa; Yoshihiro Toda; Toshihiro Nohara


Chemical & Pharmaceutical Bulletin | 1990

New withanolides, daturataturins A and B from Datura tatura L.

Kazushi Shingu; Shoji Yahara; Toshihiro Nohara

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