Hiroshi Kohda
Hiroshima University
66 Papers
544 Citations
Hiroshi Kohda is an academic researcher from Hiroshima University. The author has contributed to research in topics: Chemistry & Triterpene. The author has an hindex of 23, co-authored 66 publications. Previous affiliations of Hiroshi Kohda include Yasuda Women's University.
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Papers
Benzoxazinones from Coix lachryma-jobi var. ma-yuen
TL;DR: The absolute configurations of 2- O -β- D -glucopyranosyl-7-methoxy-1,4(2H)-benzoxazin-3-one and three congeners isolated from Coix lachryma-jobi var. ma-yuen were determined by X-ray analysis and chemical correlation as the 2 R type.
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Tannins and Related Compounds. CXXII. New Dimeric, Trimeric and Tetrameric Ellagitannins, Lambertianins A-D, from Rubus lambertianus SERINGE
Takashi Tanaka,Hideki Tachibana,Gen-ichiro Nonaka,Itsuo Nishioka,Feng-Lin Hsu,Hiroshi Kohda,Osamu Tanaka +6 more
TL;DR: HPLC analyses of fifteen Rubus species collected in Japan and Taiwan revealed that the trimer (8) and the tetramer (10), together with sanguiin H-6 (1), occur widely in these species.
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Eurycomanone and eurycomanol, quassinoids from the roots of Eurycoma longifolia
TL;DR: From the roots of Eurycoma longifolia, two highly oxygenated quassinoids, named eurycomanone and eury comanol were isolated and the structures of both new bitter principles were elucidated by NMR, MS, UV and IR.
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A triterpene and saponin from roots of Ilex pubescens
TL;DR: A triterpene and its glycoside have been isolated from methanol extract of roots of Ilex pubescens as discussed by the authors, and their structures were established as 3β, 19α-dihydroxyurs-12-en-24,28-dioic acid and its 28-β- d -glucopyranosyl ester, based on chemical and spectral evidence.
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