Johji Yamahara
Kyoto Pharmaceutical University
227 Papers
2.8K Citations
Johji Yamahara is an academic researcher from Kyoto Pharmaceutical University. The author has contributed to research in topics: Chemistry & Triterpene. The author has an hindex of 50, co-authored 226 publications. Previous affiliations of Johji Yamahara include Suzugamine Women's College.
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Papers
New bioactive monoterpene glycosides from Paeoniae Radix.
Nobutoshi Murakami,Masami Saka,Hiromi Shimada,Hisashi Matsuda,Johji Yamahara,Masayuki Yoshikawa +5 more
TL;DR: 1-O-beta-D-glucopyranosyl-paeonisuffrone was found to inhibit histamine release from rat peritoneal exudate cells induced by antigen-antibody reaction.
Biologically active principles of crude drugs. II. Anti-allergic principles in "Shoseiryu-To" anti-inflammatory properties of paeoniflorin and its derivatives.
TL;DR: Paeonon inhibited tissue swelling in the adjuvant arthritis, while paeoniflorin and its related compounds were ineffective in inhibiting non-allergic inflammatory response.
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Inhibition of cytotoxic drug-induced vomiting in suncus by a ginger constituent
TL;DR: Les resultats indiquent que l'efficacite de l'extrait est equivalent a celui du metoclopramide.
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Camelliasaponins b1, b2, c1 and c2, new type inhibitors of ethanol absorption in rats from the seeds of camellia japonica l.
Masayuki Yoshikawa,Emiko Harada,Toshiyuki Murakami,Hisashi Matsuda,Johji Yamahara,Nobutoshi Murakami +5 more
TL;DR: The inhibitory effect of camelliasaponins and related saponins on ethanol absorption have been examined, and it was found that the triterpene oligoglycoside structure having an acyl group was essential to exerting the activity.
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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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