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  • Ritsuko Yokoyama, Jian-mei Huang, Chun-shu Yang, Yoshiyasu Fukuyama
  • Biology, Medicine
  • Journal of natural products
  • 2002 (First Publication: 1 April 2002)
  • Two new seco-prezizaane-type sesquiterpenes, 1,2-dehydroneomajucin (1) and jiadifenin (2), were isolated from the methanol extract of the pericarps of Illicium jiadifengpi, indigenous to the southernExpand
  • Yoshiyasu Fukuyama, Kousuke Nakade, Yuka Minoshima, Ritsuko Yokoyama, Haifeng Zhai, Yasuhide Mitsumoto
  • Chemistry, Medicine
  • Bioorganic & medicinal chemistry letters
  • 2002 (First Publication: 1 April 2002)
  • Honokiol, a main biphenyl neolignan of the traditional crude medicine, Magnoliae cortex, was found to show neurotrophic activity on the cultures of rat cortical neurons at concentration from 0.1 toExpand
  • Ritsuko Yokoyama, Jian-mei Huang, Atsuko Hosoda, Kozue Kino, Chun-shu Yang, Yoshiyasu Fukuyama
  • Chemistry, Medicine
  • Journal of natural products
  • 2003 (First Publication: 1 June 2003)
  • A methanol extract of the pericarps of Illicium minwanense afforded seven new seco-prezizaane-type sesquiterpenes (2-8) and a new abietane-type diterpene (9), together with six previously knownExpand
  • Yoshio Fujii, Tomohiko Nomura, Ritsuko Yokoyama, Sumio Shinoda, Keinosuke Okamoto
  • Biology, Medicine
  • Infection and Immunity
  • 2003 (First Publication: 1 March 2003)
  • ABSTRACT We previously reported that the aerolysin-like hemolysin of Aeromonas sobria stimulates T84 cells to produce cyclic AMP, which then emerges in the culture medium. In order to clarify theExpand