Mariko Kitajima

Overview

Best Publications

• Pteropodine and isopteropodine positively modulate the function of rat muscarinic M1 and 5-HT2 receptors expressed in Xenopus oocyte

  Tai-Hyun Kang;Kinzo Matsumoto;Michihisa Tohda;Yukihisa Murakami

  455
  Citations

• Studies on the synthesis and opioid agonistic activities of mitragynine-related indole alkaloids: discovery of opioid agonists structurally different from other opioid ligands.

  Hiromitsu Takayama;Hayato Ishikawa;Mika Kurihara;Mariko Kitajima

  310
  Citations

• Rhynchophylline and isorhynchophylline inhibit NMDA receptors expressed in Xenopus oocytes.

  Tai-Hyun Kang;Yukihisa Murakami;Kinzo Matsumoto;Hiromitsu Takayama

  203
  Citations

• Antioxidant and cytotoxic flavonoids from the flowers of Melastoma malabathricum L.

  Deny Susanti Deny Susanti;Hasnah Mohd. Sirat;Farediah Ahmad;Rasadah Mat Ali

  203
  Citations

• A New Indole Alkaloid, 7 alpha-Hydroxy-7H-mitragynine, from Mitragyna speciosa in Thailand.

  Dhavadee Ponglux;Sumphan Wongseripipatana;Hiromitsu Takayama;Masae Kikuchi

  190
  Citations

• Two new tryptamine-derived alkaloids from Chimonanthus praecox f. concolor

  Mariko Kitajima;Ikue Mori;Kazumichi Arai;Noriyuki Kogure

  179
  Citations

• Feasible production of camptothecin by hairy root culture of Ophiorrhiza pumila

  K. Saito;H. Sudo;M. Yamazaki;M. Koseki-Nakamura

  178
  Citations

• Protective effect of rhynchophylline and isorhynchophylline on in vitro ischemia-induced neuronal damage in the hippocampus: putative neurotransmitter receptors involved in their action

  Tai-Hyun Kang;Yukihisa Murakami;Hiromitsu Takayama;Mariko Kitajima

  168
  Citations

• Metabolite profiling of alkaloids and strictosidine synthase activity in camptothecin producing plants.

  Yasuyo Yamazaki;Akiko Urano;Hiroshi Sudo;Mariko Kitajima

  162
  Citations

• New type of trimeric and pentameric indole alkaloids from Psychotria rostrata.

  Hiromitsu Takayama;Ikue Mori;Mariko Kitajima;Norio Aimi

  160
  Citations

• Prenylated flavonoids and related compounds of the Indonesian Artocarpus (Moraceae)

  Euis H. Hakim;Sjamsul A. Achmad;Lia D. Juliawaty;Lukman Makmur

  152
  Citations

• Simultaneous analysis of mitragynine, 7-hydroxymitragynine, and other alkaloids in the psychotropic plant “kratom” ( Mitragyna speciosa ) by LC-ESI-MS

  Ruri Kikura-Hanajiri;Maiko Kawamura;Takuro Maruyama;Mariko Kitajima

  150
  Citations

• First total synthesis of trimeric indole alkaloid, psychotrimine.

  Yohei Matsuda;Mariko Kitajima;Hiromitsu Takayama

  144
  Citations

• Isolation of gelsedine-type indole alkaloids from Gelsemium elegans and evaluation of the cytotoxic activity of gelsemium alkaloids for A431 epidermoid carcinoma cells.

  Mariko Kitajima;Tomonori Nakamura;Noriyuki Kogure;Mio Ogawa

  140
  Citations

• Metabolomics-oriented isolation and structure elucidation of 37 compounds including two anthocyanins from Arabidopsis thaliana.

  Ryo Nakabayashi;Miyako Kusano;Makoto Kobayashi;Takayuki Tohge

  126
  Citations

• Involvement of μ-opioid receptors in antinociception and inhibition of gastrointestinal transit induced by 7-hydroxymitragynine, isolated from Thai herbal medicine Mitragyna speciosa

  Kenjiro Matsumoto;Yoshio Hatori;Toshihiko Murayama;Kimihito Tashima

  124
  Citations

• Biosynthesis of camptothecin. In silico and in vivo tracer study from [1-13C]glucose

  Yasuyo Yamazaki;Mariko Kitajima;Masanori Arita;Hiromitsu Takayama

  115
  Citations

• Lycopodium alkaloids: isolation and asymmetric synthesis.

  Mariko Kitajima;Hiromitsu Takayama

  112
  Citations

• Isolation, structure elucidation, and total synthesis of two new Chimonanthus alkaloids, chimonamidine and chimonanthidine

  Hiromitsu Takayama;Yohei Matsuda;Kyohei Masubuchi;Atsushi Ishida

  111
  Citations

• Asymmetric Total Synthesis of a Pentacyclic Lycopodium Alkaloid: Huperzine‐Q

  Atsushi Nakayama;Noriyuki Kogure;Mariko Kitajima;Hiromitsu Takayama

  110
  Citations

• New lycorine-type alkaloid from Lycoris traubii and evaluation of antitrypanosomal and antimalarial activities of lycorine derivatives.

  Yosuke Toriizuka;Eri Kinoshita;Noriyuki Kogure;Mariko Kitajima

  109
  Citations

• Chemical studies on monoterpenoid indole alkaloids from medicinal plant resources Gelsemium and Ophiorrhiza

  Mariko Kitajima

  102
  Citations

• Structure reinvestigation of gelsemoxonine, a constituent of Gelsemium elegans, reveals a novel, azetidine-containing indole alkaloid

  Mariko Kitajima;Noriyuki Kogure;Kentaro Yamaguchi;Hiromitsu Takayama

  96
  Citations

• First asymmetric total syntheses of cernuane-type Lycopodium alkaloids, cernuine, and cermizine D.

  Yasuhiro Nishikawa;Mariko Kitajima;Hiromitsu Takayama

  93
  Citations

• A divergent approach for the total syntheses of cernuane-type and quinolizidine-type Lycopodium alkaloids

  Yasuhiro Nishikawa;Mariko Kitajima;Noriyuki Kogure;Hiromitsu Takayama

  91
  Citations

• Four Novel Gelsenicine-Related Oxindole Alkaloids from the Leaves of Gelsemium elegans Benth.†

  Noriyuki Kogure;Naoko Ishii;Mariko Kitajima;Sumphan Wongseripipatana

  88
  Citations

• Effects of Uncaria tomentosa total alkaloid and its components on experimental amnesia in mice: elucidation using the passive avoidance test.

  Mohamed A.‐F. Abdel‐Fattah;Kinzo Matsumoto;Keiichi Tabata;Hiromitsu Takayama

  85
  Citations

• MGM-9 [(E)-methyl 2-(3-ethyl-7a,12a-(epoxyethanoxy)-9-fluoro-1,2,3,4,6,7,12,12b-octahydro-8-methoxyindolo[2,3-a]quinolizin-2-yl)-3-methoxyacrylate], a derivative of the indole alkaloid mitragynine: A novel dual-acting μ- and κ-opioid agonist with potent antinociceptive and weak rewarding effects in mice

  Kenjiro Matsumoto;Hiromitsu Takayama;Minoru Narita;Atsushi Nakamura

  74
  Citations

• Structure characterization, biomimetic total synthesis and optical purity of two new pyrrolidine alkaloids, pandamarilactonine-a and -b, isolated from Pandanus amaryllifolius Roxb

  Hiromitsu Takayama;Tomotake Ichikawa;Toshiyuki Kuwajima;Mariko Kitajima

  74
  Citations