Browsing Journal Articles by Author "Ichimaru, Momoyo"

Now showing items 1-7 of 7

    • Absolute configurations of two acyclic triterpenoids from Ekebergia capensis 

      Juma, Francis D; Nganga, Joseph N; Mathenge, Simon G; Kato, Atsushi; Ichimaru, Momoyo; Moriyasu, Masataka; Nishiyama, Yumi (Department of Clinical Medicine and Therapeutics, 1999-12)
      The absolute configurations of two acyclic triterpenoids 1 and 2, previously isolated from the bark of Ekebergia capensis (Meliaceae) have been determined by the modified Mosher's method.

    • Acyclic triterpenoids from Ekebergia capensis 

      Juma, Francis D; Nganga, Joseph N; Mathenge, Simon G; Atsushi Kato; Tachibana, Yoko; Ichimaru, Momoyo; Moriyasu, Masataka; Nishiyama, Yumi (Department of Clinical Medicine and Therapeutics, 1996-06)
      From the dried bark of Ekebergia capensis, two novel acyclic triterpenoids, 2,3,22,23-tetrahydroxy-2,6,10,15,19,23-hexamethyl-6,10,14,18-tetracosatetraene and 2-hydroxymethyl-2,3,22,23-tetrahydroxy-6,10,15,19,23-pentamet ...

    • Examination of alkaloidal constituents of zanthoxylum usambarense by a combination of ion-pair extraction and ion-pair chromatography using sodium perchlorate 

      Kato, Atsushi; Moriyasu, Masataka; Ichimaru, Momoyo; Nishiyama, Yumi; Juma, Francis D.; Nganga, Joseph N; Mathenge, Simon G.; Ogeto, John O. (Department of Natural Medicinal Chemistry, Kobe Pharmaceutical UniversityDepartment of Medicine, University of NairobiDepartment of Botany, University of NairobiDepartment of Pharmacy, University of Nairobi, 1995)
      Quaternary alkaloids of the stem of Zanthoxylum usambarense, an important medicinal plant in Kenya utilized for the treatment of pneumonia and rheumatism, were examined by a combination of ion-pair extraction and preparative ...

    • Ion-pair and Ion-suppression High Performance Liquid Chromatographic Analysis of Alkaloidal Constituents of Artabotrys monteiroae 

      Kato, Atsushi; Moriyasu, Masataka; Nishiyama, Yumi; Ichimaru, Momoyo; Juma, Francis D.; Ogeto, John O. (Kobe Women's College of PharmacyDepartment of Medicine. University of NairobiDepartment of Pharmacy. University of Nairobi,, 1993)
      lon-pair and ion-suppression mode high performance liquid chromatography was conducted on the alkaloidal constituents of the rools of Artabotrys monteiroae, an lmportant medicinal plant in Kenya having analgesic and ...

    • Isolation of alkaloidal constituents of zanthoxylum usambarense and zanthoxylum chalybeum using ion-pair hplc 

      Kato, Atsushi; Moriyasu, Masataka; Ichimaru, Momoyo; Nishiyama, Yumi; Juma, Francis D.; Nganga, Joseph N.; Mathenge, Simon G.; Ogeto, John O. (Department of Natural Medicinal Chemistry, Kobe Pharmaceutical UniversityDepartment of Medicine, University of Nairobi,Department of Botany, University of NairobiDepartment of Pharmacy, University of Nairobi, 1995)
      Quaternary alkaloids of two Kenyan medicinal plant belonging to the genus Zanthoxylum, Z. usambarense and Z_ chalybeum, were examined using ion-pair HPLC. Both plants contained similar alkaloids, but colored protoberberines ...

    • Structural Elucidation of New Flavanones Isolated from Erythrina abyssinica 

      Ichimaru, Momoyo; Moriyasu, Masataka; Nishiyama, Yumi; Kato, Atsushi; Mathenge, Simon G; Juma, Fransis D; Nganga, Joseph N (University of Nairobi, 1996)
      Three new prenylated flavanones, abyssinin I (1), II (2), and III (3), have been isolated from the African medicinal plant Erythrina abyssinica, together with six known flavanones. The structural elucidation of 1−3 by ...

    • Studies on unused medicinal resources in africa, occurrence of sulfur compounds in cassipourea genus in kenya 

      Kato, Atsushi; Ichimaru, Momoyo; Matsukawa, Motomi; Moriyasu, Masataka; Fukuoka, Nobuyuki; Kishida, Kesa; Ogeto, J.O; Juma, Francis D. (University of Nairobi,College Health Services,, 1989)
      In the current re earch, the inland genus Ca sipourea of Rhizophoraceae in Kenya was pinpointed as a target for developing new medicinal resources. The field work on four species of Cassipourea, i.e. Cassipourea malosana, ...