Kobayashi

Publications (7)21.9 Total impact

• Article: Mukanadins A-C, new bromopyrrole alkaloids from marine sponge agelas nakamurai

  H Uemoto, M Tsuda, J Kobayashi
  Journal of Natural Products 08/2000; 63(7):1045. · 3.13 Impact Factor
• Article: Mukanadins A-C, new bromopyrrole alkaloids from marine sponge agelasnakamurai

  H Uemoto, M Tsuda, J Kobayashi
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  ABSTRACT: Three new bromopyrrole alkaloids, mukanadins A-C (1-3), have been isolated from the Okinawan marine sponge Agelas nakamurai, and the structures were elucidated from spectroscopic data.
  Journal of Natural Products 12/1999; 62(11):1581-3. · 3.13 Impact Factor
• Article: Palythoalones A and B, new ecdysteroids from the marine zoanthid palythoaaustraliae

  H Shigemori, Y Sato, T Kagata, J Kobayashi
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  ABSTRACT: Two new ecdysteroids, palythoalones A (1) and B (2), have been isolated from the marine zoanthid Palythoa australiae. The structures have been elucidated on the basis of spectroscopic data and by chemical means.
  Journal of Natural Products 03/1999; 62(2):372-4. · 3.13 Impact Factor
• Article: New cyclic polyketide peroxides from okinawan marine sponge plakortis sp

  A Fontana, M Ishibashi, H Shigemori, J Kobayashi
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  ABSTRACT: Three new cyclic peroxides (2-4) have been isolated from the Okinawan marine sponge Plakortis sp., and the structures were elucidated by extensive spectroscopic analyses. The absolute stereochemistries of 2 and 3 were determined by chemical conversion, whereas that of the dioxane ring of 4 was assigned by the modified Mosher's method.
  Journal of Natural Products 12/1998; 61(11):1427-9. · 3.13 Impact Factor
• Article: Spongiacidins A-D, new bromopyrrole alkaloids from hymeniacidon sponge

  K Inaba, H Sato, M Tsuda, J Kobayashi
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  ABSTRACT: Four new bromopyrrole alkaloids, spongiacidins A-D (1-4), have been isolated from an Okinawan marine sponge Hymeniacidon sp. and the structures elucidated on the basis of spectral data and chemical means.
  Journal of Natural Products 06/1998; 61(5):693-5. · 3.13 Impact Factor
• Article: Three new manzamine congeners from amphimedon sponge

  D Watanabe, M Tsuda, J Kobayashi
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  ABSTRACT: Three new manzamine congeners (1-3) have been isolated from the Okinawan marine sponge Amphimedon sp., and the structures, including relative stereochemistries, were elucidated on the basis of spectroscopic data. Absolute configuration at C-16 of 1 was determined by modified Mosher's method.
  Journal of Natural Products 06/1998; 61(5):689-92. · 3.13 Impact Factor
• Article: Three new metabolites from the marine yeast aureobasidium pullulans

  H Shigemori, M Tenma, K Shimazaki, J Kobayashi
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  ABSTRACT: Two new diketopiperazines (1 and 2) with a d-cis-4-hydroxyproline residue, and orcinotriol (3), a new 1,3-dihydroxyphenol derivative, were isolated from cultured broth of the yeast Aureobasidium pullulans, which was isolated from an Okinawan marine sponge. The structures of the compounds, including their absolute stereochemistries, were determined by spectroscopic data and chemical means.
  Journal of Natural Products 06/1998; 61(5):696-8. · 3.13 Impact Factor