Applied Microbiology and Biotechnology

, Volume 53, Issue 5, pp 601–604

Biotransformation of methyl ent-17-hydroxy-16β-kauran-19-oate by Rhizopus stolonifer

  • H. S. Vieira
  • J. A. Takahashi
  • M. A. D. Boaventura
ORIGINAL PAPER

DOI: 10.1007/s002530051663

Cite this article as:
Vieira, H., Takahashi, J. & Boaventura, M. Appl Microbiol Biotechnol (2000) 53: 601. doi:10.1007/s002530051663

Abstract

Methyl ent-17-hydroxy-16β-kauran-19-oate was fed to a 2-day-old culture of the fungus Rhizopus stolonifer, fermenting at room temperature (25 °C) in an orbital shaker (2 l). After 11 days, both broth and mycelia were extracted with ethyl acetate. Two novel compounds were isolated from this experiment: methyl ent-9α,17-dihydroxy-16β-kauran-19-oate and methyl ent-7α,17-dihydroxy-16β-kauran-19-oate. Their structures were fully confirmed by spectroscopic methods.

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • H. S. Vieira
    • 1
  • J. A. Takahashi
    • 1
  • M. A. D. Boaventura
    • 1
  1. 1.Departamento de Química, ICEx, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Pampulha, 31270-901 Belo Horizonte, MG, Brazil e-mail: dianab@dedalus.lcc.ufmg.br Tel.: +55-2131-4995760 Fax: +55-2131-4995700BR