Microbial transformations of isophorone by Alternaria alternata and Neurospora crassa.

Abstract

Isophorone (3,5,5-trimethyl-2-cyclohexen-1-one), a monoterpene, and the structurally related 1,8-cineole and camphor, have demonstrated a protective effect against cancer, biological activity against a variety of microorganisms, and anti-oxidant properties. The derivatization of isophorone is, therefore, an important field of xenobiochemistry, pharmacology and toxicology. The aim of this study was to obtain derivatives of isophorone through microbial biotransformation and evaluate the biotransformation metabolites as potential antimicrobial agents. Incubation of isophorone with the fungi Alternaria alternata and Neurospora crassa afforded 4a-hydroxy- and 7-hydroxy-isophorone as transformation metabolites. The antimicrobial activities of isophorone and the metabolites were evaluated in vitro both by using agar dilution and microdilution methods. However, no significant antibacterial activity was observed when compared with those of standard substances.

• Authors: Ismail Kiran, Ozge Ozşen, Turgay Celik, Semra Ilhan, Bükay Yenice Gürsu, Fatih Demirci
• Journal: Natural product communications (Nat Prod Commun) Vol. 8 Issue 1 Pg. 59-61 (Jan 2013) ISSN: 1934-578X [Print] United States
• PMID: 23472460 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Anti-Infective Agents
• Cyclohexanones
• isophorone

Topics

• Alternaria (metabolism)
• Anti-Infective Agents (analysis)
• Biotransformation
• Cyclohexanones (chemistry, metabolism)
• Microbial Sensitivity Tests
• Neurospora crassa (metabolism)