Identification of castasterone, 6-deoxocastasterone, typhasterol and 6-deoxotyphasterol from the shoots of Arabidopsis thaliana

Plant Cell Physiol. 1996 Dec;37(8):1201-3. doi: 10.1093/oxfordjournals.pcp.a029074.


Endogenous brassinosteroids in the shoots of Arabidopsis thaliana were investigated. Castasterone, 6-deoxocastasterone, typhasterol and 6-deoxotyphasterol were identified by GC-MS. The co-occurrence of 6-deoxo-brassinosteroids and 6-oxo-brassinosteroids suggests that there are both early and late C6-oxidation pathways of brassinosteroids in A. thaliana.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Arabidopsis / metabolism
  • Cholestanols / chemistry*
  • Cholestanols / isolation & purification
  • Molecular Structure
  • Plant Growth Regulators / chemistry*
  • Plant Growth Regulators / isolation & purification
  • Plant Shoots / metabolism


  • Cholestanols
  • Plant Growth Regulators
  • castasterone