著者所属：Department of Chemistry, Joetsu University of Education Department of Chemistry, Joetsu University of Education Department of Biosciences, Teikyo University Department of Biosciences, Teikyo University
Brassinosteroids (BRs) contained in rice (Oryza sativa L. ) bran were extracted and highly purified. A new BR, (22R, 23R, 24S)-3α, 22, 23-trihydroxy-24-ethyl-5α-cholestan-6-one, which is termed 28-homo-typhasterol, was identified by GC-MS, in addition to 28-homoteasterone and 6-deoxocastasterone.
