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Free keywords:
Brassinosteroids
23,24-bisnorcholenic acid
Labeled compounds
Brassinolide
Plant growth regulator
Phytohormone
Biosynthesis.
Biosynthetic-pathway
Side-chains
Construction
Constituents
Alkaloids
Oxidation
Steroids
Sulfones
Analogs.
Biochemistry & Biophysics in Current Contents(R)/Life
Sciences.
Abstract:
A number of hexadeuterated brassinosteroids (BS) containing a hydroxy group at C-22 or a 22R,23R-diol function were prepared starting from 23,24-bisnorcholenic acid methyl ester for biosynthetic studies. Synthesis of the cyclic part was accomplished via