Synthesis and biological activity of furostanic analogues of brassinosteroids bearing the 5α-hydroxy-6-oxo moiety

Two furostanic analogues of brassinosteroids bearing the 5α-hydroxy-6-oxo moiety were synthesized and their biological activity studied using the bean second internode elongation test. One of the compounds produced significant stimulation at doses of 2.5 and 5 ng/plant.

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