Collect. Czech. Chem. Commun. 1986, 51, 687-697

Preparation of 2α,3α-dihydroxy-7-oxa-6-oxo-23,24-dinor-B-homo-5α-cholanic acid, its esters and amides as brassinolide analogues

Václav Černýa, Miroslav Strnadb and Miroslav Kamínekb

a Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Praha 6
b Institute of Experimental Botany, Czechoslovak Academy of Sciences, 160 00 Praha 6


Synthesis of brassinosteroids IIb, d, g, i, k, m, o and evaluation of their growth-promoting activity is reported. The acid IIb shows high activity in both the bean first and second internode assay.