[EN] 5-FLUORO-3a,17ß-DIHYDROXY-5a-ANDROSTAN-6-ONE, THE METHOD FOR ITS PRODUCTION AND ITS USE FOR INFLUENCING OF PLANT GROWTH [FR] 5-FLUORO-3?,17?-DIHYDROXY-5?-ANDROSTAN-6-ONE, PROCÉDÉ DE PRODUCTION CORRESPONDANT, ET SON UTILISATION POUR AGIR SUR LA CROISSANCE DE PLANTES
using standard operations (reaction of 3beta-alcohols with (diethylamino)sulfurtrifluoride, cleavage of epoxide with HF in py or BF 3.Et 2O). The 5alpha-fluorine was found to affect chemical reactivity (e.g., electrophilic addition to the Delta (2)-double bond) as well as physical properties (e.g., NMR, chromatographic behavior) of the products. Cytotoxicity of the products was studied using human normal
[EN] 5-FLUORO-3a,17ß-DIHYDROXY-5a-ANDROSTAN-6-ONE, THE METHOD FOR ITS PRODUCTION AND ITS USE FOR INFLUENCING OF PLANT GROWTH<br/>[FR] 5-FLUORO-3?,17?-DIHYDROXY-5?-ANDROSTAN-6-ONE, PROCÉDÉ DE PRODUCTION CORRESPONDANT, ET SON UTILISATION POUR AGIR SUR LA CROISSANCE DE PLANTES
申请人:USTAV ORGANICKE CHEMIE A BIOCH
公开号:WO2009115060A1
公开(公告)日:2009-09-24
5-Fluoro-3α,17β-dihydroxy-5α-androstan-6-one IV and the method of its production are described. The synthesis consists of partial hydrolyses of 5-fluoro-6-oxo-5α-androstan-3β,17β-diyl diacetate with mild alkaline agent to 5-fluoro-3β-hydroxy-6-oxo-5α-androstan-17β-yl acetate that on solvolytic change of hydroxyl configuration in position 3 affords 5-fluoro-3α-hydroxy-6-oxo-5α-androstan-17β-yl acetate, which on deprotection afforded desired 5-fluoro-3α,17β-dihydroxy-5α-androstan-6-one IV. The invention relates also to the use of 5-fluoro-3α,17β-dihydroxy-5α-androstaii-6-one IV for influencing of plant growth, especially for increasing of plant yield and also for removal of plant stresses.