Mimicking natural phytohormones. 26-Hydroxycholestan-22-one derivatives as plant growth promoters

trans-Hydroboration–oxidation products in Δ5-steroids via a hydroboration-retro-hydroboration mechanism

“…1). 8,9 The reactions were subjected to a thorough temperature study (from 20 C to À20 C). In our hands, for both substrates, the crude contained three main components and ultimately four products were isolated and fully characterized.…”

Fused Pyrroles in Cholestane and Norcholestane Side Chains: Acaricidal and Plant Growth-Promoting Effects

“…The concentration of DMSO did not exceed 0.1% ( v / v ) in the final solutions used for treatments. These concentrations were established based on previous experiences in similar studies and in experiments involving steroidal compounds [ 51 , 52 , 53 , 54 ].…”

Steroidal Plant Growth Promoters vs. Phytopathogens, via Enzymatic Regulation; An in <i>Silico</i> Approach

“…In the present work, fifteen 22-oxocholestanic SPGP, which previously showed a positive experimental results as growth promoters [9] [10] (Figure 2), were in silico studied on the effect in the two principal enzymes involved in fungal proliferation (Chitinase B and 1,3-β-Glucanase). Also, the influence against two effectors of infection in plant systems (AVR4 and ECP6) was studied, to prove the potential of SPGP in fungal pests.…”

“…Compounds of the novel family of 22-oxocholestanes (SPGP1, SPGP3, SPGP5), (Figure 1) have been positioned as SPGP alternative due to its comparable or even more potent activity to that of BSs and moreover, can be generated through higher reaction yields. Some 22-oxocholestanes have been successfully tested in rice, red-beans, and maize [9] [10] [11]. Although these compounds have demonstrated an exceptional plant growth promoting effect in in vitro and greenhouse assays, for field tests and future applications it is necessary to predict synergistic effects on beneficial/non-beneficial phytopathogens and to study their effect on the intrinsic defense system of vegetal models.…”