23313-48-6Relevant academic research and scientific papers
3β,13-dihydroxylated C20 gibberellins from inflorescences of Rumex acetosa L.
Stokes, Tania S.,Mander, Lewis N.,Croker, Stephen J.,Twitchin, Bruce,Hanke, David E.
, p. 165 - 174 (2007/10/03)
Using full scan GC-MS a wide range of gibberellins (GAs) was identified in the young inflorescences of the dioecious species Rumex acetosa L., consistent with the ubiquitous early 13-hydroxylation pathway in both male and female plants. In addition, R. acetosa is the first species in which all three 3β, 13-dihydroxylated C20-GAs - GA18, GA38 and GA23 - have been identified in the same organism, suggesting an early 3β,13-dihydroxylation biosynthesis pathway in this species. Authentic GA18, GA38 and GA23 were synthesized and their effects and that of GA1, a GA common to both pathways, on the time to inflorescence emergence was investigated. GA1 accelerated the emergence of inflorescences in both male and female plants. In addition some evidence for biological activity per se of the C20-GA38 was obtained.
Metabolism of Steviol and Its Derivatives by Gibberella fujikuroi
Murofushi, Noboru,Shigematsu, Yoshio,Nagura, Shigehiro,Takahashi, Nobutaka
, p. 2305 - 2312 (2007/10/02)
Steviol (ent-13-hydroxykaur-16-en-19-oic acid is metabolized by Gibberella fujikuroi in the presence of inhibitors of gibberellin biosynthesis, such as quaternary ammonium salt-type growth retardants, to afford 7β-hydroxy- and 6β,7β-dihydroxysteviol, gibberellins A1, A18, A19, A53 and 7β,13-dihydroxykaurenolide.Steviol acetate (ent-13-acetoxykaur-16-en-19-oic acid) is also metabolized to the 6β,7β-dihydroxy-derivative and to the 13-acetyl derivatives of gibberellins A17 and A20 and steviol methyl ester (methyl ent-13-hydroxykaur-16-en-19-oate) into the monohydroxy-, dihydroxy- and hydroxyoxo-derivatives.These results indicate a low substrate specificity of the enzymes in the fungus and provide a useful preparative methodology of several important plant gibberellins carrying the 13-hydroxyl group.
