55812-47-0

Upstream product

• 59102-37-3 ent-10β,15β-dihydroxy-20-norgibberell-16-ene-7,19-dioic acid 7-methyl ester 19,10-lactone 
• 2112-08-5 gibberellin A₉ 7-methyl ester 
• 427-77-0 GA₉ 
• 97344-14-4 ent-10β,15β-dihydroxy-20-norgibberell-16-ene-7,19-dioic acid 7,15;19,10-dilactone 
• 97344-12-2 15α-hydroxyGA₉ 7-phenacyl ester 
• 97344-10-0 C₂₇H₃₀O₅ 
• 427-77-0 Gibberellin-A⁽⁹⁾ 
• 97344-13-3 ent-10-hydroxy-20-nor-15-oxogibberell-16-ene-7.19-dioic acid 19,10-lactone-7-phenacyl ester 
• 139113-40-9 ent-10β-hydroxy-15-oxo-20-norgibberell-16-ene-7,19-dioic acid 7-methyl ester 19,10-lactone 
• 59102-37-3 15β-hydroxy-gibberellin A₉ methyl ester 

Relevant academic research and scientific papers

Hydrolysis of Gibberellin 7-Methyl Esters: Anchimeric Assistance by a 15-Alcohol

The neighbouring group effects of 15α- and 15β-hydroxy groups on the rate of hydrolysis of gibberellin 7-methyl esters are described.The presence of a 15-alcohol increases the rate of ester hydrolysis and a 15α- has a greater influence than a 15β-alcohol.The 15α-alcohol may be effective either through hydrogen bonding between the hydroxy proton and the ester carbonyl thus stabilising the tetrahedral intermediate formed on hydrolysis of the ester, or via 7,15α-lactonisation followed by hydrolysis of the lactone.The 15β-hydroxy may act through hydrogen bonding of a water molecule between the proton of the 15β-alcohol and the 7-carbonyl function.The effect is enhanced by the presence of a 13-acetate.

Partail Syntheses of Gibberellins A45 and A63

The structures of the higher plant 15β-hydroxy-C19-gibberellins, GA45 and GA63, have been established by rational synteses from gibberellins A9 and A4 respectively.