67047-07-8

Upstream product

• 67047-05-6 4-oxo-2-phenyl-4H-1-benzopyran-5,6,7-triyl triacetate 
• 491-67-8 5,6,7-trihydroxy-2-phenyl-4H-1-benzopyran-4-one 
• 67047-06-7 7-(benzyloxy)-4-oxo-2-phenyl-4H-1-benzopyran-5,6-diyl diacetate 

Downstream Products

• 21967-41-9 baicalin 
• 57396-78-8 Oroxin A 
• 74304-67-9 5,6-Diacetoxy-7-hydroxyflavon-7-O-(2,3,4-tri-O-acetyl-β-D-glucopyranosiduronsaeure-methylester) 

Relevant academic research and scientific papers

Concise synthesis and antidiabetic activity of natural flavonoid glycosides, oroxins C and D, isolated from the seeds of Oroxylum indium

The first concise synthesis of natural flavonoid glycosides, oroxins C (1) and D (2), which were isolated from the seeds of Oroxylum indicum, was efficiently achieved by a convergent strategy. The synthesized natural products 1 and 2 were evaluated for th

Preparation method of 5,6-diacetoxy-7-hydroxyflavone

The invention discloses a preparation method of 5,6-diacetoxy-7-hydroxyflavone. The preparation method comprises the following steps: in the presence of a solvent, mixing 5,6,7-triacetoxyflavone, pyridine hydrochloride and silica gel; and then, after the solvent is removed, carrying out a reaction at a first temperature to obtain the 5,6-diacetoxy-7-hydroxyflavone. According to the preparation method disclosed by the invention, the position 7 of the 5,6,7-triacetoxyflavone is subjected to a deacetylation reaction in a high-selectivity manner by utilizing the synergistic effect of silica gel and pyridine hydrochloride, reagents with high odor irritation are not used, and operation is simple.

Synthese von Baicalin und einiger anderer Baicalein-glycoside

The 6- and 7-O-β-glucopyranosides 14 and 7 and the 6- and 7-O-β-glucopyranosiduronic acids 18 and 9 of baicalein (1) have been synthesized. 9 was identical with baicalin but 14 and tetuin, further 18 and a "baicalin-6-glucuronide" from Oroxylum indicum were different.