58084-80-3

Upstream product

• 78-79-5 isoprene 
• 90486-66-1 6'-acetoxy-2',4-bis(benzyloxy)-2,5-dimethoxy-2,2-dimethyldihydropyrano<5,6-c>chalcone 
• 90486-65-0 6-acetyl-5-benzyloxy-2,2-dimethyl-7-tosyloxychroman 
• 90486-64-9 6-acetyl-5-hydroxy-2,2-dimethyl-7-tosyloxychroman 
• 90486-59-2 6-acetyl-5-benzyloxy-7-hydroxy-2,2-dimethylchroman 
• 24128-11-8 6-Acetyl-5,7-dihydroxy-3,4-dihydro-2,2-dimethyl-2H-<1>benzopyran 
• 90486-66-1 Acetic acid 5-benzyloxy-6-[(E)-3-(4-benzyloxy-2,5-dimethoxy-phenyl)-acryloyl]-2,2-dimethyl-chroman-7-yl ester 
• 124360-58-3 6-acetyl-5-methoxy-2,2-dimethyl-7-tosyloxy-4-chromanone 
• 124360-57-2 6-acetyl-5-hydroxy-2,2-dimethyl-7-tosyloxy-4-chromanone 
• 124360-65-2 2,3-dihydro-5-hydroxy-7-(4-hydroxy-2,5-dimethoxyphenyl)-2,2-dimethyl-4H,6H-benzo<1,2-b:5,4-b'>dipyran-4,6-dione 
• 124360-56-1 6-acetyl-5,7-dihydroxy-2,2-dimethyl-4-chromanone 
• 480-66-0 2,4,6-trihydroxyacetophenone 
• 541-47-9 3-Methylbutenoic acid 
• 124360-69-6 7-<2,5-dimethoxy-4-(tosyloxy)phenyl>-2,2-dimethyl-5-tosyloxy-2H,6H-benzo<1,2-b:5,4-b'>dipyran-6-one 

Downstream Products

• 58084-83-6 2',4',5,5'-tetramethoxy-2,2-dimethylpyrano<5,6-g>isoflavone 
• 58084-81-4 4',5-diacetoxy-2',5'-dimethoxy-2,2-dimethylpyrano<5,6-g>isoflavone 

Relevant academic research and scientific papers

VIRIDIFLORIN, AN ISOFLAVONE FROM TEPHROSIA VIRIDIFLORA

Tephrosia viridiflora; Leguminosae; prenyl isoflavone; 4',5,7-trihydroxy-2',5'-dimethoxy-6-prenylisoflavone; viridiflorin.A new isoflavone, viridiflorin, has been isolated from Tephrosia viridiflora.Its structure was established as 4',5,7-trihydroxy-2',5'-dimethoxy-6-prenylisoflavone based on spectral evidence and chemical transformation.

Synthesis of Pyranoisoflavones from Pyronochalcones: Synthesis of Elongatin and Its Angular Isomer

Elongatin (4',5-dihydroxy-2',5'-dimethoxy-2'',2''-dimethylpyranoisoflavone) was synthesized by an oxidative rearrangement of the corresponding pyronochalcone with thallium(III) nitrate and a regioselective reduction of 7-(4-benzoyloxy-2,5-dimethoxyphenyl)-2,3-dihydro-2,2-dimethyl-5-tosyloxy-4H,6H-benzodipyran-4,6-dione with sodium borohydride-palladium chloride, followed by dehydration of the resultant alcohol and hydrolysis.Its angular isomer (4',5-dihydroxy-2',5'-dimethoxy-2'',2''-dimethylpyranoisoflavone) was also synthesized from the corresponding pyronochalcone in a similar manner.

A CONVENIENT SYNTHESIS OF A LINEAR PYRANOISOFLAVONE: SYNTHESIS OF ELONGATIN AND ITS ANGULAR ISOMER

Linear 4',5-dihydroxy-2',5'-dimethoxy-2",2"-dimethyl-dihydropyranoisoflavone, which had been prepared from 6-acetyl-5-benzyloxy-7-hydroxy-2,2-dimethylchroman via four steps, was dehydrogenated with DDQ to give elongatin.Its angular isomer was als