76166-59-1Relevant academic research and scientific papers
Regioselective Synthesis of Prenylisoflavones. Syntheses of Lupiwighteone, Lupiwighteone Hydrate and Related Compounds
Tsukayama, Masao,Li, He,Nishiuchi, Masaki,Takahashi, Masahumi,Kawamura, Yasuhiko
, p. 1181 - 1196 (2007/10/03)
The palladium-catalyzed coupling reaction of 4',5.7-tris(benzyloxy)-8-iodoisoflavone 11, synthesized from the 3'-iodochalcone 8, with 2-methyl-3-butyn-2-ol gave the corresponding 8-(3-hydroxy-3-methylbutynyl)isoflavone 12.Catalytic hydrogenation of 12 gav
SYNTHESIS OF 4',5- AND 3',4',5-OXYGENATED PYRANOISOFLAVONES: ALPINUM ISOFLAVONE AND RELATED COMPOUNDS, AND REVISED STRUCTURE OF DERRONE
Tsukayama, Masao,Kawamura, Yasuhiko,Tahara, Hideo
, p. 505 - 516 (2007/10/02)
Alpinumisoflavone (4',5-dihydroxy-2",2"-dimethylpyranoisoflavone) (1a) was synthesized by regioselective reduction of 7-(4-hydroxyphenyl)-2,3-dihydro-5-methoxy-2,2-dimethyl-4H,6H-benzodipyran-4,6-dione (15a) with NaBH4 and dehydrati
SYNTHESIS OF ALPINUM ISOFLAVONE, DERRONE AND RELATED PYRANOISOFLAVONES
Rao, K. S. R. Mohan,Iyer, C. S. Rukmani,Iyer, P. R.
, p. 3015 - 3020 (2007/10/02)
Reaction of phenacylchroman 1 with ethoxyalyl chloride in pyridine followed by hydrolysis of the resulting esters 2 and 3 and decarboxylation of the acids 4 and 5, gave dihydro-4'-O-methyl alpinum isoflavone 6 and 4'-O-methylderrone 7 respectively.Similarly 8 gave 11 which was selectively demethylated to 7.DDQ, dehydrogenation of 6, 7 and 11 gave 14, 15 and 17.Demethylation of 6 and 7 followed by dehydrogenation gave alpinum isoflavone 18 and derrone 19.
