- A short-step convenient synthesis of 2-phenylbenzofuran from 3-phenylcoumarin
-
The reaction mechanism of chemical conversion of (E)-β-[2-hydroxylphenylethylene]benzeneethanol into 2-phenylbenzofuran by DDQ, which involves loss of one carbon unit, was characterized and described. Five naturally occurring 2-phenylbenzofurans of not only the isoflavonoid but also stilbenoid origin were synthesized by use of this chemical scheme, which proved that this new scheme is a useful tool for quick synthesis of 2-phenylbenzofurans.
- Kinoshita, Takeshi,Ichinose, Koji
-
p. 1641 - 1654
(2007/10/03)
-
- Natural Benzofurans. Synthesis of Moracin A and B
-
2-(3,5-Dihydroxyphenyl)-4,6-dimethoxybenzofuran (Moracin A) and 2-(3-hydroxy-5-methoxyphenyl)-5-hydroxy-6-methoxybenzofuran (Moracin B), phytoalexins isolated from diseased mulberry have been synthesized by short routes in which the benzofuran heterocyclic system is formed by an intramolecular Wittig reaction.
- Burke, John M.,Stevenson, Robert
-
p. 451 - 466
(2007/10/02)
-
- A Practical Method for the Preparation of 2-Arylbenzofurans and the Synthesis of Moracin A and B
-
Oxidative rearrangement of 2-benzyloxychalcones 2 with Tl(NO3)3 in methanol to 1,2-diaryl-3,3-dimethoxy-1-propanones 3, alkaline degradation to aryl 2-benzyloxybenzyl ketones 4, debenzylation, and ring closure gave 2-arylbenzofurans 1.In this way moracin A and B (1a, b), further 2-(2,4-dihydroxyphenyl)-5,6-dimethoxybenzofuran (1c) were synthesized.The latter was not identical with a substance isolated from Myroxylon balsamum for which structure 1c was claimed.
- Vu, Binh,Mezey-Vandor, Gabriella,Nogradi, Mihaly
-
p. 734 - 741
(2007/10/02)
-