74994-63-1Relevant academic research and scientific papers
Total synthesis of 3′,3?-binaringenin and related biflavonoids
Sagrera, Gabriel,Seoane, Gustavo
scheme or table, p. 2776 - 2786 (2010/10/19)
The synthesis of natural 3++,3?-binaringenin and four related biflavonoids was performed in good overall yield (15-35%) starting from readily available phloroglucinol and 4-hydroxy- or 4-methoxybenzaldehyde. Preliminary results indicate that some of these compounds have an interesting activity against S. aureus. Georg Thieme Verlag Stuttgart.
Total Syntheses of the meta,meta-Bridged Biphenyls (+/-)-Myricanol and Myricanone, and of an Isomeric Biphenyl Ether, a 14-Oxametaparacyclophane
Whiting, Donald A.,Wood, Andrew F.
, p. 623 - 628 (2007/10/02)
The oxidative coupling of 1,7-bis(hydroxyphenyl)heptanoids (2a,b) has been investigated: C-C coupling to meta,meta-bridged biaryls was not observed, but with thallium tris(trifluoroacetate) C-O coupling occurred forming a 14-oxametaparacyclophane analogous to the natural phenols acerogenin-A and galeon.Intramolecular reductive coupling, using tetrakis(triphenylphosphine)nickel(0), of the bis-iodides (11a,b) derived from phenols (2a,b), leads, after deprotection, to the desired meta,meta-bridged biphenyls myricanone and (+/-)-myricanol, albeit in rather low yield.OO-Dimethylmyricanone and (+/-)-OO-dimethylmyricanol were similarly synthesized.Irradiation (254 nm) in alkaline ethanol of the bromides (11g,h) also induced aryl-aryl coupling to form dibenzylmyricanone and (+/-)-dibenzylmyricanol acetate respectively.
