Synthesis of a Range of Polyhydroxy 8-Aryl Flavones
摘要:
The 8-iodo flavones formed by cyclization of benzyl-protected chalcones with iodine in dimethyl sulfoxide have been transformed by a Suzuki coupling reaction into a variety of 8-aryl derivatives. Deprotection with boron tribromide has generated a family of new 8-aryl flavones containing four to eight hydroxyl groups.
Analogs of green tea polyphenols as chemotherapeutic and chemopreventive agents
申请人:——
公开号:US20040110790A1
公开(公告)日:2004-06-10
Novel compounds useful as chemotherapeutic and chemopreventive agents are provided. The compounds are analogs of polyphenol catechins that occur in green tea, such as epigallocatichin-3-gallate (EGCG), and have the structure of formula (I)
1
wherein R
1
through R
11
are defined herein. Preferred R
4
moieties are selected from O, S, NH and CH
2
, and in exemplary compounds, R
4
is O and R
5
is a tri-substituted aroyloxy substituent, such as a 3,4,5-substituted benzoyloxy group. Pharmaceutical compositions are provided as well, as are methods of chemotherapy and chemoprevention.
Synthesis of a Range of Polyhydroxy 8-Aryl Flavones
作者:Lesley Larsen、Dong Hee Yoon、Rex T. Weavers
DOI:10.1080/00397910802710682
日期:2009.7.21
The 8-iodo flavones formed by cyclization of benzyl-protected chalcones with iodine in dimethyl sulfoxide have been transformed by a Suzuki coupling reaction into a variety of 8-aryl derivatives. Deprotection with boron tribromide has generated a family of new 8-aryl flavones containing four to eight hydroxyl groups.