2'-羟基查尔酮是天然存在的化合物,具有多种生物活性。为了描述有利于抗氧化和脂氧合酶 (LOX) 抑制活性的结构特征,提出了一系列在 A 环和 B 环上带有不同取代基的 2'-羟基查耳酮的设计、合成和生物活性概况。在所有合成的衍生物中,B环上带有两个羟基取代基的查尔酮4b具有最佳的综合活性(DPPH自由基清除能力为82.4%,脂质过氧化抑制率为82.3%,LOX抑制值令人满意(IC 50 = 70) μM),在 A 环上具有甲氧基亚甲基取代基,在 B 环上具有三个甲氧基,表现出最有希望的 LOX 抑制活性(IC 50 = 45 μM)。观察到最活跃的化合物3c及其类似物3b与 LOX A 常见的氢键相互作用模式的关键结合特征,即芳环 A 的羟基和羰基分别朝向 Asp768 和 Asn128。如图3c所示,大的(-OMOM)基团似乎不参与直接结合,但其诱导能够在芳环B的甲氧基与Trp130和Gly247之间形成H键的取向。
Synthetic Flavonoids and Pharmaceutical Compositions and Therapeutic Methods of Treatment of HIV infection and other pathologies
申请人:Redda Kinfe
公开号:US20120264820A1
公开(公告)日:2012-10-18
A compound, pharmaceutical composition and method for the treatment of mammals wherein the active therapeutic agent is a compound having the structure:
wherein: R
1
is an electronegative substituent,
R
2
is R
1
or alkyl,
R
3
is H or O-alkyl,
R
4
and R
5
are the same or different and are alkyl and
R
6
is H or OH.
Synthetic Flavonoids and Pharmaceutical Compositions and Therapeutic Methods of Treatment of Cancer and other Pathologies
申请人:Redda Kinfe
公开号:US20090312407A1
公开(公告)日:2009-12-17
A compound, pharmaceutical composition and method for the treatment of mammals wherein the active therapeutic agent is a compound having the structure:
wherein:
R
1
is an electronegative substituent,
R
2
is R
1
or alkyl,
R
3
is H or O-alkyl,
R
4
and R
5
are the same or different and are alkyl and
R
6
is H or OH.