Lapacho类似物的合成及其构效关系。2.碱性萘并[2,3 - b ]呋喃-4,9-二酮的修饰,氧化还原活化和8-羟基萘并[2,3 - b ]噻吩-4,9-二酮对人角质形成细胞过度增殖的抑制作用
摘要:
在寻找抗角质形成细胞过度增生的新型药物时,对线性带电lapacho醌naphtho [2,3 - b ] furan-4,9-dione(7)的基本结构进行了修改。几种杂环稠合萘醌的合成及其与结构和活性的关系,以及这些8-羟基萘[2,3 - b ]噻吩-4,9-二酮之一的全范围2和7取代衍生物(描述图8a)。总共71种类似物中,特别是2-thenoyl取代的26l,2-nicotinoyl取代的26m和2-oxadiazole取代的35a与抗银屑病药anthralin相比具有优势。使用HaCaT细胞作为模型评估了它们抑制角质形成细胞过度增殖的潜能,并与相对较低的对角质形成细胞的膜破坏作用相结合,这是通过从细胞质中释放出乳酸脱氢酶活性来确定的。关于作用机理,研究了在分离的酶法测定中通过一电子还原和二电子还原来还原lapacho醌的氧化还原,并在基于角质形成细胞的过度增殖测定中证实了它们产生超氧化物的潜力。
[EN] NEW NAPHTHO[2,3-B]FURAN DERIVATIVES<br/>[FR] NOUVEAUX DÉRIVÉS DE NAPHTHO[2,3-B]FURANE
申请人:BAN HITOSHI
公开号:WO2018096401A1
公开(公告)日:2018-05-31
The present invention provides a compound useful as a novel antitumor agent targeting a CSC that is important in continuous proliferation of malignant tumor, metastasis and recurrence of cancer, and its resistance to an antitumor agent; a medicament comprising the compound as an active ingredient; a pharmaceutical composition; and an antitumor agent; as well as a method of treating cancer and/or a method of preventing cancer. The present invention provides compounds represented by formula (I) : or pharmaceutically acceptable salts thereof, wherein X is an oxygen atom or sulfur atom; R1 is a hydrogen atom, an alkyl group, or the like; R2 is a halogen atom or the like; R3 is a hydrogen atom, an alkyl group, or the like; m is 0, 1, 2, 3, or 4; and n is 1, 2, 3, or 4 (with the proviso that the sum of m and n is 1, 2, 3, or 4).
The synthesis of kigelinone thiophene analogs and related naphtho[2,3-b]thiophene-4,9-quinones from 2- substituted 4,7-dimethoxybenzo[b]thiophenes via an oxidative deprotection, Diels-Alder, and oxidative aromatization reaction sequence is reported. The 2-substituted naphtho[2,3-b]thiophene-4,9-quinones display significant antitumoractivity in the range IC50 1.1-47 μM on a panel of four distinct human
Synthesis and Structure–Activity Relationships of Lapacho Analogues. 2. Modification of the Basic Naphtho[2,3-<i>b</i>]furan-4,9-dione, Redox Activation, and Suppression of Human Keratinocyte Hyperproliferation by 8-Hydroxynaphtho[2,3-<i>b</i>]thiophene-4,9-diones
of linearly anellated lapacho quinones, naphtho[2,3-b]furan-4,9-dione (7), was modified in the search for novel agents against keratinocyte hyperproliferation. The synthesis and structure–activity relationships of several heterocycle-fused naphthoquinones as well as a full range of 2- and 7-substituted derivatives of one of these, 8-hydroxynaphtho[2,3-b]thiophene-4,9-dione (8a), are described. Out of
在寻找抗角质形成细胞过度增生的新型药物时,对线性带电lapacho醌naphtho [2,3 - b ] furan-4,9-dione(7)的基本结构进行了修改。几种杂环稠合萘醌的合成及其与结构和活性的关系,以及这些8-羟基萘[2,3 - b ]噻吩-4,9-二酮之一的全范围2和7取代衍生物(描述图8a)。总共71种类似物中,特别是2-thenoyl取代的26l,2-nicotinoyl取代的26m和2-oxadiazole取代的35a与抗银屑病药anthralin相比具有优势。使用HaCaT细胞作为模型评估了它们抑制角质形成细胞过度增殖的潜能,并与相对较低的对角质形成细胞的膜破坏作用相结合,这是通过从细胞质中释放出乳酸脱氢酶活性来确定的。关于作用机理,研究了在分离的酶法测定中通过一电子还原和二电子还原来还原lapacho醌的氧化还原,并在基于角质形成细胞的过度增殖测定中证实了它们产生超氧化物的潜力。