基于萘并[2,3 - b ]呋喃-4,9-二酮骨架的一系列萘醌,例如(-)-5-羟基-2-(1'-羟乙基)萘并[2,3- b ]呋喃-4,9-二酮(1)及其位置异构体(-)-8-羟基-2-(1'-羟乙基)萘并[2,3 - b ]呋喃-4,9-二酮(2),是在塔伯布烟草(Tabebuia avellanedae)内树皮中发现的次级代谢产物,是立体选择性合成的,并与相应的对映异构体的生物学活性一起进行了生物活性评估。化合物1表现出对几种人类肿瘤细胞系的有效抗增殖作用,但对某些人类正常细胞系的作用远低于丝裂霉素。另一方面,其对映异构体(R)-1对上述肿瘤细胞系的活性低于1。2对所有肿瘤细胞系的抗增殖作用显着降低。这些结果表明,在C-5处酚羟基的存在对于增加抗增殖作用非常重要。此外,1个也显示出比2个更高的化学预防活性,而1和2之间没有显着差异。抗菌活性。两种化合物均显示出适度的抗真菌和抗菌活性(
基于萘并[2,3 - b ]呋喃-4,9-二酮骨架的一系列萘醌,例如(-)-5-羟基-2-(1'-羟乙基)萘并[2,3- b ]呋喃-4,9-二酮(1)及其位置异构体(-)-8-羟基-2-(1'-羟乙基)萘并[2,3 - b ]呋喃-4,9-二酮(2),是在塔伯布烟草(Tabebuia avellanedae)内树皮中发现的次级代谢产物,是立体选择性合成的,并与相应的对映异构体的生物学活性一起进行了生物活性评估。化合物1表现出对几种人类肿瘤细胞系的有效抗增殖作用,但对某些人类正常细胞系的作用远低于丝裂霉素。另一方面,其对映异构体(R)-1对上述肿瘤细胞系的活性低于1。2对所有肿瘤细胞系的抗增殖作用显着降低。这些结果表明,在C-5处酚羟基的存在对于增加抗增殖作用非常重要。此外,1个也显示出比2个更高的化学预防活性,而1和2之间没有显着差异。抗菌活性。两种化合物均显示出适度的抗真菌和抗菌活性(
[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).
Potential Antipsoriatic Agents: Lapacho Compounds as Potent Inhibitors of HaCaT Cell Growth
作者:Klaus Müller、Andreas Sellmer、Wolfgang Wiegrebe
DOI:10.1021/np990139r
日期:1999.8.1
the human keratinocyte cell line HaCaT. With an IC(50) value of 0.7 microM, beta-lapachone (4) displayed activity comparable to that of the antipsoriatic drug anthralin. 2-Acetyl-8-hydroxynaphtho[2,3-b]furan-4,9-dione (7), which was prepared in a four-step synthesis from 2,8-dihydroxy-1, 4-naphthoquinone, was the most potent inhibitor among the known lapacho-derived compounds and inhibited cell growth
A series of naphthoquinones based on the naphtho[2,3-b]furan-4,9-dione skeleton such as (−)-5-hydroxy-2-(1′-hydoxyethyl)naphtho[2,3-b]furan-4,9-dione (1) and its positional isomer, (−)-8-hydroxy-2-(1′-hydoxyethyl)naphtho[2,3-b]furan-4,9-dione (2), which are secondary metabolites found in the inner bark of Tabebuia avellanedae, were stereoselectively synthesized and their biological activities were
基于萘并[2,3 - b ]呋喃-4,9-二酮骨架的一系列萘醌,例如(-)-5-羟基-2-(1'-羟乙基)萘并[2,3- b ]呋喃-4,9-二酮(1)及其位置异构体(-)-8-羟基-2-(1'-羟乙基)萘并[2,3 - b ]呋喃-4,9-二酮(2),是在塔伯布烟草(Tabebuia avellanedae)内树皮中发现的次级代谢产物,是立体选择性合成的,并与相应的对映异构体的生物学活性一起进行了生物活性评估。化合物1表现出对几种人类肿瘤细胞系的有效抗增殖作用,但对某些人类正常细胞系的作用远低于丝裂霉素。另一方面,其对映异构体(R)-1对上述肿瘤细胞系的活性低于1。2对所有肿瘤细胞系的抗增殖作用显着降低。这些结果表明,在C-5处酚羟基的存在对于增加抗增殖作用非常重要。此外,1个也显示出比2个更高的化学预防活性,而1和2之间没有显着差异。抗菌活性。两种化合物均显示出适度的抗真菌和抗菌活性(