申请人:Statens Seruminstitut
公开号:US05985935A1
公开(公告)日:1999-11-16
Aromatic compounds, or prodrugs thereof, which contain an alkylating site and which are capable of alkylating the thiol group in N-acetyl-L-cysteine, in particular bis-aromatic .alpha.,.beta.-unsaturated ketones, are used for the preparation of pharmaceutical compositions or medicated feed, food or drinking water for the treatment or prophylaxis of diseases caused by microorganisms or parasites, in particular protozoa such as Leishmannia, Trypanosoma, Toxoplasma, Plasmodium, Pneumocystis, Babesia and Theileria, intestinal protozoa such as Trichormionas and Ciardia; Coccidia such as Eimeria, Isospora, Cryptosporidium; Cappilaria, Microsporidium, Sarcocystis. Trichlodina, Trichoditella, Dacihylogurus, Pseudodacthylogurus, Acantocephalus, Ichthylophtherius, Botrecephalus; and intracellular bacteria, in particular Mycobacterium, Legionella species, Listeria and Salmonella. Preferred compounds have the formula (II): X.sub.m --Ph--C(O)--CH.dbd.CH--Ph--Y.sub.n, wherein each phenyl group (Ph) may be mono- or polysubstituted; X and Y designate AR.sub.H or AZ, wherein A is O, S, NH or N(C.sub.1-6 alkyl), R.sub.H designates aliphatic hydrocarbyl, and Z is H or a masking group which is decomposed to liberate AH; m is 0, 1 or 2, and n is 0, 1, 2 or 3, whereby, when m is 2, then the two X are the same or different, and when n is 2 or 3, then the two or three Y are the same or different, with the proviso that n and m are not both 0. As examples of such compounds, chalcones, e.g. licochalcone A (obtainable i.a. from batches of Chinese licorice root of Glycyrrhiza species, e.g. G. uralensis or G. inflata) as well as hydroxy, alk(en)yl, and/or alk(en)yloxy analogues thereof are active in vitro and/or in vivo against i.a. L. major and P. falciparum.
含有烷基化位点的芳香化合物或其前药,能够烷基化N-乙酰-L-半胱氨酸中的硫醇基团,特别是双芳基α,β-不饱和酮,用于制备用于治疗或预防由微生物或寄生虫引起的疾病的药物组合物或药物饲料、食品或饮用水,特别是原虫,如利什曼原虫、锥虫、弓形虫、疟原虫、肺孢子虫、巴贝斯虫和泰勒原虫,肠道原虫,如毛滴虫和贾第虫;球虫,如艾美利亚球虫、异孢子球虫、隐孢子虫;毛细管虫、微小孢子虫、肉囊虫、三鞭毛虫、三鞭毛虫、卵泡头虫、假卵泡头虫、棘头虫、鱼皮虫、蠕虫头虫;以及细胞内细菌,特别是分枝杆菌、军团菌属、李斯特菌和沙门氏菌。优选化合物具有以下公式(II):X.sub.m --Ph--C(O)--CH.dbd.CH--Ph--Y.sub.n,其中每个苯基(Ph)可以是单取代或多取代;X和Y代表AR.sub.H或AZ,其中A为O、S、NH或N(C.sub.1-6烷基),R.sub.H代表脂肪烃基,Z为H或分解以释放AH的掩蔽基;m为0、1或2,n为0、1、2或3,当m为2时,两个X相同或不同,当n为2或3时,两个或三个Y相同或不同,但n和m不能同时为0。作为这类化合物的例子,香豆素,例如甘草属植物(例如华北甘草或气球甘草)根的批次中可获得的甘草香豆素A,以及其羟基、烯烃基和/或烯烃氧基类似物在体外和/或体内对利什曼原虫和疟原虫具有活性。