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    • 1. 发明申请
    • APPLICATION OF ß-FUNCTIONALIZED DIHYDROXY-CHLORINS FOR PDT
    • ß-功能化二羟基氯在PDT中的应用
    • WO2012012809A3
    • 2012-05-18
    • PCT/US2011047576
    • 2011-08-12
    • CERAMOPTEC GMBHCERAMOPTEC IND INCAICHER DANIELWIEHE ARNOSTARK CHRISTIAN B WALBRECHT VOLKERGRAFE SUSANNA
    • AICHER DANIELWIEHE ARNOSTARK CHRISTIAN B WALBRECHT VOLKERGRAFE SUSANNA
    • C07D487/22A61K31/409A61P17/00A61P35/00
    • A61K31/409C07D487/22
    • The present invention provides methods to obtain biologically active compounds that can be used as photosensitizers for diagnostic and therapeutic applications, particularly for PDT of cancer, infections and other hyperproliferative diseases, fluorescence diagnosis and PDT treatment of a non-tumorous indication such as arthritis, inflammatory diseases, viral or bacterial infections, dermatological, ophthalmological or urological disorders. An embodiment of the present invention consists of a method to synthesize diketo-chlorins as precursors. In yet another embodiment these precursors are converted to ß-unctionalized hydroxy- and dihydroxy-chlorins. Another embodiment is to provide amphiphilic compounds with a higher membrane affinity and increased PDT-efficacy. Another embodiment consists of the formulation of the desired isomer into a liposomal formulation to be injected avoiding undesirable effects like precipitation at the injection site or delayed pharmacokinetics of the tetrapyrrole systems.
    • 本发明提供了获得可用作光敏剂的生物活性化合物的方法,所述光敏剂用于诊断和治疗应用,特别是用于癌症的PDT,感染和其他过度增殖性疾病,非肿瘤性适应症如关节炎,炎症的荧光诊断和PDT治疗 疾病,病毒或细菌感染,皮肤病,眼科或泌尿系统疾病。 本发明的一个实施方案由合成作为前体的二酮 - 二氢卟酚的方法组成。 在又一个实施方案中,将这些前体转化成β-官能化羟基 - 和二羟基 - 二氢卟酚。 另一个实施方案是提供具有较高膜亲和性和增加的PDT-功效的两亲化合物。 另一个实施方案包括将期望的异构体配制成待注射的脂质体制剂,避免不希望的效应,如注射部位的沉淀或四吡咯系统的延迟的药代动力学。
    • 6. 发明公开
    • NEW ORAL FORMULATIONS FOR TETRAPYRROLE DERIVATIVES
    • NEUE ORALE FORMULIERUNGENFÜRTETRAPYRROL-DERIVATE
    • EP2429498A4
    • 2013-02-06
    • EP10772566
    • 2010-04-28
    • CERAMOPTEC GMBHBIOLITEC RES GMBH
    • GRAEFE SUSANNANIFANTIEV NIKOLAYALBRECHT VOLKERNEUBERGER WOLFGANGSCHEGLMANN DIETRICHGERHARD WIELANDWIEHE ARNOFAHR ALBERT
    • A61K9/16A61K9/127A61K9/20A61K31/122A61K31/409A61K31/495A61P31/04A61P35/00
    • A61K31/409A61K9/0065A61K9/127A61K9/1271A61K31/498
    • Oral formulations and method of formulating photosensitive agents for oral administration during photodynamic therapy (PDT) and Antimicrobial photodynamic therapy (APDT) treatment are presented. The oral formulated photosensitizers show increased solubility and permeability, thus improving the bioavailability of photosensitizers at the treatment site. An orally administered photosensitizer is suitably formulated for mucosal adhesion and absorption via gastrointestinal mucosal membranes. Oral formulation provided herein use lipids and known proteins as carriers for photosensitizers by oral route. Carriers for encapsulating preselected photosensitizers include conventional liposomes, pegylated liposomes, nanoemulsions, nanocrystrals, nanoparticles, fatty emulsions, lipidic formulations, hydrosols, SMEDDS, Alpha-Feto protein (AFP), and Bovine-Serum-Albumin (BSA), fatty emulsions, hot-melt-extrudates and nanoparticles. The oral formulation, in case of a hydrophobic photosensitizer in the present invention, is stabilized using suitable surfactants/solubilizers thus preventing aggregation of the drug in the stomach and until it is absorbed in the duodenum and the small intestine. Oral formulations can be administered in the form of liquid, capsule, tablet, powder, paste or gel. Formulated drugs can be administered orally as one single dose or in multiple doses before administering PDT. In one embodiment Temoporfin (m-THPC) is used as a photosensitizer in the oral formulations. Temoporfin like many hydrophobic photosensitizers are especially suitable to be administered orally because there is no known enzyme system in the mammalian body which can metabolize Temoporfin or similar photosensitizers. Temoporfin can reach the blood system unchanged and fully active after absorption of the formulation in the gastrointestinal tract.
    • 提出了光动力治疗(PDT)和抗微生物光动力治疗(APDT)治疗中配制口服光敏剂的口服制剂和方法。 口服配制的光敏剂显示增加的溶解度和渗透性,从而提高光敏剂在治疗部位的生物利用度。 口服给药的光敏剂适于配制用于粘膜粘附和通过胃肠粘膜吸收。 本文提供的口服制剂通过口服途径使用脂质和已知蛋白质作为光敏剂的载体。 用于封装预选光敏剂的载体包括常规脂质体,聚乙二醇化脂质体,纳米乳剂,纳米胶体,纳米颗粒,脂肪乳剂,脂质制剂,水溶胶,SMEDDS,Alpha-Feto蛋白(AFP)和牛血清白蛋白(BSA),脂肪乳剂,热 熔融挤出物和纳米颗粒。 在本发明的疏水性光敏剂的情况下,口服制剂使用合适的表面活性剂/增溶剂稳定,从而防止药物在胃中的聚集,直到其被吸收到十二指肠和小肠中。 口服制剂可以以液体,胶囊,片剂,粉末,糊剂或凝胶的形式施用。 配制药物可以在施用PDT之前以一次剂量或多次剂量口服给药。 在一个实施方案中,Temoporfin(m-THPC)用作口服制剂中的光敏剂。 类似于许多疏水性光敏剂的Temoporfin特别适合于口服给药,因为在哺乳动物体内没有可以代谢Temoporfin或类似光敏剂的已知的酶系统。 Temoporfin可以在胃肠道吸收制剂后达到血液系统不变和充分活性。