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    • 12. 发明授权
    • Pseudobase benzo[c]phenanthridines with improved efficacy, stability, and safety
    • 具有改善功效,稳定性和安全性的假碱性苯并[c]菲啶
    • US07531550B2
    • 2009-05-12
    • US11831498
    • 2007-07-31
    • Kenneth ShawMingbao Zhang
    • Kenneth ShawMingbao Zhang
    • A61K31/4741C07D491/113
    • C07D491/04
    • Pseudobase benzo[c]phenanthridines and the pharmaceutically acceptable salts thereof of Formula I are provided herein. The variables R, R1, R2, R3, and R4 are defined herein. Certain pseudobase benzo[c]phenanthridines provided herein act as prodrugs, targeting the parent benzo[c]phenanthridinium alkaloid to hydrophilic or hydrophobic regions in the body. Pharmaceutical compositions comprising a pseudobase benzo[c]phenanthridine and a carrier, excipient, or diluent are provided herein. Methods of treating or preventing microbial, fungal and or viral infections and methods of treating diseases and disorders responsive to protein kinase C modulation, topoisomerase I, and/or topoisomerase II modulation are also provided.
    • 本文提供了假碱性苯并[c]菲啶及其式I的药学上可接受的盐。 变量R,R1,R2,R3和R4在本文中定义。 本文提供的某些假碱性苯并[c]菲啶用作前药,将母体苯并[c]菲啶生物碱靶向体内的亲水或疏水区域。 本文提供了包含假碱性苯并[c]菲啶和载体,赋形剂或稀释剂的药物组合物。 还提供了治疗或预防微生物,真菌和/或病毒感染的方法以及治疗对蛋白激酶C调节,拓扑异构酶I和/或拓扑异构酶II调节的疾病和病症的方法。
    • 17. 发明授权
    • Hydroxythiol grignard reaction synthesis
    • 羟基硫醇格氏反应合成
    • US6054623A
    • 2000-04-25
    • US215691
    • 1998-12-18
    • David RyckmanMingbao ZhangGuohua Chen
    • David RyckmanMingbao ZhangGuohua Chen
    • C07C319/02C07C323/20C07F7/18
    • C07C319/02C07F7/1892Y02P20/55
    • A method for the preparation of hydroxythiol compounds by reacting a hydroxyl-protected halide compound having the structure:X--R--OPgwith magnesium in a Grignard-suitable solvent to form a hydroxyl-protected magnesium halide compound, wherein R is selected from substituted or unsubstituted aliphatic radicals, substituted or unsubstituted cyclic aliphatic radicals, substituted or unsubstituted aromatic radicals, substituted or unsubstituted araliphatic radicals and substituted or unsubstituted heterocyclic radicals; Pg is a protecting group; and X is selected from the group consisting of F, Cl, Br and I; then reacting said hydroxyl-protected magnesium halide compound with sulfur in the Grignard-suitable solvent to form a hydroxyl-protected thiomagnesium halide compound; and hydrolyzing the protected hydroxyl group to form a hydroxythiomagnesium halide compound and converting the thiomagnesium halide to a thiol; wherein the protecting group is selected so that species formed by the de-protection of the protecting group are inert toward thiols, or the method further includes the step of removing the protecting group species formed by de-protection of the hydroxyl group from the reaction mixture before converting the thiomagnesium halide to a thiol.
    • 一种通过在格氏合适的溶剂中使具有结构:XR-OPg与羟基保护的卤化合物与镁反应以形成羟基保护的卤化镁化合物来制备羟基硫醇化合物的方法,其中R选自取代或未取代的脂族基团 取代或未取代的环脂族基团,取代或未取代的芳族基团,取代或未取代的芳脂族基团和取代或未取代的杂环基团; Pg是保护组; X选自F,Cl,Br和I; 然后使所述羟基保护的卤化镁化合物与格氏合适的溶剂中的硫反应形成羟基保护的卤化卤化镁化合物; 水解保护的羟基以形成羟基卤化镁化合物并将卤化硫化镁转化为硫醇; 其中选择保护基,使得通过保护基去保护形成的物质对硫醇是惰性的,或者该方法还包括从反应混合物中除去由羟基脱保护形成的保护基物种的步骤 之前将硫化镁卤化物转化为硫醇。