描述了一种新颖高效的吡啶并[3',2':4,5]吡咯并[1,2- c ]嘧啶系统的合成,该系统是海洋生物碱的variolin家族的杂环核心。该路线涉及3-溴-2-(溴甲基)吡咯并[2,3- b ]吡啶与甲苯磺酰基甲基异氰化物(TosMIC)在相转移条件下的反应。通过TosMIC与溴甲基吲哚,溴甲基苯并咪唑和溴甲基吡唑的反应,该空前的反应还用于合成一系列新的甲氧基羰基氮杂嘧啶。5-溴-7-甲氧基羰基吡啶并[3',2':4,5]吡咯并[1,2- c的水解和脱羧通过该杂环化方法获得的嘧啶嘧啶并在C5位置安装嘧啶部分,这为完成variolin B的全合成提供了另一种方法。
描述了一种新颖高效的吡啶并[3',2':4,5]吡咯并[1,2- c ]嘧啶系统的合成,该系统是海洋生物碱的variolin家族的杂环核心。该路线涉及3-溴-2-(溴甲基)吡咯并[2,3- b ]吡啶与甲苯磺酰基甲基异氰化物(TosMIC)在相转移条件下的反应。通过TosMIC与溴甲基吲哚,溴甲基苯并咪唑和溴甲基吡唑的反应,该空前的反应还用于合成一系列新的甲氧基羰基氮杂嘧啶。5-溴-7-甲氧基羰基吡啶并[3',2':4,5]吡咯并[1,2- c的水解和脱羧通过该杂环化方法获得的嘧啶嘧啶并在C5位置安装嘧啶部分,这为完成variolin B的全合成提供了另一种方法。
Pyrrolodiazines. 6. Palladium-Catalyzed Arylation, Heteroarylation, and Amination of 3,4-Dihydropyrrolo[1,2-<i>a</i>]pyrazines
作者:Isabel Castellote、Juan J. Vaquero、Javier Fernández-Gadea、Julio Alvarez-Builla
DOI:10.1021/jo048898o
日期:2004.12.1
The palladium-catalyzed Suzuki cross-coupling reaction of arylboronic acids and 6-bromo- and 6,8-dibromo-3,4-dihydropyrrolo[1,2-a]pyrazines afforded 6-substituted and 6,8-disubstituted 3,4-dihydropyrrolo[1,2-a]pyrazines in good yields. Stille and Negishi coupling reactions have been used to prepare 6-heteroaryl-substituted derivatives in moderate yields by employing heteroarylhalides and 6-metalated
芳基硼酸与6-溴-和6,8-二溴-3,4-二氢吡咯并[1,2- a ]吡嗪的钯催化的Suzuki交叉偶联反应得到6-取代的和6,8-二取代的3,4 -二氢吡咯并[1,2- a ]吡嗪产率高。Stille和Negishi偶联反应已用于通过采用杂芳基卤化物和6-金属化3,4-二氢吡咯并[1,2- a ]吡嗪作为反应伙伴,以中等收率制备6-杂芳基取代的衍生物。在钯催化剂Pd 2(dba)3存在下,在6-溴-1-苯基-3,4-二氢吡咯并[1,2- a ]吡嗪的C-6位处也引入了多种环状仲胺。结合BINAP作为配体。该胺化反应是在吡咯环上这种钯催化的转化的少数报道的实例之一,尽管该反应不能扩展到较少的亲核胺。
ANTIBIOTIC SENSITIVITY-RESTORING AND PHOTOSENSITIVE AGENTS
申请人:New Mexico Tech Research Foundation
公开号:US20160304453A1
公开(公告)日:2016-10-20
The present disclosure describes a method to treat conditions, including bacterial infections and cancer, using a photosensitive compound that, upon exposure to white light, can be activated. The photosensitive compound can also interact synergistically with antibiotics used concomitantly to kill drug-resistant bacteria. The photosensitive compounds can also be used to inhibit the proliferation of cancer cells.