Total synthesis of new indolo[2,3-a]quinolizine alkaloids sempervirine type, potential pharmaceuticals
作者:Teodozja M. Lipińska
DOI:10.1016/j.tet.2006.03.085
日期:2006.6
the AB–DE synthons, has been obtained. The final stages: desulfuration, and formation of the C-ring via the Gribble method have led to the expected zwitterionic alkaloids. Model syntheses of the indolopyridocoline and its methoxy analogue from 2-acetylpyridine have been performed for investigation of the microwave-induced Fischer synthesis of sensitive indoles and for obtaining compounds for comparative
从5-乙酰基-3-甲硫基-1分五个步骤详细阐述了两个系列的新五环杂环[ g ]吲哚并[2,3- a ]喹诺嗪生物碱(改性的sempervirine具有广泛的活性)的全合成。,2,4-三嗪(得自简单的无环材料)。在两个关键步骤中:电子逆需求Diors–Alder反应与环烯胺反应的前体,以及随后的3-乙酰基-1-甲基硫代环烷基的费歇尔吲哚化反应[ c已经获得了AB-DE合成子]吡啶。最后阶段:脱硫和通过Gribble方法形成C环已导致预期的两性离子生物碱。已经进行了吲哚吡咯啉及其从2-乙酰基吡啶的甲氧基类似物的模型合成,以研究敏感的吲哚的微波诱导费歇尔合成,并获得用于光谱数据比较研究的化合物。
A Concise Route to a Key Intermediate in the Total Synthesis of Sempervirine<sup>1</sup>
作者:Andrzej Rykowski、Teodozja Lipińska
DOI:10.1080/00397919608003843
日期:1996.12
Diels-Alder reaction of 5-acetyl-3-methylthio-1,2,4-triazine 3 with 1-pyrrolidino-1-cyclohexene afforded 3-acetyl-1-methylthio-5,6,7,8-teterahydroisoquinoline 4 which was readily converted into target 2-(3-(5,6,7,8-tetrahydroisoquinolinyl)) 6 via Fisher synthesis followed by reductive cleavage of the methylthio group in 5.
GRIBBLE, GORDON W.;BARDEN, TIMOTHY C.;JOHNSON, DAVID A., TETRAHEDRON, 44,(1988) N 11, 3195-3202
作者:GRIBBLE, GORDON W.、BARDEN, TIMOTHY C.、JOHNSON, DAVID A.
DOI:——
日期:——
A directed metalation route to the zwitterionic indole alkaloids.
作者:Gordon W. Gribble、Timothy C. Barden、David A. Johnson
DOI:10.1016/s0040-4020(01)85951-2
日期:1988.1
3-a]quinolzine(1)ring system. Application of this methodology to 2-(2-pyridinyl)indole 17, which is prepered via Taylor-Boger triazine Dieis-Alder annulation chemistry, affords the zwitterionic indole alkaloid sempervirine (3).