Biosynthesis of the Indole Alkaloids. Cell-free Systems fromCatharanthus roseus Plants
作者:James P. Kutney、Lewis S. L. Choi、Toshio Honda、Norman G. Lewis、Toshitsugu Sato、Kenneth L. Stuart、Brian R. Worth
DOI:10.1002/hlca.19820650716
日期:1982.11.3
Cell-free systems from Catharanthus roseus plants are utilized for various studies relating to the biosynthesis of indolealkaloids. Tryptamine (5) and secologanin (6), two fundamental building units, are shown to be incorporated into the alkaloidvindoline (7). In another study, catharanthine (18) and vindoline (7) are utilized by this enzyme system and coupled to the important bisindole biointermediate
New Insights into the Mechanism and an Expanded Scope of the Fe(III)-Mediated Vinblastine Coupling Reaction
作者:Hiroaki Gotoh、Justin E. Sears、Albert Eschenmoser、Dale L. Boger
DOI:10.1021/ja306229x
日期:2012.8.15
catharanthine in an Fe(III)-mediated coupling reaction, an examination of the key structural features of catharanthine required for participation in the reaction, and the development of a generalized indole functionalization reaction that bears little structural relationship to catharanthine itself are detailed. In addition to providing insights into the mechanism of the Fe(III)-mediated coupling reaction
Triarylaminium Radical Cation Promoted Coupling of Catharanthine with Vindoline: Diastereospecific Synthesis of Anhydrovinblastine and Reaction Scope
作者:Byron A. Boon、Dale L. Boger
DOI:10.1021/jacs.9b06968
日期:2019.9.11
vindoline is disclosed, enlisting tris(4-bromophenyl)aminium hexachlororantimonate (BAHA, 1.1 equiv) in aqueous 0.05 N HCl/trifluoroethanol (2-10:1) at room temperature (25 °C), that provides anhydrovinblastine in superb yield (85%) with complete control of the newly formed quaternary C16' stereochemistry. A definition of the scope of aromatic substrates that participate with catharanthine in the BAHA-mediated
公开了一种新的三芳基胺自由基阳离子促进长春花碱与文多林的偶联,在室温 (25°C) 下,在 0.05 N HCl/三氟乙醇 (2-10:1) 水溶液中加入三(4-溴苯基)胺六氯锑酸盐(BAHA,1.1 当量) ),以极好的收率 (85%) 提供脱水长春碱,并完全控制新形成的四元 C16' 立体化学。公开了在 BAHA 介导的非对映选择性偶联反应中与长春花碱一起参与的芳香底物的范围的定义,以及参与反应的长春花碱以外的简化吲哚底物的范围,这些底物确定了参与反应所需的关键结构特征,提供了广义的吲哚与长春花碱或文多林几乎没有结构关系的功能化反应。
Process for the preparation of bisindole alkaloid derivatives
申请人:Indena S.p.A.
公开号:EP2135872A1
公开(公告)日:2009-12-23
A process for the coupling of catharantine and vindoline catalyzed by Laccases is described. The coupling produces anhydrovinblastine and anhydrovinblastine eniminium, which can be transformed to vinblastine or vinorelbine.
Dimericindolealkaloid, anhydrovinblastine, which can be obtained from catharanthine and vindoline in a high yield, was converted stereoselectively into vinblastine through alternating oxidation-reduction with oxygen and NaBH(3)CN in the presence of anti-vinblastine monoclonal antibody.