Synthesis of Desaza Analogues of Annomontine and Canthin-4-one Alkaloids
作者:Benjamin Strödke、André P. Gehring、Franz Bracher
DOI:10.1002/ardp.201400328
日期:2015.2
transformation reactions with guanidine. Only after N‐protection (methyl or 2‐(trimethylsilyl)ethoxymethyl group), 2‐desazaanalogues of the alkaloidannomontine are accessible via the enaminoketones obtained by condensation with Bredereck's reagent. One of the annomontineanalogues is an inhibitor of the Plasmodium falciparum CDC‐like kinases (CLK) and shows antimalarial activity.
4-Oxo-5,6-dihydro-4H-pyrido[3,2,1-jk]carbazole and Its Aralkylidene Derivatives
作者:HENRY RAPOPORT、DOROTHY M. BOWMAN
DOI:10.1021/jo01085a010
日期:1959.3
PYRIDOCARBAZOLE DERIVATIVES HAVING cGMP-PDE INHIBITORY EFFECT
申请人:MOCHIDA PHARMACEUTICAL CO., LTD.
公开号:EP0985671B1
公开(公告)日:2003-04-02
Canthin-4-ones as Novel Antibacterial Agents
作者:Tim Tremmel、Andreas Puzik、André P. Gehring、Franz Bracher
DOI:10.1002/ardp.201600137
日期:2016.9
Based on the chemotype of canthin‐4‐one alkaloids with moderate antimicrobial activity, a collection of variously substituted canthin‐4‐ones and desaza analogs were synthesized. Key steps in the syntheses were regioselective halogenations of (desaza) canthin‐4‐one, followed by Pd‐catalyzed cross‐coupling reactions. The in vitro screening for antimicrobial activity revealed that two 5‐substituted canthin‐4‐ones
A one-pot, two-step synthesis of 3-deazacanthin-4-ones via sequential Pd-catalyzed Suzuki-Miyaura and Cu-catalyzed Buchwald-Hartwig reactions
作者:Emmanouil Broumidis、Panayiotis A. Koutentis
DOI:10.1016/j.tetlet.2017.05.076
日期:2017.7
yields from 8-iodoquinolones and 2-chloro(het)arylboronic acids. The strategy involves construction of the central B ring via concomitant Pd-catalyzed Suzuki-Miyaura CC and Cu-catalyzed Buchwald-Hartwig CN coupling reactions.
从8-碘喹诺酮和2-氯(杂)芳基硼酸快速制备了3-Deazantanthin-4-one和9个类似物,包括8-aza类似物。该策略涉及通过伴随的Pd催化的Suzuki-Miyaura C C和Cu催化的Buchwald-Hartwig C N偶联反应来构建中心B环。