Structural analogues of quinoline alkaloids: Straightforward route to [1,3]dioxolo[4,5‐
<i>c</i>
]quinolines with antibacterial properties
作者:Radim Horák、Kamil Kořistek、Veronika Šamšulová、Ludmila Slaninová、Martin Grepl、Lubomír Kvapil、Petr Funk、Pavel Hradil、Miroslav Soural
DOI:10.1002/jhet.3886
日期:2020.4
Compounds bearing [1,3]dioxolo‐quinoline scaffolds have been found in quinoline‐based natural products; the only exception is the [1,3]dioxolo[4,5‐c]quinoline moiety with a rare occurrence in both natural and synthetic derivatives. In this article, we report the preparation of diversely substituted and functionalized [1,3]dioxolo[4,5‐c]quinolines using [1,3]dioxolo[4,5‐c]quinoline‐4‐carbaldehyde (DQC)
在基于喹啉的天然产物中发现了带有[1,3]二氧杂喹啉骨架的化合物。唯一的例外是[1,3] dioxolo [4,5- c ]喹啉部分,在天然和合成衍生物中均很少见。在本文中,我们报道了制备的多样化取代的和官能化的[1,3]二氧杂环戊烯并[4,5- c ^ ]喹啉使用[1,3]二氧杂环戊烯并[4,5-c]喹啉-4-甲醛(DQC)作为常见的中间体。DQC以邻氨基苯甲酸和氯丙酮为起始原料进行大规模合成,其中乙酰基邻氨基苯甲酸酯的重排是关键步骤。所开发的方法可以轻松制备[1,3] dioxolo [4,5- c在喹啉支架上具有各种C2取代基的喹啉。此外,合成路线已成功地用于制备3-羟基喹啉-4(1 H)-酮。对目标化合物进行了针对代表性革兰氏阳性/阴性细菌的测试,并且两种衍生物均表现出对微球菌微球菌的最小微摩尔抑制浓度。