Pyrano[3,2-c]quinolone structural motifs are commonly found in natural products with diverse biologicalactivities. As part of a research programme aimed at developing the efficient synthesis of natural product-like small molecules, we designed and developed the microwave assisted, facile stereoselective synthesis of two series of carbohydrate fused pyrano[3,2-c]quinolonederivatives (n = 23) starting
吡喃并[3,2- c ]喹诺酮的结构基序通常存在于具有多种生物活性的天然产物中。作为旨在开发类似于天然产物的小分子的有效合成研究计划的一部分,我们设计并开发了微波辅助的两种系列碳水化合物融合的吡喃并[3,2- c ]喹诺酮衍生物(n = 23)从2- C-甲酰基半乳糖和2- C-甲酰基葡糖开始,在较短的反应时间(15-20分钟)内与各种4-羟基喹诺酮类反应。这些合成的吡喃并[3,2- c确定了针对MCF-7(乳腺癌)和HepG2(肝)癌细胞的喹诺酮类药物。选定的文库成员显示出低摩尔浓度(3.53–9.68μM)和选择性的抗增殖活性。这些关于碳水化合物稠合的吡喃并[3,2- c ]喹诺酮衍生物的发现有望为抗癌药物的发现提供新的线索。
Efficient chemoselective alkylation of quinoline 2,4-diol derivatives in water
作者:Nafees Ahmed、Keyur G. Brahmbhatt、Inder P. Singh、Kamlesh K. Bhutani
DOI:10.1002/jhet.364
日期:2011.1
Synthesis of various C‐3‐dialkyl derivatives of quinoline 2,4‐diol was achieved by condensation of aniline or substituted anilines with diethyl malonate, followed by chemoselectivealkylation at C‐3 in water. The higher yields, easy work up and environmental compatible conditions are the main aspects of our method. J. Heterocyclic Chem., 2011.
The present invention relates to macrocyclic compounds of formula (I) that are useful as inhibitors of the hepatitis C virus (HCV) NS3 protease, their synthesis, and their use for treating or preventing HCV infections.
Diastereoselective Synthesis of Carbohydrate Conjugates: Pyrano[3,2-c]quinolones
作者:Brajendra K. Singh、Sumit Kumar、Aditi Arora、Sandeep Kumar、Priti Kumari、Sunil K. Singh
DOI:10.1055/s-0042-1751505
日期:2024.4
protocol for the diastereoselective synthesis of pyrano[3,2-c]quinolone carbohydratederivativesfrom Perlin aldehydes and 4-hydroxyquinolones has been developed using a one-pot condensation at room temperature. In this investigation, glucose and galactose were employed as inexpensive starting materials to synthesize two sets of pyrano[3,2-c]quinolone-based carbohydrate conjugates. A total of sixteen novel
利用室温下的一锅缩合,开发了一种简便有效的方案,用于从 Perlin 醛和 4-羟基喹诺酮中非对映选择性合成吡喃并[3,2- c ]喹诺酮碳水化合物衍生物。在这项研究中,葡萄糖和半乳糖被用作廉价的起始材料来合成两组基于吡喃并[3,2- c ]喹诺酮的碳水化合物缀合物。使用该方法成功合成了总共 16 种新型化合物,收率良好至极好。该反应表现出显着的非对映选择性,产生葡萄糖非对映体过量 ( dr ) 97:3的单一非对映体产物,而半乳糖获得非对映体过量 ( dr ) 67:33 的非对映体混合物。所有 16 种化合物的结构表征均使用各种分析技术进行,包括 IR、1 H NMR、13 C NMR、1 H- 1 H COSY、1 H- 13 C HETCOR 实验、2D NOESY NMR 和 HRMS 数据。此外,通过以克级合成其中一种化合物,成功证明了该方案的可扩展性,凸显了其大规模生产的潜力。
Natural product inspired diastereoselective synthesis of sugar-derived pyrano[3,2-c]quinolones and their in-silico studies
作者:Aditi Arora、Sumit Kumar、Sandeep Kumar、Sunil K. Singh、Amita Dua、Brajendra K. Singh
DOI:10.1016/j.carres.2024.109105
日期:2024.5
diastereoselective and efficient route to construct sugar-derived pyrano[3,2-]quinolones utilizing 1--formyl glycal and 4-hydroxy quinolone annulation. This methodology will open a route to synthesize nature inspired pyrano[3,2-]quinolones. This is the first report for the stereoselectivesynthesis of sugar-derived pyrano[3,2-]quinolones, where 100% stereoselectivity was observed. A total of sixteen