3 years ago

SYNTHESIS AND ANTIMYCOBACTERIAL EVALUATION OF NEW (2-OXO-2H-CHROMEN-3-YL) SUBSTITUTED FLUOROQUINOLONES

SYNTHESIS AND ANTIMYCOBACTERIAL EVALUATION OF NEW (2-OXO-2H-CHROMEN-3-YL) SUBSTITUTED FLUOROQUINOLONES
An efficient method for incorporation of the cyanomethyl fragment into the benzene ring of bi- and tricyclic fluoroquinolones through the nucleophilic substitution of a fluorine atom with carbanions derived from CH-active cyanoacetates, followed by an acidic hydrolysis of the reaction intermediates was developed. The reaction of cyanomethyl derivatives of bi- and tricyclic fluoroquinolones with ortho-hydroxy substituted benzaldehydes proved to give the corresponding condensation products, which can be regarded as the key intermediates in the synthesis of previously unknown (2-oxo-2H-chromen-3-yl) substituted bi- and tricyclic fluoroquinolones. It has been shown that an increase in the reaction temperature and exposition time promotes the competitive process, leading to substitution of one more fluorine atom to give 1,4-dihydro[1]-benzoxepino[2,3-g]quinolones. New fluoroquinolones proved to exhibit anti-mycobacterial activity, thus indicating that a search of biologically active compounds in this family of heterocycles appears to be a reasonable approach.

Publisher URL: www.sciencedirect.com/science

DOI: S0022113917304025

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.