Design, synthesis and antimicrobial activity evaluation of novel Marinoquinoline derivatives against phytopathogenic bacteria.

Background: Plant diseases caused by plant pathogens pose a great threat to biodiversity and food security, and the problem of drug resistance caused by traditional antibiotics and fungicides is becoming more and more serious. It is urgent to develop new antibacterial molecules with low toxicity and high efficiency. Marinoquinoline A is an alkaloid isolated from marine actinomycetes and has a variety of pharmacological activities.

Antifungal Effects and Postharvest Diseases Control Potential of , -2, 4-Nonadienal against .

Pathogenic microorganisms are a significant cause of food spoilage, adversely affecting both product quality and human health. This study evaluated the antifungal activities of 34 aldehydes against foodborne and plant pathogenic fungi, identifying 8 promising lead compounds. Among them, , -2, 4-nonadienal exhibited optimal effects against with an EC of 11.

Design, Synthesis, and Biological Evaluation of Novel Quinoline Derivatives against Phytopathogenic Bacteria Inspired from Natural Quinine Alkaloids.

A series of 2-(trifluoromethyl)-4-hydroxyquinoline derivatives were designed and synthesized with introduction of the antibacterial fragment amino alcohols, and their antibacterial activity against plant phytopathogenic bacteria was evaluated for the development of quinoline bactericides. It is worth noting that compound exhibited excellent antibacterial activity with a minimum inhibitory concentration (MIC) value of 3.12 μg/mL against ().

Design, Synthesis, and Antimicrobial Activity Evaluation of Novel Isocryptolepine Derivatives against Phytopathogenic Fungi and Bacteria.

This research adopted the Fischer indole synthesis method to continue constructing a novel drug-like chemical entity based on the guidance of isocryptolepine and obtained four series of derivatives: , , , and . The antimicrobial activity of these derivatives against plant pathogens was further evaluated. The results showed that had the best antifungal effect against , and its EC value was up to μg/mL.

Antifungal Activity of Phloroglucinol Derivatives against and .

Naturally derived compounds show promise as treatments for microbial infections. Polyphenols, abundantly found in various plants, fruits, and vegetables, are noted for their physiological benefits including antimicrobial effects. This study introduced a new set of acylated phloroglucinol derivatives, synthesized and tested for their antifungal activity in vitro against seven different pathogenic fungi.

Design, synthesis and antimicrobial activity of novel berberine derivatives.

Background: The threats to the safety of humans and the environment and the resistance of agricultural chemicals to plant pathogenic fungi and bacteria highlight an urgent need to find safe and efficient alternatives to chemical fungicides and bactericides. In this study, a series of Berberine (BBR) derivatives were designed, synthesized and evaluated for in vitro and in vivo antimicrobial activity against plant pathogenic fungi and bacteria.

Results: Bioassay results indicated that compounds A11, A14, A20, A21, A22, A25, A26, E1, E2, E3, Z1 and Z2 showed high inhibitory activity against Sclerotinia sclerotiorum and Botrytis cinerea.