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In this work, a total of 19 novel naphthalene hybrids with chimonanthine scaffolds were efficiently synthesised from indole-3-acetonitrile in good yields. The prepared compounds were evaluated for biological activity against Cryptococcus neoformans, Escherichia coli, Shigella spp, Candida albicans, Salmonella spp, and Staphylococcus aureus. The preliminary bioassays showed that most of the synthesised compounds exhibited significant antibacterial or antifungal activity. Notably, compound 8 showed potent activity against Cryptococcus neofonmans, Escherichia coli, Shigella spp, and Candida albicans than the positive control, all with the same MIC value of 3.53 µM. Compound 8 had a broad spectrum of antibacterial or antifungal activity, and will be studied further. [ABSTRACT FROM AUTHOR]

A total of 20 new indole analogs were synthesized and evaluated for biological activity against Sclerotinia sclerotiorum, Altenaria solani, Verticillium dahliae, Fusarium oxysporum, Pythium walnuts, and Curvularia zea. The preliminary biological testing showed that most of the synthesized compounds exhibited fungicidal activities. Notably, compounds 2 and 7 showed the broadest and most effective activities among the compounds tested and could be potential new lead compounds for the future development of antifungal agents. [ABSTRACT FROM AUTHOR]