Preparation and application of a kind of indole derivative
A technology of indole derivatives and extracts, applied in the field of microbial herbicides, can solve problems such as endangering human health, endangering the safety of agricultural products, environmental pollution and weed resistance, etc., and achieves low product cost, good herbicidal activity, and short cycle Effect
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Embodiment 1
[0022] Example 1: Indole-like derivatives of chlamydosporin are shown in formula (1) (the Arabic numerals in the structure are the positions of carbon atoms),
[0023] .
Embodiment 2
[0024] Example 2: Fermentative production and separation and purification of chlamydosporin-like indole derivatives:
[0025] 1) Fermentation culture
[0026] Strain culture: According to the conventional culture method of microorganisms, pick a small amount of strains preserved in the agar-malt extract medium Fusarium chlamydosporum QJP1 was inoculated on the surface of a PDA plate, cultured at 28°C for 3 days, and was used as a strain for large-scale fermentation culture.
[0027] Cut off the appropriate amount of bacteria on the surface of the PDA plate, inoculate it into a sterilized Erlenmeyer flask filled with rice culture medium, and let it stand at room temperature for 30 days. Add ethyl acetate to sterilize and set aside.
[0028] The rice medium is 100 g / bottle of rice, 0.6 g / bottle of peptone, and 100 mL / bottle of artificial seawater.
[0029] 2) Separation and purification of compounds
[0030] The above-mentioned rice culture medium was ultrasonically extrac...
Embodiment 3
[0033] Embodiment 3: Herbicidal activity test
[0034] The agar mixed powder method established by Luo Xiaoyong et al. [Journal of Qingdao Agricultural University, 2007; 24(4): 267-270] is used for rapid determination of the herbicidal activity of compounds, which has high sensitivity, simple operation, short determination time and good repeatability , It can be widely screened with large throughput, and it is easy to observe the growth status of indicating plants. Luo Xiaoyong et al. used this method to quickly measure the herbicidal activity of 40 kinds of garden plant leaves. Zhang Lijuan [Plant Protection, 2016; 42:63-66.] and Su Fansheng [Applied Chemistry, 2014; 31:290-295.] used barnyardgrass as the test weed, and used the agar mixed powder method to quickly determine the corn stalk and herbicidal activity of imidazoles. Zhang Yun [Acta Microbiology, 2015; 55(3): 292-298.] and Li Shuai [Journal of Agricultural and Food Chemistry, 2014; 62(14): 8997-9001.] took Amarant...
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