抗菌剂
小单孢菌
立体化学
生物
生药学
微生物学
计算生物学
化学
细菌
生物活性
生物化学
遗传学
体外
链霉菌
作者
Chun Gui,Shanwen Zhang,Xiangcheng Zhu,Wenjuan Ding,Hongbo Huang,Yu‐Cheng Gu,Yanwen Duan,Jianhua Ju
标识
DOI:10.1021/acs.jnatprod.7b00176
摘要
Two new spirotetronate aglycones, 22-dehydroxymethyl-kijanolide (1) and 8-hydroxy-22-dehydroxymethyl-kijanolide (2), along with seven new spirotetronate glycosides, microsporanates A–F (3–8) and tetrocarcin P (9), together with three known tetrocarcins [tetrocarcins A (10), B (11), and AC6H (12)], were isolated from fermentation broths of the marine-derived Micromonospora harpali SCSIO GJ089. The structures of 1–9 were elucidated on the basis of 1D and 2D NMR and MS spectroscopic data. Compounds 3–8 feature an α,β-unsaturated carbonyl moiety within their spirotetronate skeletons. Moreover, compounds 3–12 displayed strong to moderate antibacterial activities against Gram positive bacteria Bacillus thuringiensis BT01 and B. subtilis BS01 with MIC values ranging from 0.016 to 8.0 μg/mL.
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