Three new hasubanan-type alkaloids from the Stephania longa
Natural product research(2022)
摘要
Three new hasubanan-type alkaloids, stephalonine Q (1), stephalonine R (2) and stephalonine S (3), together with four known alkaloids, isolonganone (4), eletefine (5), aurantiamide (6), N-cinnamoyltyramine (7), were isolated from the whole plant of . Their structures were identified by NMR, HR-ESI-MS, CD methods and x-ray crystallography, as well as by comparison with the literature data. All isolated compounds were evaluated for their antimicrobial activities against five bacteria . Compound 5 displayed inhibitory activity against only , with an MIC value of 50 μg/mL.
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关键词
Antimicrobial activity,chemical constituents,hasubanan-type alkaloid,Stephania longa
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