Termisoflavones A-C, Isoflavonoid Glycosides from Termite-Associated Streptomyces sp RB1
- Authors
- Kang, Hee Rae; Lee, Dahae; Benndorf, Rene; Jung, Won Hee; Beemelmanns, Christine; Kang, Ki Sung; Kim, Ki Hyun
- Issue Date
- Dec-2016
- Publisher
- AMER CHEMICAL SOC
- Citation
- JOURNAL OF NATURAL PRODUCTS, v.79, no.12, pp.3072 - 3078
- Journal Title
- JOURNAL OF NATURAL PRODUCTS
- Volume
- 79
- Number
- 12
- Start Page
- 3072
- End Page
- 3078
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/7638
- DOI
- 10.1021/acs.jnatprod.6b00738
- ISSN
- 0163-3864
- Abstract
- Three new isoflavonoid glycosides, termisoflavones A-C (1-3), and eight isoflavonoids (4-11) were isolated from termite-associated Streptomyces sp. RB1 recovered from the cuticle of the South African termite, Macrotermes natalensis. The structures of new compounds were determined by spectroscopic methods including ID and 2D NMR and HR-MS analysis, as well as comparison of their NMR data with those of related isoflavonoid glycoside derivatives. The absolute configurations of the sugar moieties were clarified by chemical reactions. None of the isolates (1-11) displayed antifungal or antimicrobial activities (MICs > 100 mu g/mL), whereas compounds 6 and 11 ameliorated cisplatin-induced kidney cell damage to 80% of the control value at a cisplatin dose of 25 mu M.
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