Abstract
Twenty-three new C21 steroidal glycosides, marstenacissides C1–C10 (1–10), D1–D7 (11–17) and E1–E6 (18–23), and four new C21 steroids, 11α,12β-O-ditigloyl-tenacigenin C (24), 11α-O-benzoyl-12β-O-tigloyl-tenacigenin C (25), 11α-O-tigloyl-12β-O-benzoyl-tenacigenin C (26) and 11α-O-tigloyl-12β-O-benzoyl-marsdenin (27), were isolated from the Dai herbal medicine Dai-Bai-Jie, derived from the roots of Marsdenia tenacissima. The chemical structures of all compounds were established by spectroscopic techniques, including high-resolution mass spectrometry and NMR spectroscopy, as well as by comparison with reported spectral data. The anti-HIV activities of these compounds were screened, and the compounds obtained displayed inhibitory effects against HIV-1 with inhibition rates of 36.4–81.3% at 30 μM.
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Thanks to Miss Meifeng Xu in National Center of Biomedical Analysis (NCBA) for the measurements of the NMR spectra.
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Pang, X., Kang, LP., Fang, XM. et al. C21 steroid derivatives from the Dai herbal medicine Dai-Bai-Jie, the dried roots of Marsdenia tenacissima, and their screening for anti-HIV activity. J Nat Med 72, 166–180 (2018). https://doi.org/10.1007/s11418-017-1126-1
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DOI: https://doi.org/10.1007/s11418-017-1126-1