Abstract
Five new compounds, rigenolides D–H (1–5), were isolated from the aerial parts of Gentiana rigescens Franch. Their structures were assigned by detailed spectroscopic analyses and chemical conversions. Rigenolides D (1) and E (2) were elucidated to be a secoiridoid and a norsecoiridoid, respectively, possessing a dienone moiety in common. Rigenolides F–H (3–5) were assigned as acylated secoiridoid glucosides.
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This work was partly supported by JSPS KAKENHI Grant numbers JP18406028 and JP17K08337.
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Suyama, Y., Tanaka, N., Kawazoe, K. et al. Rigenolides D–H, norsecoiridoid and secoiridoids from Gentiana rigescens Franch. J Nat Med 72, 576–581 (2018). https://doi.org/10.1007/s11418-018-1181-2
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DOI: https://doi.org/10.1007/s11418-018-1181-2