Five New Steroidal Alkaloid Glycosides from<i>Solanum tuberosum</i>
作者:Zhi-Qiang Zhang、Jian-Guang Luo、Jun-Song Wang、Ling-Yi Kong
DOI:10.1002/hlca.201200269
日期:2013.5
Five new steroidal alkaloid glycosides, 1–5, along with the known analog 6, have been isolated from the aerial parts of Solanum tuberosum. The structures of the new compounds were elucidated by spectroscopic methods, including 1D‐ and 2D‐NMR and HR‐ESI‐MS techniques, as well as by comparison of the spectral data with those of related compounds. Only compound 6 showed significant cytotoxicity.
Three new steroidal alkaloids were isolated from the bulbs of Fritillaria delavayi FRANCH.The structures of delafrinone (1), delafrine (2) and the third alkaloid were deduced to be (22R, 25S)-3β, 16β-dihydroxy-5α-cevanin-6-one, (22S, 25R)-5α-cevanine-3β, 6β, 16β-triol and (22R, 25S)-solanid-5-enine-3β, 5α, 6β-triol (3), respectively, on the basis of spectral data and chemical evidence.