Tetranortriterpenoids from Cipadessa baccifera.

  title={Tetranortriterpenoids from Cipadessa baccifera.},
  author={Li-She Gan and Xiao-Ning Wang and Yan Wu and Jian‐Min Yue},
  journal={Journal of natural products},
  volume={70 8},
Five new mexicanolide-type tetranortriterpenoids, tigloylseneganolide A (1), 2'R-methylbutanoylproceranolide (2), 2'S-methylbutanoylproceranolide (3), 2'R-cipadesin A (4), and 2'R-cipadesin (6), as well as the known 2'S-epimers of 4 and 6 (5 and 7), together with six other known limonoids, were isolated from the seeds of Cipadessa baccifera. The structures of these compounds were elucidated on the basis of spectroscopic analyses and chemical methods. 1H NMR-based conformational analysis was… Expand
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