Ipomoeassins A-E, cytotoxic macrocyclic glycoresins from the leaves of Ipomoea squamosa from the Suriname rainforest.

@article{Cao2005IpomoeassinsAC,
  title={Ipomoeassins A-E, cytotoxic macrocyclic glycoresins from the leaves of Ipomoea squamosa from the Suriname rainforest.},
  author={Shugeng Cao and Rebecca Clare Guza and Jan H Wisse and J. George Miller and Randy Evans and David G I Kingston},
  journal={Journal of natural products},
  year={2005},
  volume={68 4},
  pages={487-92}
}
The new glycoresins, ipomoeassins A-E (1-5), have been isolated from the leaves of Ipomoea squamosa. The structures were elucidated by spectroscopic analyses and chemical transformations. The absolute configurations of C-5 (ipomoeassins 3-5) and C-11 (ipomoeassins 1 and 2) were determined by their derivatives with (R)- and (S)-MPA. All the isolates were… CONTINUE READING