Absolute structures of stemona-lactam S and tuberostemospiroline, alkaloids from stemona tuberosa.

@article{Fukaya2013AbsoluteSO,
  title={Absolute structures of stemona-lactam S and tuberostemospiroline, alkaloids from stemona tuberosa.},
  author={Haruhiko Fukaya and Yukio Hitotsuyanagi and Yutaka Aoyagi and Zhu Shu and Katsuko Komatsu and Koichi Takeya},
  journal={Chemical \& pharmaceutical bulletin},
  year={2013},
  volume={61 10},
  pages={
          1085-9
        }
}
A new alkaloid, stemona-lactam S, and a known alkaloid, tuberostemospiroline, were isolated from the roots of Stemona tuberosa LOUR. (Stemonaceae). Their structures and absolute stereochemistry were established by X-ray crystallography and vibrational circular dichroism. 
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