Stemocurtisine, the first pyrido[1,2-a]azapine Stemona alkaloid.

@article{Mungkornasawakul2003StemocurtisineTF,
  title={Stemocurtisine, the first pyrido[1,2-a]azapine Stemona alkaloid.},
  author={Pitchaya Mungkornasawakul and Stephen G. Pyne and Araya Jatisatienr and Damrat Supyen and Wilford Lie and Alison Thavary Ung and Brian W. Skelton and Allan H. White},
  journal={Journal of natural products},
  year={2003},
  volume={66 7},
  pages={
          980-2
        }
}
A new pentacyclic stemona alkaloid, stemocurtisine (2), with a novel pyrido[1,2-a]azapine A,B-ring system, has been isolated from a root extract of Stemona curtisii. The structure and relative stereochemistry was determined by spectral data interpretation and X-ray crystallography. 

Figures and Tables from this paper

The pyrido[1,2-a]azepine Stemona alkaloids
This paper reviews the isolation, structure elucidation, proposed biosynthesis and biological activities of the small, but increasing, number of pyrido[1,2-a]azepine Stemona alkaloids.
Two New N-Oxide Alkaloids from Stemona cochinchinensis
TLDR
Stemokerrin showed potent anti-tussive activity on citric acid-induced guinea pig model and the 1H- and 13C-NMR characteristic of N-oxide Stemona alkaloids was summarized.
The chemistry of Stemona alkaloids: An update.
TLDR
This review discusses the isolation, structural elucidation, structural classification, biological activities, semi-synthesis and total syntheses of Stemona alkaloids from 1999 to August 2009.
Stemona Alkaloids: Biosynthesis, Classification, and Biogenetic Relationships
TLDR
The biosynthesis, structural classification, and the intrinsic, biogenetic relationships of Stemona alkaloids are summarized in this review.
Strategies for the Synthesis of Stemona Alkaloids
The extracts of several plants of the Stemonaceae family have long been used in Asian countries against differentdiseases and for their antiparasitic properties. Significant constituents of these
Cytotoxic and larvicidal activities of Stemona alkaloids from the aerial parts and roots of Stemona curtisii Hook.f.
TLDR
A new Stemona alkaloid glycoside derivative, 6-hydroxy-5,6-seco-stemocurtisinoside (4), was isolated from the ethanolic extract of the aerial parts of Stemonia curtisii Hook and evaluated for their cytotoxicities and their larvicidal activities against the dengue vector, Aedes aegypti.
The stemona alkaloids.
Oxidative biotransformation of stemofoline alkaloids
TLDR
Three new stemofoline derivatives were produced by C-hydroxylation and N-oxidation reactions, together with the known compound 1′,2′-didehydrostemofoline-N-oxide, which was not biotransformed under these conditions.
...
...

References

SHOWING 1-2 OF 2 REFERENCES
(CH) 3.07 (quin, 6.5) H-10, H-10a, Me (18) 12 147.2 (C) H-10, H-11