Two oligosaccharides from Marsdenia roylei.

@article{Kumar1999TwoOF,
  title={Two oligosaccharides from Marsdenia roylei.},
  author={Awanish Kumar and Anakshi Khare and Naveen Kumar Khare},
  journal={Phytochemistry},
  year={1999},
  volume={50 8},
  pages={
          1353-7
        }
}
Phytochemical analysis of dried twigs of Marsdenia roylei (family Asclepiadaceae) has resulted in the isolation of a trisaccharide, maryal, and a diglycoside, rolinose. Their structures were determined as O-beta-D-oleandropyranosyl-(1-->4)-O-beta-D-digitoxopyranosyl++ +-(1-->4)-D- cymaral and ethyl O-beta-D-oleandropyranosyl-(1-->4)-O-3-O-methyl-6-deoxy-beta-D- allopyranoside, respectively, by chemical degradation and spectroscopic methods. 
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