Spirostane derivatives highly oxygenated at A and B rings from the rhizomes of roth and of baker

@inproceedings{Miyahara1980SpirostaneDH,
  title={Spirostane derivatives highly oxygenated at A and B rings from the rhizomes of roth and of baker},
  author={Kazumoto Miyahara and Fumio Kumamoto and Toshio Kawasaki},
  year={1980}
}
Abstract Two steroidal compounds BR-1 (I) and −2 (II) which had been obtained from the rhizomes of Campylandra aurantiaca Baker, were isolated also from those of Rohdea japonica Roth. They were identified, respectively, by X-ray analysis and chemical correlation as 1β,2β,3β,4β,5β,7α-hydroxy-spirost-25(27)-en-6-one and its corresponding 6β-hydroxy compound.