The structure is contained in the following publication(s):
Article ID: 10396
Oshima Y, Hirota T, Hikino H "Validity of Oriental medicines. Part 125. Immunomodulating drugs. Part 1. Periplocosides A, B and C, steroidal glycosides of Periploca sepium root bark" -
Heterocycles26 (1987) 2093-2098