A new cycloartane glycoside (1) was obtained from a minor triterpene fracti
on of the rhizome extract of Actaea racemosa (synonym: Cimicifuga racemosa)
along with a known compound, cimigenol 3-O-beta -D-xylopyranoside. The str
ucture of 1 was elucidated as 20(S),22(R),23(R),24(S)-12 beta -acetoxy-16 b
eta :23,23 alpha :24-diepoxy-3 beta ,22 beta ,25-trihydroxy-9,19-cyclolanos
t-7-ene 3-O-beta -D-xylopyranoside (actaeaepoxide 3-O-beta -D-xylopyranosid
e) on the basis of spectral and chemical evidence.