Three new trinor-cycloartane glycosides, 15alpha-hydroxy-16-dehydroxy-16(24)-en-foetidinol-3-O-beta-D-xylopyranoside (1), 28-hydroxy-foetidinol-3-O-beta-D-xylopyranoside (2) and foetidinol-3-O-beta-D-xylopyranosyl-(1"-->3')-beta-D-xylopyranoside (3) together with the known compound foetidinol-3-O-beta-D-xylopyranoside (4) were isolated from the n-BuOH fraction of the roots of Cimicifuga foetida...

Three new triterpenoid alkaloids, namely buxmicrophyllines P-R (1-3), were isolated from the twigs and leaves of Buxus microphylla. Their structures were elucidated on the basis of NMR and MS spectroscopic analyses. Structurally, compounds 1-3 belong to the 9,10-cycloartane type alkaloids. In addition, compound 3 exhibited moderate cytotoxic activities in vitro against HL-60, SMMC-7221, A-549, ...