二新C-21steroidalglycosides，mucronatosidesM(1)和N(2)，从白前科植物mucronata的茎被孤立，和一已知的复合stephanosideM(3)。根据化学证据和广泛的分光镜的方法，包括一个维、二维的NMR，二新混合物的结构作为12-O-tigloyl-20-O-N-methylanthraniloylsarcostin3-O--D-glucopyranosyl-(14)被识别-6-deoxy-3-O-methyl--D-allopyranosyl-(14)-(-D-cymaropyranosyl-(14)--D-cymaropyranoside(1)，和12-O-cinnamoyl-20-O-nicotinoyl(20S)-pregn-6-ene-3(,5(,8,12,14(,17,20-heptanol3-O--D-glucopyranosyl-(14)-6-deoxy-3-O-methyl--D-allopyranosyl-(14)--D-cymaropy
