摘要:
摘要 马齿苋根中苯提取物的中性成分被鉴定为 elasclepiol、erythroxyol A 和四种新的拜耳烷二萜醛 ent-14β-tigloyloxybeyer-15-en-19-al (elasclepial) 及其 14β-angeloyloxy-is,和 ent-3β-hydroxy-14β-tigloyloxybeyer-15-en-19-al (3β-hydroxyelasclepial) 及其醋酸盐。这些轴向醛被大气氧氧化成相应的羧酸并脱羰得到氢过氧化物。从苯提取物的酸组分中分离出四种新的四环二萜酸,鉴定为 ent-14β-angeloyloxybeyer-15-en-19-oic acid、ent-beyer-15-en-19-oic acid、ent-atis -16-en-19-oic 酸和 ent-18-angeloyloxykaur-16-en-19-oic 酸。