曾报道苍耳内酯倍半萜内酯为苍耳属植物的主要成分,已从中分离出2种二聚苍耳内酯——辛辣内酯(pungiolide)A、B;1种新的碳骨架结构的五环苍耳内酯——辛辣苍耳内酯(xanthipungiolide);1种硫化合物——苍耳噻吩吡喃(xanthienopyrane);一 It has been reported that sesquiterpene lactones are the major components of the Xanthium genus, from which 2 kinds of di-lactone have been isolated—pungiolides A and B; a new carbon skeleton has been isolated. The structural pentacyclic xantholactone - xanthipungiolide; a sulfur compound - xanthienopyrane;