Abstract
將燈籠草全草乾燥粉碎後，以甲醇萃取，萃取液經填充活性炭管柱，矽膠色層管柱等各種色層分析方法分離，再經紅外光譜，一維及二維核磁共振光譜及質譜等各種光譜方法鑑定，得到三種新的固醇內酯成分，分別命名為苦蘵素丙 (20R,22R)-15a-acetoxy-6b,14b-dihy droxy-16b,17b-epoxy-5a-methoxy-1-oxo-witha-2,24- dienolide，苦蘵素丁 (20R,22R)-15a-acetoxy-5b,6b, 16b,17b-diepoxy-14b-dihydroxy-4-methoxy-1-oxo-wi tha-24-enolide，苦蘵素戊 (20S,22R)-15a-acetoxy-6 b,14a-dihydroxy-5a-methoxy-1-oxo-witha-2,16,24-t rienolide．