摘要:
摘要 从桤木雄花中分离得到了6种新型的仲丹马烷型三萜酸。根据它们的物理化学和光谱数据,它们被表征为甲基 (24 E )-3,4-secodammara-4(28),20,24-trien-26-oic acid-3-oate, (24 E ) -3,4-secodammara-4(28),20,24-trien-3,26-dioic acid, (20 S,24 S)-20,24-dihydroxy-3,4-secodammara-4(28), 25-dien-3-oic acid, (23 E )-(20 S )-20,25-dihydroxy-3,4-secodammara-4(28),23-dien-3-oic acid, (23 E )- (20 S )-20,25,26-trihydroxy-3,4-secodarnmara-4(28),23-dien-3-oic-酸和 (23 E