Structure elucidation of arteannuin O, a novel cadinane diol from Artemisia annua, and the synthesis of arteannuins K, L, M and O
摘要:
The novel cadinane diol, arteannuin O (1), has been obtained from Artemisia annua and its structure has been established by 2D NMR and X-ray crystallography. A reconstructive synthesis of arteannuin O from artemisinin is described, which also yields the natural products arteannuin K and arteannuin L. Mechanistic considerations have led to the conclusion that the stereochemistry of the 5-hydroxyl group was wrongly assigned when arteannuins K, L and M were first reported as natural products. This was confirmed by derivatization of synthetic arteannuins K, L and M as their Mosher esters. (C) 2001 Elsevier Science Ltd. All rights reserved.
DOI:
10.1016/s0040-4020(01)00633-0
作为产物:
描述:
dihydro-epi-arteanniun B 在
盐酸 作用下,
以
乙醚 为溶剂,
以79%的产率得到arteannuins K
参考文献:
名称:
Structure elucidation of arteannuin O, a novel cadinane diol from Artemisia annua, and the synthesis of arteannuins K, L, M and O
摘要:
The novel cadinane diol, arteannuin O (1), has been obtained from Artemisia annua and its structure has been established by 2D NMR and X-ray crystallography. A reconstructive synthesis of arteannuin O from artemisinin is described, which also yields the natural products arteannuin K and arteannuin L. Mechanistic considerations have led to the conclusion that the stereochemistry of the 5-hydroxyl group was wrongly assigned when arteannuins K, L and M were first reported as natural products. This was confirmed by derivatization of synthetic arteannuins K, L and M as their Mosher esters. (C) 2001 Elsevier Science Ltd. All rights reserved.