普古乌耳草中一种新的菲蒽酚内酯和c -苄基二氢查尔酮

Natural Product Letters Pub Date : 2002-01-01 DOI:10.1080/10575630290020604

J. Makangara, S. Jonker, M. Nkunya

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引用次数: 11

摘要

从新发现的尤瓦属植物U. puguensis D.M. Johnson的茎皮中分离出了两种新的天然产物:类菲瓜烯内酯(6-羟基-3-甲氧基-4-草吡喃-5- 1)和异血脂素，以及先前在尤瓦属植物中发现的倍半萜愈创木酚和常见的c -苄基二氢查尔酮。乌瓦拉素，二乌瓦拉素，夏姆瓦拉素以及三瓦拉素和异三瓦拉素的混合物。结构解析是通过光谱方法的组合来实现的。

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A Novel Phenanthrenolide and C-Benzyl Dihydrochalcones from Uvaria Puguensis

Two new natural products, the phenanthrenoid puguenolide (6-hydroxy-3-methoxy-4-oxapyren-5-one) and isoangoletin were isolated from the stem bark of the newly described Uvaria species, U. puguensis D.M. Johnson, together with the sesquiterpene guaiol and the usual C-benzyldihydrochalcones previously found in the genus Uvaria , viz . uvaretin, diuvaretin, chamuvaritin and a mixture of triuvaretin and isotriuvaretin. Structural elucidation was achieved through a combination of spectroscopic methods.

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Natural Product Letters

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