科研之友
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摘要
A rare glutamine derivative, hemerocallisamine I (1), was isolated from the methanolic extract of the flower buds of daylily, together with a new pyrrole alkaloid hemerocallisamine II (2) and a new gamma-lactam derivative, hemerocallisamine III (3). The chemical structures of the new compounds were elucidated on the basis of chemical and physicochemical evidence. For hemerocallisamine I (1), the absolute configuration was determined by Mo-K alpha X-ray crystallographic analysis. This is the first report of a glutamine derivative with a pyrrole ring from natural plants.
- 出版日期2014-6-6
