A rare glutamine derivative from the flower buds of daylily.

@article{Matsumoto2014ARG,
  title={A rare glutamine derivative from the flower buds of daylily.},
  author={Takahiro Matsumoto and Seikou Nakamura and Tomoe Ohta and Katsuyoshi Fujimoto and Masayuki Yoshikawa and Keiko Ogawa and Hisashi Matsuda},
  journal={Organic letters},
  year={2014},
  volume={16 11},
  pages={
          3076-8
        }
}
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 γ-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-Kα X-ray crystallographic analysis. This is the first report… 
22 Citations
A Rare Glutamine Derivative from the Flower Buds of Daylily.
A rare glutamine derivative named hemerocallisamine I (I) is isolated from the methanolic extract of the flower buds of daylily, together with a new pyrrole alkaloid hemerocallisamine II (II) and a
γ-Lactam alkaloids from the flower buds of daylily
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Four new alkaloids, hemerocallisamines IV–VII, were isolated from the methanol extract of flower buds of daylily and significantly inhibited the aggregation of Aβ42 in vitro.
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Four new constituents of cassiaglycoside were isolated from the seeds of Cassia auriculata and the chemical structures were characterized on the basis of chemical and physicochemical evidence.
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