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Pseudolarolides O and P, Two Novel Triterpene Dilactones from Pseudolarix kaempferi
Pseudolarolides O (1) and P (2), two novel triterpenoids with a cycloartane-type framework, were isolated from the seeds of Pseudolarix kaempferi Gord. (Pinaceae). Their structures were elucidated asExpand
Two Novel Lycopodium Alkaloids from Huperzia serrata
Huperzine Q (1) and N-oxyhuperzine Q (2), two novel irregular fawcettimine-type Lycopodium alkaloids were isolated from the CHCl3 fraction of the basic material of the whole plant of the ChineseExpand
Three new Phlegmariurine B type lycopodium alkaloids from Huperzia serrata
Three new analogous compounds were isolated from the CHCl 3 fraction of total alkaloids of whole plant of the Chinese medicinal herb Huperzia serrata and their structures were elucidated by spectral analysis. Expand
Huperzine R, a novel 15-carbon Lycopodium alkaloid from Huperzia serrata.
Huperzine R (2), a novel 15-carbon Lycopodium alkaloid, was isolated from the whole plant of Huperzia serrata, and the relative configuration was established using spectroscopic and X-rayExpand
Huperzines S, T, and U: New Lycopodium alkaloids from Huperzia serrata
Three new Lycopodium alkaloids, huperzines S (1), T (2), and U (3), along with eight known compounds, were isolated from the total alkaloids of the whole plant of Huperzia serrata (Thunb) Trev.Expand
Low-timing-jitter, stretched-pulse passively mode-locked fiber laser with tunable repetition rate and high operation stability
We design a low-timing-jitter, repetition-rate-tunable, stretched-pulse passively mode-locked fiber laser by using a nonlinear amplifying loop mirror (NALM), a semiconductor saturable absorber mirrorExpand
Correlation of atomic packing with the boson peak in amorphous alloys
Boson peaks (BP) have been observed from phonon specific heats in 10 studied amorphous alloys. Two Einstein-type vibration modes were proposed in this work and all data can be fitted well. ByExpand