【摘 要】
:
Two new dihydroflavonoids were obtained from the traditional Chinese medicinal herb Patrinia villosa Juss. Their structures were elucidated as (2S)-5, 7, 2′, 6
【机 构】
:
Shanghai Key Laboratory for Pharmaceutical Metabolite Research
论文部分内容阅读
Two new dihydroflavonoids were obtained from the traditional Chinese medicinal herb Patrinia villosa Juss. Their structures were elucidated as (2S)-5, 7, 2′, 6′-tetrahydroxy-6, 8-di (γ,γ-dimethylallyl) flavanone (1) and (2S)-5, 7, 2′, 6′-tetrahydroxy-6-lavandulylated flavanone (2) by spectroscopic methods including UV, IR, HR-TOF-MS, 1D NMR and 2D NMR techniques.
其他文献
The effect of sulfate ion (SO42-) loading on the properties of Pt/SO42- -ZrO2 and on the catalytic isomerization of n-butane to iso-butane was studied. The cata
We analyze the correlation properties of the Erdos-Rényi random graph (RG) and the Barabási-Albert scale-free network (SF) under the attack and repair strateg
AIM: To observe the effects of acid and bile acid exposure on cell proliferation and the expression of extracellular signal-regulated protein kinase (ERK) and p
A single-mode laser with coupling between additive and multiplicative noise terms is investigated when the multiplicative noise and the coupling between two noi
Intramolecular cyclization of β -methyl substituted epoxide under aprotics (e.g. LDA in benzene) and protic conditions (e.g. LiOH in MeOH/H2O)both gave a mixtu
A series of noble metal catalysts (Ru, Rh, Ir, Pt, and Pd) supported on alumina-stabilized magnesia (Spinel) were used to produce syngas by methane reforming wi
In this article, the author studies the mechanism of formation of necrotic cores in the growth of tumors by using rigorous analysis of a mathematical model. The
Direct decomposition of methane was carried out using a fixed-bed reactor at 700 ℃ for the production of COx-free hydrogen and carbon nanofibers. The catalytic
From the κ symmetric action of ⅡB string in AdS2 × S2 background given by Zhou, we derive the equations of motion. By using the twisted dual transformation w
In this paper, we find the invariant eigen-operators (IEOs) and the energy-level gap of a system with a two-level atom interacting with single mode cavity field