Atroposelective N-N Axes Synthesis via Electrochemical Cobalt Catalysis.

Here, we disclosed an unprecedented cobalt electrocatalyzed atroposelective C-H activation and annulation for the efficient construction of diversely functionalized N-N axes in an undivided cell. A broad range of allene substrates and benzamides bearing different functionalities are compatible with generating axially chiral products with good yields and excellent enantioselectivities (up to 92% yield and 99% ee). A series of synthetic applications and control experiments were also performed, which further expanded the practicality of this strategy.

Metabolomics and transcriptomics provide insights into the flavonoid biosynthesis pathway in the roots of developing Aster tataricus.

Aster tataricus (L.) is an important medicinal plant in China. Its roots are rich in flavonoids, the main medicinal components.

Polysaccharides from Polyporus umbellatus: A review on their extraction, modification, structure, and bioactivities.

Polyporus umbellatus (Pers.) Fries, a well-known medicinal fungus, has been reported to exhibit important functions of diuresis and dampness infiltration in traditional Chinese Medicine. Accumulating evidences have demonstrated that the P.

[Influence of different processing methods and mature stages on 3,29-dibenzoyl rarounitriol of Trichosanthes kirilowii seeds].

Objective: To study the different mature stages and the best processing methods on the quality of Trichosanthes kirilowii seeds.

Methods: The content of 3,29-dibenzoyl rarounitriol in Trichosanthes kirilowii seeds was determined by HPLC. The sample of different mature stages such as immature, near mature and fully mature and processed by different methods were studied.

[Study on secondary metabolic organ of echinacoside in herbs of Cistanche tubulosa].

Objective: It could give some theory support of confirming the secondary metabolism organ and regulation of echinacoside in Cistanche tubulosa by searching parasitic growth of C. tubulosa ahd echinacoside variation in different organs of host and parasite.

Method: The echinacoside content was analyzed by HPLC.

[Inoculation experiments of Cistanche tubulosa on 8 introduced Tamarix species].

Objective: To analyze the inoculation ratio and echinacoside content of Cistanche tubulosa and provide theoretical basis for Tamarix introduction, resource protection and screening of C. tubulosa.

Method: 8 Tamarix species were introduced in the North China Plain and inoculation of C.

[Studied of dry matter accumulation and echinacoside content of Cistanche tubulosa in Huabei plain].

Objective: To give some theory support of Cistanche tubulosa cultivation by searching dry matter accumulation and echinacoside content of C. tubulosa.

Method: Dry matter accumulation content of C.

[Morphology of seed germination and parasitism in Cistanche tubulosa].

Objective: To understand the process of Cistanche tubulosa.

Method: The process of seed germination and parasitism was observed using stereomicroscope.

Result: Seedling of C.

[Effects of cultivation technique on yield and favonoid content of Chrysanthemum flower (Qiju) grown in Hebei].

Objective: To study the effect of cultivation techniques on the flower yield flavonoid content in Chrysanthemum flower grown in Hebei.

Method: Studied on flowers yield and three factors (transplanting date and plant density and fertilizer quantity) were examined in field experiment at 4 treatments levels.

Result And Conclusion: The best results were obtained at following conditions: diammonium phosphate 300 kg x hm(-2) and potassium sulfate 150 kg x hm(-2) fertilized before transplanting, transplanting at the first ten days of May and the spacing 40 cm x 40 cm.

[Study on inoculation technology of Cistanche tubulosa in the field].

Objective: To increase inoculation rate of Cistanche tubulosa in the field by studying inoculation technologies.

Method: Root-tube inoculation methed was used on field experiments. Inoculation rate of C.