Anti-inflammatory oxazole-, nitro- and hexahydropyrrolo[2,1-b]oxazole-containing abietane diterpenoid alkaloids from Salvia miltiorrhiza.

Nine undescibed abietane diterpenoid alkaloids (DAs), salviamines G‒H (1-2), isosalviamines G‒J (3-6), and miltiorramines A‒C (7-9) were isolated from the roots of Salvia miltiorrhiza. Their chemical structures including absolute configurations were elucidated by extensive spectroscopic analysis (including 1D and 2D NMR, and HRESIMS), combined with the calculated ECD method and single-crystal X-ray diffraction analysis. Among them, compounds 1-6 are unusual 20-nor- or 19,20-bisnor-abietane DAs with an oxazole ring.

Application of digital positioning guide plates for the surgical extraction of multiple impacted supernumerary teeth: A case report and review of literature.

Background: An extra tooth in the normal tooth sequence in any region of the dental arch is regarded as a supernumerary tooth (SNT). Due to the large variation in location and morphology, the extraction of impacted SNTs is an extensive and complex procedure with high risks of several complications. This report presents a rare case of seven impacted SNTs in the bilateral upper and lower arch that were successfully extracted with the use of digital positioning guide plates.

Effects of exogenous Ca on stomatal traits, photosynthesis, and biomass of maize seedings under salt stress.

Understanding the responses of stomatal structure, photosynthesis and biomass of maize to exogenous Ca addition under NaCl stress has important significance for further uncovering the alleviative mechanism of exogenous Ca on maize under salt stress. We examined the effects of exogenous Ca(0, 5, 10, 20, 40, 80 mmol·L) on the stomatal structure, photosynthesis and biomass of maize (Zea mays L. cv.