Effect of wrist-ankle acupuncture on propofol dosage during painless colonoscopy: A randomized controlled prospective study.

Background: The clinical advantages of painless colonoscopy can reduce the fear and discomfort of patients and increase the detection rate of diseases. Propofol has the characteristics of fast effect and short action time. It is a common choice for painless endoscopic sedation and anesthetics.

Three new polyketides from sp. ZJ-M-5 by the OSMAC strategy.

Three new compounds, ascotrichols A-B () and ascotrichrone A (), along with two known isocoumarin derivatives (), were isolated from the solid culture of a sea mud-derived fungus, sp. ZJ-M-5 on rice media. The structures were elucidated by extensive spectroscopic analyses, including 1D and 2D NMR data, and the absolute configurations were determined by electronic circular dichroism and biogenetic correlation.

Polyketides from Pestalotiopsis zonata and structure revision of pestalrones A and B.

The structures of pestalrones A-B were revised via reinterpretation of the NMR data and a brief chemical transformation from the co-occurring polyketides, in our investigation on the secondary metabolites of Pestalotiopsis zonata, which also afforded a new α-pyrone derivative, pestazonatic acid, and four known analogs.