The aim of the work was synthesis a new 28-acetylbetulin derivative containing an ester group with carbon–carbon triple bond in C3 position. To obtain title compound, reaction but-2-ynoic acid carried out according to Steglich method. synthetized compound fully characterized by analyzing nuclear magnetic resonance spectra (1H-NMR, 13C-NMR), as well heteronuclear single quantum coherence (HSQC),...

Protic ionic liquids have been regarded as promising materials to capture CO2, because they can be easily synthesized with an attractive capacity. In this work, we studied the CO2 absorption mechanism by protic (ILs) composed of diamino cations and azolide anions. Results 1H nuclear magnetic resonance (NMR), 13C NMR, 2-D NMR fourier-transform infrared (FTIR) spectroscopy tests indicated that re...

rhabdomyosarcoma is a common primary childhood malignancy that rarely metastasizes to the breast. we report a patient with a primary sinonasal rhabdomyosarcoma metastasizing to the breast, with no distant spread. we describe the imaging appearance of rhabdomyosarcoma on magnetic resonance imaging (mri), particularly on diffusion-weighted imaging (dwi) and apparent diffusion coefficient (adc) se...

Synthetic cannabinoid receptor agonists (SCRAs) are a continually evolving family of illicit drugs, with novel analogues frequently being detected. This paper reports the detection new N-hexyl-1H-indazole derivative, ADB-HINACA, within herbal sample seized by law enforcement for first time in United Kingdom. The identity compound was confirmed via synthesis pure ADB-HINACA reference standard an...

We herein report on the synthesis of a pentacyclic triterpene functionalized through derivation betulinic acid with hydroxybenzotriazole. The compound was fully characterized by proton (1H-NMR), carbon-13 (13C-NMR), heteronuclear single quantum coherence (HSQC) and distortionless enhancement polarization transfer (DEPT-135 DEPT-90) nuclear magnetic resonance. Ultraviolet (UV), Fourier-transform...

The complete resonance assignment of the ColE1 rop (rom) protein at pH 2.3 was obtained by two-dimensional (2D) proton nuclear magnetic resonance spectroscopy (1H NMR) at 500 and 600 MHz using through-bond and through-space connectivities. Sequential assignments and elements of regular secondary structure were deduced by analysis of nuclear Overhauser enhancement spectroscopy (NOESY) experiment...