Total synthesis of -pavettamine.

Pavettamine, a plant toxin first isolated from in 1995, was previously identified as a polyamine with symmetry and a 1,3--diol moiety on a C carbon backbone - one of very few substituted polyamines to be isolated from nature. Its absolute configuration was later established by our first reported total synthesis in 2010. Herein we report the first total synthesis of the enantiomer of pavettamine, -pavettamine.

Elucidating the effect of precursor decomposition time on the structural and optical properties of copper(i) nitride nanocubes.

To study the effect of time on the colloidal synthesis of CuN nanoparticles, copper(ii) nitrate was thermally decomposed at 260 °C for up to 60 min in octadecylamine as a stabilizing ligand. Thermolysis of the nitrate followed four steps which included; nucleation, growth, ripening and decomposition. At 5 min, partially developed nanocubes were found in a dense population of CuN nuclei.