Novel triazole derivatives of the formula (I), in which R
1
-R
6
and Y have the meanings indicated in claim
1
, are HSP90 inhibitors and can be used for the preparation of a medicament for the treatment of diseases in which the inhibition, regulation and/or modulation of HSP90 plays a role.
A catalytic and tert-butoxide ion-mediated amidation of aldehydes with para-nitro azides
作者:Giorgio Carbone、James Burnley、John E. Moses
DOI:10.1039/c3cc40452h
日期:——
We report here a new catalytic reaction in which, para-nitro azides are acylated by aldehydes to produce amides and molecular nitrogen in a single step. The transformation is believed to proceed via an electron transfer process mediated by the tert-butoxide ion, and catalysed by a thiazolium salt derived species.
revealed that the introduction of the hydroxy groups shifts the reactivity from both amide and amine groups toward this moiety and additionally enhances antioxidative features. This is particularly evident in 26H•+, which owes its pronounced reactivity to the stabilizing [O•···H–O] hydrogen bonding between the created phenoxyl radical and the two neighboring hydroxy groups. We demonstrated that its