Preparation of triazolo[1,5-c]pyrimidines as potential antiasthma agents
作者:Jeffrey B. Medwid、Rolf Paul、Jannie S. Baker、John A. Brockman、Mila T. Du、William A. Hallett、J. William Hanifin、Robert A. Hardy、M. Ernestine Tarrant
DOI:10.1021/jm00166a023
日期:1990.4
Cyclization, using cyanogen bromide, gave the triazolo[1,5-c]pyrimidines, after a Dimroth rearrangement. Following a structure-activity evaluation, the 5-[3-(trifluoromethyl)phenyl]-2-amino (8-10), 5-(3-bromophenyl)-2-amino (8-13), 5-[3-(difluoromethoxy)-phenyl]-2-amino (8-11), and 5-(4-pyridinyl)-2-amino (6-7) compounds were found to have the best activity. They were chosen for further pharmacological
Systematically changing the ancillary chelate from L3 to L6, together with addition of a 3,4-ethylenedioxythiophene (EDOT) appendage, boosts the overall efficiencies of a fabricated DSC device.