Preparation and use of N-iodopropargyl oxycarbonyl amino acid esters and
申请人:Rohm and Haas Company
公开号:US05209930A1
公开(公告)日:1993-05-11
Antimicrobial compounds of the formula ##STR1## wherein R.sup.1 is selected from the group consisting of H, lower (C.sub.1 -C.sub.4)alkyl, alkyl aryl, CH.sub.2 OR, CH.sub.2 SR, and CH(CH.sub.3)OR; and R, R.sup.2, and R.sup.3 are independently selected from H, (C.sub.1 -C.sub.4)alkyl, aryl, arylalkyl, alkaryl, and halopropargyl.
This invention relates to compounds which are generally IP receptor antagonists and which are represented by Formula I:
1
wherein:
R
1
, R
2
, and R
3
are each independently in each occurrence aryl or heteroaryl;
R
4
is —COOH or tetrazolyl;
A, B, m, n, and r are as defined in the specification;
or individual isomers, racemic or non-racemic mixtures of isomers, or pharmaceutically acceptable salts or solvates thereof. The invention further relates to pharmaceutical compositions containing such compounds, methods for their use as therapeutic agents, and processes for their preparation.
One-Pot Synthesis of Ureas from Boc-Protected Amines
作者:Constantinos Spyropoulos、Christoforos G. Kokotos
DOI:10.1021/jo500492x
日期:2014.5.16
one-pot synthesis of ureas is described. Boc-protected amines can be transformed into nonsymmetrical and symmetricaldisubstituted and trisubstituted ureas utilizing 2-chloropyridine and trifluoromethanesulfonyl anhydride for the in situ generation of an isocyanate, which reacts with an amine. A variety of amines can be employed successfully, leading to high yields of isolated ureas.
This paper reports the synthesis and AMPA, Gly/NMDA, and KA receptor binding affinities of a new set of 1,9-disubstituted-8-chloro-pyrazolo[1,5-c]quinazoline-2-carboxylates 2-34. Binding data show that, in general, compounds 2-34 bind to the AMPA receptor with good affinity and selectivity. In particular, the obtained results indicate that the contemporary presence of a 1,2-dicarboxylic acid moiety